SOHC-T Coupe Build

[veilside180sx]

Well I finally gave in and decided to post these pics here, they've been posted on a couple of other forums for awhile now, but you'll get the compiled version.

My build list:

SOHC motor:
T3/T61 Turbo
JGS Manifold
JGS Wastegate
JGS BOV
JGS Custom Sheet metal Intake Manifold
Emissions removed
Espelir JGT500 Exhaust

Built Spare Block(awaiting cash flow)
Arias Pistons or Wiseco
Crower Rods
Clevite Bearings
PDM Cam or JWT (undecided)
SCE Headgasket
ARP Headstuds
Hybridka.com Solid Lifter Conversion


Fuel and Ignition Control:
AEM EMS 30-1600
GM 3 Bar Map Sensor
720cc Injectors
MSD 6a Ignition
MSD Blaster 3 Coil
Innovate LC-1 Wideband

Drivetrain:
Heavy Duty Pressure Plate
Custom Kevlar Clutch
VLSD
C's Short Shifter

Suspension:
D2 Coilovers 7/5 w/ Pillowball mounts
SPL Tension Rods
SPL Traction Rods
SPL Toe Rods
SPL Rear Upper Control Arms
Tein Inner/Outer Tie Rods
Whiteline Adjustable Sway Bars
Boxed/Welded LCA
ES Bushing Set to cover parts that the rest doesn't cover
ES Subframe Bushings
Custom Nismo Power Bar type tension rod bracket
New Front Lower Control Arms w/ ES Poly Bushing

Interior:
Momo Monte Carlo Wheel
Sentra B13 or B15 seats(have both, haven't decided which to use)

Footwork:
5Zigen FN01R-C 17x8 35 offset w/ 215/45 F 235/45 R

Pics of the car in progress:

Car itself is a '92 Coupe, that will sport a pignose at it's current state. Car has been thoroughly cleaned and repainted underneath. The outside has not yet been, because it's in good enough condition that it isn't a priority as of yet.


http://northwestnissans.com/photopost/data/500/3509coupe_passenger_side-med.jpg


http://northwestnissans.com/photopost/data/500/3509coupe_driver_side-med.jpg


http://northwestnissans.com/photopost/data/500/3509drivers_wheel_well-med.jpg

Suspension Parts:

http://northwestnissans.com/photopost/data/500/3509splarms-med.jpg


http://northwestnissans.com/photopost/data/500/3509betterarmsspindle-med.jpg


http://northwestnissans.com/photopost/data/500/3509subframeside-med.jpg


http://northwestnissans.com/photopost/data/500/3509subframetop-med.jpg


http://northwestnissans.com/photopost/data/500/3509subframeside2-med.jpg


http://northwestnissans.com/photopost/data/500/3509fsusp-med.jpg


http://northwestnissans.com/photopost/data/500/3509passengerfront-med.jpg



Diff Cover


http://northwestnissans.com/photopost/data/500/3509diff_cover-med.jpg

[veilside180sx]

And it continues....

Motor Pics:

http://northwestnissans.com/photopost/data/500/3509turbomani-med.jpg


http://northwestnissans.com/photopost/data/500/3509jgswastegate-med.jpg


http://northwestnissans.com/photopost/data/500/3509intake2-med.jpg


http://northwestnissans.com/photopost/data/500/3509intake1-med.jpg


http://northwestnissans.com/photopost/data/500/3509motorfront-med.jpg


http://northwestnissans.com/photopost/data/500/3509turbo_intake-med.jpg


http://northwestnissans.com/photopost/data/500/3509venturi-med.jpg


http://northwestnissans.com/photopost/data/500/3509topview1-med.jpg


http://northwestnissans.com/photopost/data/500/3509topview2-med.jpg


http://northwestnissans.com/photopost/data/500/3509disclearance-med.jpg


http://northwestnissans.com/photopost/data/500/3509overview-med.jpg

[s13andy]

wow looking really nice. awesome suspension set up. engine is looking awesome.

[ALTRNTV]

SICK.

We do have a Picture Thread.

[aznpoopy]

nice pics. that looked like it was an awful lot of work.

^^ true we have the pic thread. i wonder if this falls under the normal classification of car pics though. this is something different and far more interesting then the typical 'car at an angle in a empty parking deck with harsh lighting' pics.

[veilside180sx]

I was reading through the post locations and couldn't decide where it fit, but didn't want it to get buried amongst 8 million random pics. So move it if one must, but I'd like to be able to continue to add to it. Without other persons pictures involved if at all possible.=)

[MakotoS13]

i like it.

good job.

[TheTimanator]

^^ true we have the pic thread. i wonder if this falls under the normal classification of car pics though. this is something different and far more interesting then the typical 'car at an angle in a empty parking deck with harsh lighting' pics.
seriously, I mean...if I post a pic of something broken on my car are you gonna tell me to post it in the picture thread?

If he had posted it in the Picture Thread, no one could ask questions except through PM...then the he's be getting a ton of PM's all asking the same thing.

Anyway, what kind of power of are expecting out of this thing?

[exitspeed]

Nice stuff! All that effort and then such weak size wheels????

[veilside180sx]

Anyway, what kind of power of are expecting out of this thing?

On the stock block we'll hold the reigns back to between 300-350 rwhp.

When the built block goes in we're looking for somewhere in the 500-low 600 rwhp range.=)

[veilside180sx]

I expected complaints about the wheels, they were purchased a year ago previous to the 17x9 +20 being released. They work fine though. I would like run small spacers to squeeze 245's on them though.

[JaeTea]

Nice!

So this setup will be running on a stock block?

[veilside180sx]

For now..yes. I have my spare on a stand 1/2 stripped, waiting to go to the machinest. I just can't afford the parts for it right now, since I'm been undertaking the rest of this lately.

[veilside180sx]

Some pics of the mounted intercooler

http://northwestnissans.com/photopost/data/500/3509intercoolermounted-med.jpg

http://northwestnissans.com/photopost/data/500/3509intercoolermtd-med.jpg[/QUOTE]

[SochBAT]

sweet setup. In the armed forces? Your boots n fatigues give it away.

Happy boosting, and post up the dyno when you get it done!

[Flybert]

This project must be taking you a long ass time. I say that because you have the old version of the SPL RUCA's. How long has that thing been on jackstands? I got the blue RUCA's too. Bought them on here almost 2 years ago when SPL had a GB to promote their stuff. Done 15+ drift events on them as well as the SPL tension rods and they've held up nicely. I like your subframe.

Since your subframe is off, you should trade your subframe spacers for the type that doesn't have a slit in the spacer.

[DrIvEsldEwAyS]

very nice man.

[smellslikecurry]

wow you must have a lot of time and patience...the project is coming along great and i cant wait to see the finished product...keep up the amazing work

[infinitexsound]

dope, one hell of a project to do all at once... MAD PROPZZ.......are u going to powdercoat the valve cover?

[Nan Desu Ka?!]

wow, super clean setup! thats gonna be one fast ass coupe.

nice snail... that thing is HUGE. :P keep us posted mang!

[veilside180sx]

This project must be taking you a long ass time. I say that because you have the old version of the SPL RUCA's. How long has that thing been on jackstands? I got the blue RUCA's too. Bought them on here almost 2 years ago when SPL had a GB to promote their stuff. Done 15+ drift events on them as well as the SPL tension rods and they've held up nicely. I like your subframe.

Since your subframe is off, you should trade your subframe spacers for the type that doesn't have a slit in the spacer.

You are only the second person to catch the "old" RUCA's. The other was Alan that worked there.=) Actually I had them on another car that was recently hit. So those were just swapped from the other one. Well I had subframe spacers, then switched to these ES bushings, but today I found out one of my nephews lost one while playing with it. So I guess I'm going to purchase SPL aluminum ones. Sucks though, I've had to rebuy numerous parts for this thing, with all the changes that have happened. I've been through two turbo manifolds, 3 turbos, etc.=) I've owned this one for 3 months, but I've been gathering turbo parts for 18. Either way..it's too long to not be having fun with it.

FYI I'm not in the military. Old paintball clothing.

[SochBAT]

Damn, you coulda jsut been cool and said something like "yea, i pwn all those commies with my M4. They regret eating my rations."

[veilside180sx]

Could've, but don't like to front something I'm not.=)

[veilside180sx]

All the rear suspension is installed finally=). As well as the wheels. It's ready to be dropped on the ground with the exception of us breaking 2 jacks in the process. Should be running in the next 2 weeks if all goes well.

Have pics but accidently burned the wrong ones on the cd that I burned. So I'll post those later this weekend.

[CKAMC]

dude your car is HOT! love the fact that you *and one of the few out there* kept their single cams and went turbo with it. everyone keeps bashing a single but compared to a DE Sr it kicks major ass stil! hell you can get the single to breath just as good as a dual depending on how you set it up.

I found out thru a lot of the old Z tunnerz that if you were to look around hard there are stores about people who have made massive power on their ka24e's back in the day.

[reefer1114]

thats fucking bad ass!!! but why not spend the extra money for a decent lsd? seems like youre going all out on everything else¿

[veilside180sx]

Eventually I'll wind up with a Nismo 1.5 way clutch LSD. For now though I have to work with what I can afford. Cash is running out and I recently took a hefty pay cut switching jobs. So I'm having to buy parts that I probably wouldn't otherwise buy for some things.=(

[chlatboy]

Nice setup. But why did you decide to go SINGLE and not DUAL?

[420sx]

SINGLE IS dirt CHEAP if not free most of the time.

[chlatboy]

True, and he is doing a rebuilt so that takes care of the mileage problem.

[veilside180sx]

When it comes down to it...I already own 3 SOHC's. In studying both blocks the bottom ends are all identical. The head(SOHC) with a cam and port work will outflow a DOHC head(stock). So that shouldn't hinder me.

I figure Ventura Racing made 700 rwhp a couple of years ago on the SOHC, and the DOHC are just now starting to get up to those power levels. So it'll work for power levels I want.=)

[veilside180sx]

Passenger Side Shot

http://northwestnissans.com/photopost/data/500/5948passenger2-med.jpg

Drivers Side Shot

http://northwestnissans.com/photopost/data/500/5948newfront-med.jpg

Engine Bay Pic

http://northwestnissans.com/photopost/data/500/5948enginebay4-med.jpg

[i8yourfwd]

Very nice :D cept for the fram filter, might wanna get rid of that =X Not very healthy I hear.

[veilside180sx]

Yup that's out, it's just there to keep it sealed for now. It'll be replaced with a "Nissan" unit.

[veilside180sx]

Ordered a vacuum block to split for the brake booster, fpr, map sensor. Then I'm just going to use a T fitting up front for the throttle body and bov.

Also ordered a 90 degree coupler going between the turbo outlet and the intercooler piping, dang those things aren't cheap. The piping I had wasn't a tight enough radius to do w/o putting it up against the fender wall. Which I didn't like how it looked. So I'll actually install the piping Friday after that shows up.

When that's complete it's time to install and wire up the new sensors for the AEM. Map, IAT, Knock, and the gauges.(Boost/Oil Pressure for now)

Eventually I'll go through my harness and remove all the useless junk that I no longer need since I've removed so many sensors and stuff. Don't have the time or patience to tackle that right now though. I'll do that when I go through all the hassle of installing a roll cage.

Also when all this comes to fruition I'm going to setup a touchscreen to view/change my AEM's settings so I don't have to carry a laptop with me. It'll replace the current guage cluster similar to the MOTEC. Although it will be color and capable of playing DVD's, etc.

[veilside180sx]

FMIC Front Shot

http://northwestnissans.com/photopost/data/500/5948DSCF4708-med.JPG

Hot side piping

http://northwestnissans.com/photopost/data/500/5948DSCF4710-med.JPG

Cold Side piping

http://northwestnissans.com/photopost/data/500/5948DSCF4709-med.JPG

[NemeGuero]

you should consider rotating the compressor so you can have that hot pipe sit a little lower

otherwise, the setup looks badass.. I never thought to just drop the subframe and do all the suspension at once.. great idea (if you can afford the down time that is)

[veilside180sx]

you should consider rotating the compressor so you can have that hot pipe sit a little lower

Was already planning to do this, just didn't time before I had to run. Of course I had to snap pics first though. Since I hadn't updated it in awhile.

[ni5mo240]

you are not going to have power steering?

[veilside180sx]

I'll have power steering, just keep forgetting to throw the pump on there, thanks for the reminder though.=)

[ask52]

Whats wrong with the fram filter??

[NemeGuero]

It's fram.. the quality is terrible. there was a thread about their filters using cardboard or something..

[ask52]

I gess I should change mine then :bite:

[veilside180sx]

Just buy Nissan filters and you can't go wrong. The one on there is from when i was in a bind a long time ago.

[veilside180sx]

Some pics of what I installed today.

http://northwestnissans.com/photopost/data/500/5948b13ins13-med.jpg

http://northwestnissans.com/photopost/data/500/5948howlow-med.jpg

http://northwestnissans.com/photopost/data/500/5948seatheigth-med.jpg

I also bled the brakes today. Will be very nice to have good fluid and brakes.

[sticky240]

nice intake plenum, custom right? Looks really nice.

[veilside180sx]

It was a one off built by JGS Precision.

www.jgstools.com/turbo/index3.html

[SimpleSexy180]

i love your car <3 haha

[TUnity2]

SOHC, very nice man, cant wait to see a vid when she is finished.

[ledzeppelin240]

Looking good. I was wondering what you have done with the chassis. Seam weld, foam filled, roll cage possible. I am going to do as much as I can to stiffen the chassis because I also have a sunroof.

[veilside180sx]

Right now the rear is seam welded, but haven't gotten to the front yet.

It'll eventually receive a cage and the front will be seam welded as well.

[240silvia]

Did you have to buy bigger rotors for the Z brakes?

[veilside180sx]

No I haven't, still running stock rotors. I've seen both the VR4 and Supra rotor upgrades, but I'm still not convinced they really do much. They may dissipate heat a little better, but there obviously is no added pad to increase friction. So right now I'm just going to side with the fact that I don't want to increase unsprung weight unless I have to.

[KA24DESOneThree]

Newbies, pay attention to this man. He knows where it's at and what to do.

Not buying bigger rotors because they increase unsprung weight? It's astounding to find another person who gives a damn about unsprung weight in this world. It is, in the words of a great '80s icon, most excellent.

[ledzeppelin240]

I'm going to see exactly how good the stock brakes are. Use the best pads, best rotors, steel brake lines and see what the stock (aftermarket) system can do.

[veilside180sx]

I'm going to see exactly how good the stock brakes are. Use the best pads, best rotors, steel brake lines and see what the stock (aftermarket) system can do.

I understand your reasoning, but there is a point at which it'll border on a waste of time. The Z32 brake setup really is a huge step up from stock. I definately wouldn't go back to stock as they overheat quickly and chew through rotors quickly with race pads. It'll work short term but you'll be replacing rotors and pads so much more frequently that it will negate the advantages that it offers.

My .02

[axiomatik]

Having larger rotors does have advantages. While it does increase unsprung weight, and there is no additional friction material, the caliper is able to exert a greater torque on the wheel since it is located farther from the center of rotation, increasing braking force while allowing for more heat dissipation. However, our cars are so light that I don't think it is worth it.

[EchoOfSilence]

Having larger rotors does have advantages. While it does increase unsprung weight, and there is no additional friction material, the caliper is able to exert a greater torque on the wheel since it is located farther from the center of rotation, increasing braking force while allowing for more heat dissipation. However, our cars are so light that I don't think it is worth it.
we drive 240's, not Miatas. Comparably, 2800+ still isn't that light. Besides, ANY car can gain much from better braking capacity.

[veilside180sx]

The problem you run into is trying to adjust bias between the two. Going really large up front doesn't help if you don't make an upgrade that will offset it to the rears.

[axiomatik]

The Miata is an extreme example, not many cars are lighter. The 300zx brakes come off of a car that is what, 600lbs heavier than our cars? I have seen people use the bigger rotors off of 3000GT, and those cars are even bigger porkers, something like 1000lbs heavier than our cars. There is a point at which the marginal increase in braking power is negated by the increase in unsprung weight. 300zx brakes with good pads and good brake fluid are fine for 99% of us.

sykikchimp had a really good thread about upgrading brakes while maintaining stock brake balance. I think his conclusion was 300zx brakes up front with JDM 180sx brakes in the rear, or something like that.

[ledzeppelin240]

Yeah I started looking into it and having a fixed caliper with 4 pistons is awesome. More clamping force is always better... So I belive that I will use 300zx brakes up front with the 300zx master cylinder, good pads and good rotors on the rear. Do some testing and adjust as necessary.

[veilside180sx]

Yeah I started looking into it and having a fixed caliper with 4 pistons is awesome. More clamping force is always better... So I belive that I will use 300zx brakes up front with the 300zx master cylinder, good pads and good rotors on the rear. Do some testing and adjust as necessary.

That's the setup I have right now. I also want to try the Z two stage brake booster as well as see how that works.

[s13dan]

i love you man.. SOHC turbo and its looking mighty badass.

[ledzeppelin240]

I'll get some pics tomorrow of the valves I got. They have an undercut stem in the head area, reducing the valve weight, the radius of the head significantly improves air/fuel flow. Fully swirl polished with Stellite tips.

As well as the Manganese-Bronze valve guides.

[veilside180sx]

You just purchased the oversize swirl polished SI valves right?

[HyperTek]

all that cash and you settle on D2 coilovers??

[veilside180sx]

all that cash and you settle on D2 coilovers??

Well the D2's were the first of performance products purchased. I wasn't intending on taking the car remotely this far. One thing led to another, and now it's where it is.

When the D2's blow they will be replaced with one of the following. Ohlins Flag R, Tein Circuit Master(RS), or on the low end KTS/SPL.

It'll be taken off the street at the point and be a strictly track car with a touring car spec roll cage, also a much more aggressive wheel/tire package.

[shinrekka]

If you are going as far as to get oversized valves and the head ported, why limit yourself to PDM or JWT cams? I am personaly going with the Nismo R4 but im sure crane cams can make a cam with the lift and duration you would want with a turbo engine making that kind of power.

[veilside180sx]

If you are going as far as to get oversized valves and the head ported, why limit yourself to PDM or JWT cams? I am personaly going with the Nismo R4 but im sure crane cams can make a cam with the lift and duration you would want with a turbo engine making that kind of power.

The R4 is to aggressive/too much duration for turbo applications. I probably will have something custom made by Colt Cams(manufacturer of PDM cam's)

I have thought my stuff out considerably and have reasons behind every piece of the build.=)

[ledzeppelin240]

Yeah SI Valves is where I got them from. My camera sucks so just check out the web site if you wants pics. Either way I'm going to have to buy a new camshaft, so I think I will wait and see what veilside180sx comes up with from Colt Cams, unless I get the money before him.

[veilside180sx]

Mine will be custom ground to work with the solid lifter conversion. So as long as you intend to run that..you'll be set. I also won't have mine done for a year. Hope your not in a huge hurry.=)

[ledzeppelin240]

Yeah I plan on running the hybridka solid lifter conversion. I have 2 full sets of complete valvetrain that I am not going to be using, good thing I kept those for the core. I will most likely be wanting a camshaft within 6 months so I'll have to get one first.

[veilside180sx]

Good you can guniea pig it...I'm sick of it.=) j/k

In order for me to get the most out of it...I'd really want to be able to up the boost with a built block. As i would imagine it will take me 2-3 tries to really get what I want out of the cam. You also have to remember that my intake manifold will alter my power band a little as well due to the large plenum and short runners.

Maybe i should start with getting my car running, before I plan on changing things already.=)

I already have 2-3 revisions for later upgrades.=)

[MakotoS13]

do you have any fears concerning the lack of oil squirters that the dohc has?

[veilside180sx]

None whatsoever...because it will have them.=)

On a previous SOHC build that never wound getting turboed and was sold. We installed them on that block. It's not even all that difficult.

[MakotoS13]

i dont even know where the oil squirters are. my builder could do that for me?

[veilside180sx]

i dont even know where the oil squirters are. my builder could do that for me?

As long as he's a decent builder and familiar with Nissan's he can. SR's and KA's use the same squirters. So you can acquire them from either one. FYI.

[raen419]

this thread is pimp.
much like 2fass240us's thread on 240sxforums....which is probably one of the only good threads there.....

[MakotoS13]

he builds any kind of motor. he's doing a dohc right now that's way more built than mine. he does insane head work. where are these located?

[veilside180sx]

The are on a little shelf above the crank, at the bottom of each cylinder.

I'll try and find you some pics.

[MakotoS13]

that'd be very helpful. thanks.

[veilside180sx]

This is a pic of an USDM NA SR20DE, but the placement is identical on the KA's. You have to tap into the oil galleys. Your machinest should be able to figure it out from the pic.

http://www.se-r.net/about/200sx/scc/june98/june9.jpg

[veilside180sx]

Well I did the unbelievable today. I purchased a GP Sports G Sonic Replica kit today. I wouldn't of purchased a copy if I didn't know I would wind up trashing it or something. We'll see how well it fits when I get a chance to put it on...

Will take pics later as well.

[MakotoS13]

forged internals shouldn't have overheating problems so im not goin to bother with that. i'll keep the pic in case i change my mind, though.

[veilside180sx]

From what I undestand you don't intend to push yours like mine either. In your shoes I probably wouldn't worry about it either...it's overkill.

[aa87]

Well I did the unbelievable today. I purchased a GP Sports G Sonic Replica kit today. I wouldn't of purchased a copy if I didn't know I would wind up trashing it or something. We'll see how well it fits when I get a chance to put it on...

Will take pics later as well.


Who/Where/how much did you buy it for? Cant wait to see this car complete.

[veilside180sx]

I don't disclose prices that I paid for things. Although I purchased it at GroundZero Motorsports.

[ledzeppelin240]

Yeah I had plans for oil squirters off of the KA24DE engine but had never seen a pic of them, so thats cool.

[veilside180sx]

Side shot with the side skirt placed on, but not permanently mounted.

http://northwestnissans.com/photopost/data/500/3509sideskirts-med.jpg

[EchoOfSilence]

Wow, looking hot

[jbj858]

boosting a SOHC is like puting Firecrackers in your pants its stupid. waist of time and money

[ALTRNTV]

boosting a SOHC is like puting Firecrackers in your pants its stupid. waist of time and money

You sir are a DUMBASS. :down:

Also, it's spelled "waste," not "waist."

[SW20Racer]

just because you put firecrackers in your pants doesnt mean you have to light them tard. why is it a "waste"? because there is only 1 cam? if thats your belief then u should go jump off something really really high. head first. because the engine is old? thats why you rebuild an engine so thats arguments moot. So WHAT is the basis for your statment?

[240silvia]

I would like to hear everyone's opinions. Here's the question of the day....

Can the SOHC make the kind of numbers that a DOHC can???? 600+...

Let's hear it.....

[ALTRNTV]

How many DOHC KA's are in the 600+ range? Both KA's are good for boosting. Just because the SOHC has only one cam shouldn't make it an inferior engine to boost.

[240silvia]

I agree with you there. I don't think that the SOHC is inferior. I was wanting to build a SOHC actually. They're a few guys on KA-T.org that are 600+. I was just wanting to know.... that if I build a SOHC, will it be able to produce at least close to the numbers as a DOHC.

[jbj858]

sorry everyone..i was at my friends house when i logged on...and i stayed logged on..it was my friend who made those remarks not me..so once again..sorry for my immature friend

[SW20Racer]

you're right jb why didnt i see it before? i feel so foolish! i should sell my bodily fluids to afford the almighty sr! fuck you douche its not the engine its the driver and so what if we go with cheap engines that means more money for the things essential to track time. which is why i could own in a budget bucket n/a sw20 thats right. camry engine powaarr to the max bitch. and even with that camry engine, side by side on a track that actually had corners, i would bet on myself winning. why dont you go back to lurking, my head hurt much less when you did. i was going to stick with a high output n/a ka24e but just to spite you and whatever demon seed spring from your loins through incest im going to turbo my ka. it'll be the best ka ever! it will have so much power it will split the darkness like a sword made of pure justice and shiny blinkey lights and things! So, in conclusion, wrap ur head in plastic and call it a night.

[ALTRNTV]

And who said I didn't have a job, and what does that have to do with anything? What's a real motor to you? An SR20DET? You're a damn tool you know that. Let me ask you what motor you have in your 240 right now? I can bet it's a KA..

"Nice show car"

WTF? I have rims and coilovers you fucking dick. Hahaha. Go shoot yourself in the face, mouth open. :hyper:

[SW20Racer]

u never know it could be an sr check his join date he's old school tyte! :cj:

[zero.counter]

Don't worry about that guy, he's just a fanboy...

[SW20Racer]

not sweatin his existence. It's his vast treasure trove of ignorance that baffles me.

[ALTRNTV]

It's his vast treasure trove of ignorance that baffles me.

Bingo.

My friend's been running his SOHC KA-T for about 10 months now and is still holding strong at 10psi daily.

[240silvia]

Good replies, BUT, no one has answered my question....

Can the SOHC make the numbers a DOHC can?

I would rather build a SOHC, so I would like your opinions. Thanks.


-Charles

[SW20Racer]

hitting 600hp was done on a sohc years before those numbers were approached on a dohc

[zero.counter]

Good replies, BUT, no one has answered my question....

Can the SOHC make the numbers a DOHC can?

I would rather build a SOHC, so I would like your opinions. Thanks.


-Charles
KA-T.org....talk to Jordan.

[veilside180sx]

Jordan has never gotten over 350 rwhp. He doesn't want to play anymore because he doesn't want to foot the bill on "real" engine management.

I personally chose the SOHC instead of any other motor because of the torque curve. From what it feels it flows better down low which will spool a large turbo faster. After real headwork it should rev as high as I need it to as well, which is around 8000 rpm.

It's not like I didn't have access to lots of other motors...ie CA18,RB20/25,SR20,KADE...I just prefer the SOHC. As do the majority of the GT3 SCCA car builders. They've been doing this for years and still build the SOHC.

FYI Rick (site owner of ka-t.org) and I discuss these things every day. Since he's currently running the most consistant DOHC (633 rwhp) I think that speaks for itself. He also happens to have the quickest "no nitrous" 240, 10.9 in the 1/4.

Myself and SOHC_240SX on ka-t.org are both shooting for 550+ on our SOHC's. Since his head and mine will be somewhat similar I'll post his head flow results. They actually came out pretty nice.

http://home.att.net/~MabuhayCarlos/StockIntake.jpg
http://home.att.net/~MabuhayCarlos/PortIntake.jpg
http://home.att.net/~MabuhayCarlos/StockExhaust.jpg
http://home.att.net/~MabuhayCarlos/PortExhaust.jpg


If you guys want to have personal drama...don't do it in my thread! If you want to discuss the merits of the motor and actually want to discuss facts...bring it. If you want to want to bash your heads against the wall with opinions and uneducated opinions...take it else where.

[ledzeppelin240]

I have wanted to see some flow results of the ka24e engine for quite a while, what other neat information do you have? I plan on spending a one or two days Port and Polishing my cylinder head within the next two weeks.

I noticed back cut valves and P&P mentioned, is that just a basic P&P (intake/exhaust ports matched, combustion chamber/exhaust port blending & polishing, intake port blending)?

[veilside180sx]

Sounds right. He also is running the oversize Si valves, stiffer valve springs, custom Colt cam, and solid lifter conversion kit.

I have wanted to see some flow results of the ka24e engine for quite a while, what other neat information do you have? I plan on spending a one or two days Port and Polishing my cylinder head within the next two weeks.

I noticed back cut valves and P&P mentioned, is that just a basic P&P (intake/exhaust ports matched, combustion chamber/exhaust port blending & polishing, intake port blending)?

[MakotoS13]

my plans are:

-ported, polished, and matched head/intake mani's
-pdm racing turbo cam
-adjustable nismo cam sprocket

are our stock rods forged? i keep hearing that they are. my spare motor is about to go to my builder. wahoo for single slammers!

[veilside180sx]

Yes the stock rods are forged/shot peened but a little thin. I don't trust them past 300 rwhp though.

Just make sure you keep detonation in check though. I'm holding out for the Eagle rods to finish...they say they are working on them, but will not give a date when they will be available.

[ledzeppelin240]

Where did he get stiffer valve springs from? Only aftermarket springs for the ka24e I know about are from courtesyparts.com.

[veilside180sx]

Pioneer Inc Automotive Products
Intake Part Number:RV-1034-4
Exhaust Part Number: RV-611-4

[240silvia]

How much are they?

[veilside180sx]

Don't know, I haven't purchased any yet. Just call your local machinest and ask though..shouldn't be too hard for them to figure out.

[sideview_180sx]

well I noticed someone slightly bent a stock rod at 505whp went the car over boosted, it was in a dohc. I find the cast pistons to be the weak point. If anything get stock rods shot peened and forged pistons. Good deal.

[unwed_transient]

Just make sure you keep detonation in check though.

edit: read the specs list. :duh:

[veilside180sx]

That was the "Twins Heath and Keith"'s car that you speak of.

One isolated incident isn't conclusive enough to trust. I also know 3 that have sent 3 rods shooting out of the block at 400. So I don't trust them above 300-350. Besides it's cheap(relatively speaking) insurance that you have to junk the rest of the stuff outside your motor if it blows.

[MakotoS13]

yeah but were they shotpeened, cryo treated and all that jazz? i plan on using stock rods in my build but if i do they'll be new tweaked.

[ranger240]

sweet setup. In the armed forces? Your boots n fatigues give it away.

Happy boosting, and post up the dyno when you get it done!

fatigues, definately, the boots look like skate shoes though.

love how your keeping the SOHC and not hacking off your bumper, two things i plan to do

also, why do people think hacking off the bumper supports a good idea in the first place?

steel bumper or aluminum front mount; which would you rather have protecing you and your engine in a head on?

[ranger240]

sweet setup. In the armed forces? Your boots n fatigues give it away.

Happy boosting, and post up the dyno when you get it done!

fatigues, definately, the boots look like skate shoes though.

love how your keeping the SOHC and not hacking off your bumper, two things i plan to do

also, why do people think hacking off the bumper supports a good idea in the first place?

steel bumper or aluminum front-mount; which would you rather have protecing you and your engine in a head on?

[jdmlivin]

very nice mad props,keep on truckin.........

[rossfashow]

props bro! nice build. if i had been a member before purchasing the sr20det... i would have just rebuilt my blown sohc. i bet it would have been cheaper too... ive spent about $5k putting the sr20det together. and its still a stock sr. with some loose ends to be tightend up. how much did it cost you to rebuilt the sohc w/ boost added to it? i'm thinking i would have gotten a rebuilt boosted ka-t for about 5k or a lil over. with aftermarket internals. you think so?

[veilside180sx]

^you can if you work it right.

Time for the disappointment. The turbo parts were recently sold as was the chassis. Needed to eliminate some unnecessary debt that had previously been put off.

I kept the suspension for my race car though. (KA-DE NA)

This one is a hatchback, not quite as exotic but will be fun to drive.

Will never see street rubber...well unless it's RT615's.=)

[rossfashow]

if you dont mind me asking, what was the budget you put out on this sohc buildup and resoration of the 240sx?

[veilside180sx]

I was about $10,000-$12,000 into it. Can't remember off the top of my head.

It's the man hours that kills you, more hours than I can count went into cleaning the underside of that chassis.

[SoSideways]

It's the man hours that kills you, more hours than I can count went into cleaning the underside of that chassis.

Amen to that.

You probably lost like 10 pounds or more of grim from underneath your car haha

[SochBAT]

How about some pre-sale pictures of the car? I haven't seen this thread in a minute.

stupid work.