sr20det vs. ka24det

[Jay Wood]

I have had my 240 for a while and i feel that it is about time for me to start thinking about droping in a new engine. My goal is to go turbo. I was wondering what the best engine is for the job.  Is it better to go with the ka24de and get a bolt on turbo or just go for the sr20det? I have heard good things from fans of both engines but i just wanted to hear a few more opinions before i make my decision.  Thanks for your help. By the way, im new to this site...i have an 89 240(s13) and am 17 years old.  Thanks again.

i think, if u want a torque monster go with the ka, no replacement for displacement! if u want some super high-end and not want to worry about rebuilding the internals of the engine go for the sr, but my choice would be the KA i loev this engine :biggrin:

[nguyen]

I have a 95 240 with an sr20det, I agree that this motor doesn't have the kick a$$ torque but it has some serious top end power. In my oppion I will go with the sr20det again if I have another 240, cause I think the sr is more reliable. again this is only what I think.

check out www.havythrottle.com
It will give you alot of info on the sr and ka

[Grant]

hey nguyen where do you find normal parts for the SR20. like oil filters, air filters and stuff? do you ahve to order most of the parts from japan? and also does the SR20det have a timing belt or a timing chain like the KA?

[nguyen]

The ka oil filter is a bit bigger but it works fine, air filter normally people use higher flow cone type anyway so it universal. The sr use a timming chain and it the same as the us version sr20de in the sentra and the 200sx. the only thing that worry me is if the tranny breaks or the motor blow up, so if any one planning to do this swap try to stay with a 5speed cause the 6 speed is abit weaker than the 5 speed.

[dragon240sx]

I have been thinking about doing my turbo project next summer and I know I want to stay with the KA. I know most of you say it's a bit more work but that's why I'm planning a year ahead <img src="#/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'> What all do you have to rebuild in the engine when you put the turbo on? I have a 96 240sx with already 115,000 miles on it. I already know I'll be changing the pistons so I can run a higher boost...but what else do I need to take into consideration?

[Grant]

is the 5spd motor standard on teh s14 in japan? and would you say most of the parts would be like the SR20de's in the US (similar) ?

[Jay Wood]

So you guys say that the ka is good for torque but the sr is good for high end. I forgot to mention it but i plan to use the car for road racing at sears point raceway. I know that torque is good for going in a strait line but on a road course, would it be better to have more torque or better high end?

[drifterx]

jay: what is a tough question.... look at the US touring cup &nbsp;with the BMW and the Integra type R
BMW has better torque but Type R have better high end.... so i dont know what to tell u, they are about even...

[96SEChick]

From what I saw at auto-x today, I believe torque is more important. &nbsp;You don't usually go very fast on a road course (depending on how tight the course is, though), so you don't need a whole helluva lot of high end power. &nbsp;But, if it's a rather large road course with some straights in it, both would be better of course! &nbsp;If you're wanting to road race, my opinion would be more torque.

[drifterx]

what about momentum? high end with good handling can do that... dnt over torque cuz the car will lose control coming out of turns....
hmm... if u have a high torque car then u might wanna keep the rpm lower than high end cars coming out of turns

[Jay Wood]

Does the sr engine have a lot less torque to where it would make a huge difference or is it just a little difference? I mean the ka is a 2.4 truck engine, but the sr is a purpose built engine, right? Also, the best price that I have gotten for the sr swap installed including intercooler was 4200. Is this a good price or an i do better. And would a built ka with turbo cost alot more or about the same? &nbsp;

my GUESS is the torque on the sr stock is somewhere near 175-180 lb/ft of torque is this number far off? im not sure, but if the ka had a turbo on it running about 5 lbs of boost or whatever the sr is running i think the number on the ka would beat the numbers on the sr, anyone have any clues if im right?

[Boostaholic]

I would rather have the KA engine instead of the sr20 after riding in WeST's car. When he races me the little KA still has tons of top end along with the low end torque. Cams probably have alot to do with that however, since they drastically change the hp/torque curve from the stock KA engine, and make it more &quot;boost friendly&quot;. In the magazine with the 4 sylvias, the KA24det engines beat the sr20det engine hands down. But when a KADET engine can beat a viper, you know its hauling some balls. (And WeST's 240 will beat a viper as soon as he gets 1-2 of his mods he has ordered already on there.) The KA requires more engine work to be reliable at high psi, and the sr20 is probably more durable, but I the KA upgrade is easy, #### good, and alot less hassel than the completel conversion to the sr20det. Just my opinion though. <img src="#/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

[transient]

Actually.... isn't the KA engine more durable because part of it is a single casting while the SR has two covers or something? Can't remember which part, I just remember hearing that someplace.

[96SEChick]

I've heard that the KA is more durable because it's an iron block (even though it weighs more), whereas the SR is an aluminum block. &nbsp;Supposedly it can handle more boost.

[Jay Wood]

Chu's engine was basically stock and ryan yap's was heavily moded. Despite that fact though, chu only had 9.3 less horses and 17.4 less lb-ft of torque...what would happen if you decided to upgrade the sr? I guess my question is that if a basically stock sr can hang with a stage 2 f-max turbo ka, is it really worth the extra cost of the built up ka for just 17 lb-ft more torque? And doesn't the sr benifit more from mods then the ka?

[nguyen]

From what I have read from this topic, everyone favores the kadet more than the srdet. me, and Val on the 240sx.org members list live in the same city, we met up yesterday, he threw me his key for to test drive his car and he drove mine. I got to admit that the kadet will have more torque under 2500 rpm much better for getting off the line. now remember both of our motor run at 7psi. but the torqueky and lazy of the ka24de feeling is stiil there eventhough he had new cams in it. after about 15mins we both were in our own cars again for a race. my car was much faster than his, after 3rd gear I was about 20-30 feet ahead of him. So if any body thinks that torque is better for street racing than, okay....

val's home page <a href="www.angelfire.com/ab/turbo240sx" target='_blank'>www.angelfire.com/ab/turbo240sx</a>
my home page:

Im a high end HP freak, and could really care less about torque (except that desire to scare the #### out of people when they ride with me.) My car has ZERO torque until about 3500-4000 rpms when the turbo kicks you in the ass and you hold on to anything you can to avoid your head snapping off, and thats what I would assume the sr20 would be like with a proper setup/tuned car. The KA is more cost effective though if you dont have 5 grand to get the sr20 &amp; installed. I could put together a turbo kit from just buying misc peices and do it for alot cheaper than 3500$ for aftermarket turbo kits. I would guess it would be about 1700-1800 for the WHOLE kit. I like the SR because of the high end, but my only experience with the turbo KA is WeSTs car, and that has power through the whole rpm range from the mods that he has. But again, most cars probably wont have that, but my opinions are based only on those 2 factors. My car is a 2 liter too, and I can attest that they haul some balls.

[Jay Wood]

Boostaholic, if you would be willing to hook me up with one of &nbsp;those custom turbos for my car then that might be the way to go. I have an 89 240 though so i would still need to get the ka24de engine, build it up, and then get it installed all before i could buy turbo kit. Do you know how much the whole thing might cost me?

[justinc]

nguyen would u wanna take me for a spin in ur 240sx ?

[nguyen]

I don't see that being a problem, I am working at autotemp north right now if you wanna com by to hang out, that would be cool.

[justinc]

Do u get stuff for cost at autotemp?

[nguyen]

for myself yes for friend just discounts.

[justinc]

Im going to be buying a exhaust system in like 2 weeks do u have any good ones for a 240sx at auto temp?

[nguyen]

Im not sure you should give them a call justin

[cheater240]

Sorry to get a little technical, but we are talking about engines here. <img src="#/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'>

I don't know what the bore/stroke is for the sr, but the ka is 89/96 mm. &nbsp;This motor is a stroker and that is the basis for its large torque numbers. &nbsp;The fact that my '91 redlines at 6900 rpm is amazing to me. &nbsp;I mean, with a 96 mm stroke, those pistons are really flying!

Generally, an engine with a larger bore to stroke ratio is preferred for high end power. &nbsp;This is because with a larger bore, bigger valves can be installed which promotes breathing. &nbsp;Now, a turbo changes all that. &nbsp;In fact, it almost negates it since you are artificially pushing the air in instead of relying on the atmosphere.

Anyway, I like to look at the total area under the torque curve. &nbsp;Huge numbers do no good if they do not last. &nbsp;

Boostaholic says his engine doesn't do much until ~3500. &nbsp;That leaves 3500-7000 rpm for driving use. &nbsp;That's not bad, but what about leaving the line? &nbsp;What I'm getting to is this, if you don't mind keeping the engine spinning really fast, then high end power is where its at for the race track. &nbsp;If your going to be running around town, then don't forget that low end.

Sorry to ramble about too many things... <img src="#/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

True, my turbo takes awhile to spool, but the most pathetic thing is when I notmally drive around town, Ill look down at my avcr and see that in 40 minutes my rpms never went over 3400rpms, and I still am as fast/faster than all the other &quot;normal&quot; drivers off the line. I hardly ever use the turbo just driving around because it is so large that even at part throttle, it just seems to go too fast for everyone else. I like high end power more than anything, and am setting up my engine to pull all the way to an 8500rpm limiter, so from 3500-8500, my car is pulling HARD. And for me, thats possibly 1 reason I like the sr engine more. Im not saying that you shouldnt have any low end, but using my &quot;all engine&quot; mostly driving on everyday streets, I dont mind it a bit, and you can ask WeST too, you dont even notice that you arent using the turbo at every stop and go.

[kitoro]

I've ridden in a stock 240 b4... i didn't like it one bit.. it's engine MAY be torquey.. but like Nguyen said, it's lazy... very.

I've seen Nguyen's engine perform (i tailed him in my minivan once.. hehehehe...) it's sooooo fast. even if it doesn't have that much torque compared to the KA, it's still fast during pick-up.
high HP is the way to go.
plus i've heard his engine ROAR.. it's sooooo luvly... i luv the sound of turbo in the morning. hehehe.

-----

anyhoos..... no fair Justin! (i recall telling you sumthing about Nguyen's car... forgot...)
i haven't even gotten a ride in his car yet... aighz! no fair at all... where is this autotemp? i'll find it... if i had a car... =P
oh wellz...... i'll see Nguyen sumtime on some weekend hopefully and ask for a ride then!

Ahhhh...but we are comparing a TURBO KA engine vs a sr20det. I agree the stock KA isnt anything super, but add a turbo on there and it comes to life in ways never before dreamed of when looking at it stock. There isnt a right and wrong answer, just preference.

[nguyen]

I have driven val's fmax kit on his 98 240 at 7psi, it has lots of torques, with racing cams fuel upgrade clutch but it still not feels like it want to rev at higher rpm. don't get me wrong I love this car I love this motor and I aslo hate to loose. I got quite nervus pulling up to a civic sir even though I have 155hp when he has 160hp in theory I should kick his ass cause the rear drive will have better traction and everything. plus at only 80000km my ka have proven unreliable in NA trim so thought if I turbo it will kill it faster unless I have it rebuilt. &nbsp;which will cause more money than have an silvia heart transplant.

[Logo]

nguyen, how much did you end up spending on the sr20det transplant? &nbsp;Did you opt for a blacktop motor or did you settle for a redtop?

[nguyen]

I would buy the black top if I had to but lucky me I found a black top without vvtc but it has a t28 instead of a t25 big diferrence in performance, cause friend of mine has a red top, it wasn't very fast comparing to my car. I spent about 7000can so 4500 us for everything.

[ScottC]

On the subject of road racing, I think Hp is much more important than torque. Not that torque is unimportant though. For example, an F1 car makes 900+ Hp but only 250 lb/ft of torque. They are pretty much the fastest things around a track. Except for possibly CART, and CART engines are pretty much the same in terms of torque.

That being said though, as cars get heavie, they do need more torque to be motivated out of corners. Remember though, torque can be raised or lowered by gearing, and hp can't.

[Grant]

whats the difference between red top and black top? and is vvtc good or bad?

[nguyen]

a red top has 205hp when a black top has 220hp. vvtc is good, vvtc stand for variable valve timming control. the s15 silvia sr20det with vvtc produce 250hp in stock trim

[Logo]

nguyen, did you install the motor yourself or did you have a shop do it? &nbsp;If so how much would you say you spent after labor? &nbsp;Thanks <img src="#/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

[nguyen]

I did the swap myself costing me about us$4500

[Logo]

Awesome. &nbsp;Is it pretty labor intensive? &nbsp;How many hours did it take you to complete? &nbsp;A friend of the family's has his own shop so I might see if I could do it there. &nbsp;This will probably not be too soon as I still have to sell my stang and purchase my s14. &nbsp;Thanks for your help nguyen.

[nguyen]

what are you doing with a stang, I sure hope that it's not 5.0L, just kidding. yeah when you need help give me a call at 403-250-8677

[wav399]

Hey, just wondering what engines have the 6 speed transmission that can be swapped into the S13?

[Logo]

nguyen, I'm at work right now. &nbsp;Do you have aol instant messenger? &nbsp;If so IM me @suidside

[nguyen]

--

(Edited by nguyen at 10:56 pm on July 17, 2001)

[Logo]

nguyen, by the way I own a 2000 GT. &nbsp;I want something cheaper, more fun, and with a broader aftermarket. &nbsp;The modular 4.6's have a crappy aftermarket. &nbsp;

[kitoro]

man.. everyone replies so fast..

i've heard the KA needs a huge rebuild b4 slapping a blower onto it.. is this true? the engine itself wasn't built to handle the turbo in the beginning anyhow, and it results in massive damage or something like that, rite?

i dunno... high torque for AutoX seems reasonable, but high torque for road racing doesn't seem so feasible..
in Japan, the Silvia is a sweet car that many ppl drive b/c of it's cost efficiency and performance. A LOT of ppl touge wif their S13s,S14s, and S15s.. high speeds, coming down mountain corners... they drift and all that stuff too! what i'm trying to say is... even in normal street races in Japan, not too much high-end torque more preferrable b/c when it comes to cornering, you less likely spin out or massively oversteer ............ loss of control to a driver who doesn't know how to handle their car like that can mean major trouble.

when it comes to straight drag.. KA would prolly b preferrable... no real problems can be experienced then.. but if you take it on a track, it SHOULD show up on the corners. the driver SHOULD feel more resistance at the driving wheels due to the torque

[Logo]

From what I understand the s14 ka motor is capable of dealing with 12psi of boost. &nbsp;I wouldn't run this all the time without rebuilding the engine first. &nbsp;It's probably safe at 8psi for daily driving but I'm not 100% sure about that.

[Jay Wood]

Well since i am 17 and broke, i think the best choice would be to go with that ka. The reason that i dont want to do the sr swap is because after looking at heavy throttle.com, i found that to do the swap that i wanted would cost about 4,700. I would have to save all of my money from my weak paying job for 8 more months to get that (because i have car payments on my other car). Then, on top of that, i would still need to get better brakes and suspension to go with the more powerful car. Plus since i will be installing the engine with just the help of one friend, It would probably be a lot less of a headache to put the ka engine in the left hand drive 240 rather then modding a right hand drive sr engine to work. By the end of this summer, i will have 2000 dollars to go towards my engine swap. Hopefully that will be all i need to get the ka in my car and running. If anybody has any helpful hints on the install, your help would be most appreciated. Just incase i didn't say, my 240 is an 89...if that matters. &nbsp;

[15psi240sx]

you guys are kinda comparing apples to oranges. &nbsp;a ka24det with a 9.5 compression will have low end torque. &nbsp;say with that setup, you make 300hp at the wheels. &nbsp;this is at 12psi. &nbsp;now, you lower the compression to 8.5. &nbsp;you are now running 15psi. &nbsp;and you still are only making 300hp to the wheels. &nbsp;guess which one will have more torque down low? &nbsp;the high compression. &nbsp;when you go lower compression, you give up low end torque and gain reliability. &nbsp;a sr20det feels like a ka24de up until 2,500 rpm. &nbsp;from there, it feels faster. &nbsp;the ka24det is cheaper. &nbsp;its also easier to install then a sr20det.
btw, the sr20det can make 350hp to wheels on a stock block.
you will need to build the ka at maybe 275 to the wheels.
and one last thing, what about the ca18det? is nobody trying to do something different?
shaun

[PSI240SX]

I own a KA24DET in Orlando and had no problems until I put in an Apex S-AFC, this on top of the Jim wolf ECU I had was a problem. The original fuel map from the ECU provided the maximum amount of fuel that my injectors could handle, when I put the S-AFC in and tried to richen it, it actually was leaning it out because I didn't max out the settings on the AFC, this caused detonation and subsequently the melting of #3 piston. The custom kit was installed and running for a year and 3 months before it blew. The car ran [email protected] 103.32 mph with full interior, 17&quot; wheels and only 10 psi. This kit was thrown together for less than $2500 installed. I only dynoed 200.1 to the wheels with my 2 1/2&quot; exhaust hooked up, the run I made at the track was open exhaust. I was using a small T3 also. This whole topic has been gone over quite a bit but here's what you personnaly need to ask yourself. What do you want in the long run? Do you want to run 11's or will you be happy with just a turbo motor of some kind with some slight modification? Also do you want to be able to go to your local Nissan Dealer and pick up parts for your motor or have to struggle to find someone to get parts from and to work on it. If you really want to modify the engine to it's fullest you are gonna have to spend some dough on either motor. I have had an SR in my 89 and now I have a 96 with the KA, I prefer the KA but that is only my opinion. My KA is almost finished, hopefully within 3-5 weeks it will be running, this time with well over 400 horses at the wheels and gobbs of torque on race gas. I have added a T3/T4 60-1 Hifi, spearco intercooler with larger piping, custom intake manifold, custom fuel rail, MSD 72LB. injectors, Arias 8.5:1 pistons bored .5 over, Carillo rods, Mustang Cobra MAFS, 3&quot; downpipe, N1 exhaust, mildly ported and polished head, balanced and blueprinted crank. I'll update it's progress.

[kitoro]

i just got a ride in Nguyen's ride..................................
i luv the SR20... but like the guy said above, the SR20 does have the torque until 2000rpm or wutever... but it feels soooooooooooooooooooo fast after that!!! aaaaaaagh..... so sweet.

[justinc]

No fair i want a ride in the s14. Nguyen wanna help me build up my n/a s13. I cant afford the turbo's.

[nguyen]

I would love to justin, come by work and talk to me, it better to talk in person.

[justinc]

Alright where is ur work?

[kitoro]

Hey justin, didn't he already tell us where he worked? something like Autotemp?

[nguyen]

yeah autotemp north calgary.

[justinc]

n.e. or n.w. and whats the address

[justinc]

Nice car nguyen thanx for showing me it

[15psi240sx]

where are you all located? &nbsp;i'm in virginia. &nbsp;anyone out this way?
shaun

[confi168]

what state and city are you located at Nguyen?

[confi168]

i have a 92 s-13, and still confuse on whether to keep the ka or swap in the sr.

is it true i have to replace some kind of tougher pistons into my s-13 b4 fittin in a turbo?

does anyone know what are the works i must do before puttin a turbo?

[kitoro]

Nguyen, JustinC, and I are located in Canada.
nowhere close to Virginia that's for sure. We're in Calgary, Alberta.
Alberta is the province that's just above Montana i think.
Calgary's a sweet city, just wished it had a bigger scene for Nissan cars.. too many hondas on this side of North America. lah....

[kitoro]

if you're going wif the Ka-turbo mod, i heard you have to rebuild the engine to handle the turbo.
i personally like the SR, and i've been in Nguyen's SR-S14, it's fast, and fun... very limited lag too... does anyone know how big (or little) the turbo lag on a KA-turbo is?? i've been wondering about this for a while.

[SAPPER]

TESTING

[confi168]

kitoro, when you say rebuild engine... you mean change everything or only the pistons? cuz i already done the timing chain (replace new chain), new belts for all, new water pump, spark plugs, basically tune up everythin, but i didn't do anything w/ the piston tho.

you think it is possible for me to put in the turbo w/out changin the piston?

[matic 240sx]

( ka 2.4 vs sr 2.0 )
im building up my 97 240sx for a turbo... i think the ka can handle more... its a bigger engine so it can be bored out more than the sr right? bigger the engine the bigger the boost...

[Logo]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from matic 240sx on 5:13 am on July 28, 2001
( ka 2.4 vs sr 2.0 )
im building up my 97 240sx for a turbo... i think the ka can handle more... its a bigger engine so it can be bored out more than the sr right? bigger the engine the bigger the boost...</td></tr></table><span id='postcolor'>

I'm not too sure about the boring question. To find out which can be bored out more you'd need to check the bore spacing.

Personally, I like the sr more.

#1 It's lighter

#2 rev's high

#3 aluminum dissapates heat better than iron

#4 smaller cube engines respond better to boost

#5 the engine runs smoother due to the shorter stroke

#6 larger supporting aftermarket

#7 more reliable than a ka-t

...I'm sure that I could come up with more reasons for liking the sr but I'm drawing a blank at the moment. <img src="#/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

(Edited by Logo at 1:11 pm on July 28, 2001)

[confi168]

when you guys said bore or boring.....what do you guys mean? cuz im pretty new to car , so i know very little.



92 s-13

[Logo]

By boring, we mean boring out the cylinder so that we can fit a larger piston in the motor. &nbsp;This would increase the cubic inches of the motor. &nbsp;Some engines have so little space between cylinders that they can't be bored out much without decreasing reliability or increasing the chances that you might hit a water jacket.

[96SEChick]

From what I've heard and read, it is difficult to bore out the KA because of the thinner walls due to the fact that the block is cast iron. &nbsp;

[kitoro]

i don't know what 'rebuilding the engine' to put in the turbo means... i just know that there is a process of rebuilding SOMETHING in it. I'm guessing that it is most likely the pistons... but i have no clue for sure.

I think another reason to get the SR is that you don't have to necessarily rebuild anything... just buy it and install it. Only other mods i can think of are just putting on a new turbo, changing cams and pistons i guess. most ppl opt for the bigger turbo normally anyhoo.
and I luv the sound of the SR.. just a loud engine ripping through the air... sweet stuff.

did anyone find out what the KA's turbo lag is like? is it heavy? or do you even feel it at all?

[confi168]

that is true, the sound of KA doesn't sound that nice when compare to the SR.

actually i know a this toyota/mazda senior techinian and im plannin to have him install the SR for me in my s-13 when i get the money.

the problem is, is it legal?

I disagree with the sound of the KA, WeSTs car is probably the nicest sounding turbo car Ive ever seen. Most of that can be attributed to his external WG, but its truly beautiful. The more I think about it, for a budget and if you arent looking to be 400+hp fast, then I would say stick with the KA. I like the sr20 personally because it is exactly like my engine in almost everyway. Logo said all of the basic reasons it is a better engine to handle boost in these points....

#1 It's lighter

#2 rev's high

#3 aluminum dissapates heat better than iron

#4 smaller cube engines respond better to boost

#5 the engine runs smoother due to the shorter stroke

#6 larger supporting aftermarket

#7 more reliable than a ka-t

You may not think it is a big deal now, but when you start making your turbo come to life, high rpm hp is where it is at. Im having my engine balanced and pushing the rev limiter back to 8500, and the more you think about it, the most power your car can achieve will be in the higher rpm ranges if your turbo can flow enough air, when I shift at say 8000, my next gear starts already at 5000+ rpms, completely spooled and hauling ass. The smaller engine and shorter stroke will allow it to run boost much more effeciently and also you wont have to worry about the reliability issues. The 2.4l KA will have more torque at low rpms, but the sr should eat it alive after say 4500-5000 rpms. Lower compression, higher boost levels. The larger the bore or the larger the engine doesnt necessicarilly translate to more hp. I looked into getting a 2.4l stroker motor for my car, but found it would kill my top end, and I love the topend. So basically they are 2 different engines for 2 different purposes. If you want lots of boost and easy upgradability, go sr, if you want a turbo but want it cheaper, go with the KA.

[kitoro]

man.. i wish i had a car to fool around with to get to know all these nitty gritty things a bit more.

[West]

Go here!

<a href="#/forums/cgi-bin/topic.cgi?forum=1&topic=13" target='_blank'>#/forums/cgi-bin/topic.cgi?forum=1&amp;topic=13</a>

[Logo]

Boostaholic, I never really thought of thinks like that. &nbsp;A higher reving engine would definately be better for higher amounts of boost. &nbsp;High amounts of boost require large turbo's that spool slowly. &nbsp;A higher reving engine would take more advantage of a larger turbo becuase it could still make power while the turbos are fully spooled.

[kitoro]

since the SR is a high revving engine... does it require a tach that displays higher revs? or is that a stupid idea.
i mean, i've seen tachs that have like redlines at like 12000rpm and so on...

[Logo]

Getting an aftermarket tach wouldn't be a bad idea for the sr swap. &nbsp;However, the stock ka tach should work fine despite the redline being different.

See! Just trying to make you think! <img src="#/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'> Just to say you wanted a pure drag car. Most likely unstreetable but nonetheless...you could buy a turbo that spools at 5000 rpms and shoves your nuts into the back of the seat because as soon as you shift, the turbo is still spooled. Launching isnt that big of a deal if you buy a MSD DIS2 or equivalent since it has a 2 step rev limiter meaning when you line up on the line you floor the throttle and the ignition only allows it to go as high as you have set, say 5500 rpms. As soon as you let the clutch out it engages at a perfect launch everytime and your turbo is hauling some ass, floor it up to 8500-9000 rpms, change gears, your turbo is still in its maximum effencicy range and never looses its boost. If you had an automatic car this would be even better because automatics never let off the gas and never let off any boost pressure which would help you to have better MPH in the 1/4. So if all in all you want the fastest car you can imagine, high rpms are where its at. Not to say the torquey KA cant be fast, there is just alot more room to expand on the sr20 in terms of hp than the KA. I got a little sidetracked but ooh well. Its late and Im delerious. <img src="#/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=';)'>

[Grant]

Well I'm not going to be racing too much, but I would like to have a fast car later on. I was wondering if a SR20det would be a easily servicable engine in the US. I'm not that good with cars myself, and I jsut dont want the car to be too expensive to keep.

Either route you go...the KA24DET or the sr20det, both are going to be a pain to have people work on it.

[kitoro]

what do you mean exactly by 'servicable'?
oil changes are simple enuff..
but what else? tune-ups come and go... that requires a lot of work for sure... but.......... is that what 'servicable' applies to??

Say you have an oil leak or any type of pressure leak through the whole system...who can you take the car too? With either engine any Nissan dealership will laugh at you and tell you they cant work on it and if you go to a specialty shop, they will be expensive and probably have no idea what they are doing. No engine runs perfect for its whole life, and regardless of what happens, when something goes wrong, it is going to be costly.

so u expecting ur engine to get wrecked josh? cuz that would suck with ur sweet ass dsm

[confi168]

wait a minute......is the sr engine legal in the us? if it is, then how come we don see any s-15 in the US?

No, I dont expect anything to happen, but just statiung that many many engines have a habit of eventually breaking something (aka...99%). Either the KA24DET or the SR20DET are going to be difficult to find KNOWLKEDGABLE people to work on them for cheap.

[Jay Wood]

Before i can have a ka24det, i must first have a ka24de...where can i get one for a good price? Ebay and thepartstrader.com have both left me empty handed. Any other places i can look?

[matic 240sx]

my friend david, he knows everything about engines. &nbsp;he works on his eclipse all by himself. &nbsp;he has never came across a problem. &nbsp;oh yea.. he will be running 10s. &nbsp;he is putting a big ass turbo and a fogger NOS kit. &nbsp;so he is going to be hauling... he said hes not gonna stop on that car until he can put it in reverse and bunny hop! heh

[Jay Wood]

I know that I wanted to get a ka motor for my swap but due to the fact that i could not find one, i started looking around for an sr motor...guess what, i found one. Im still getting the rest of the info from the guy thats selling the engine but from what i know, all the engine needs is a wiring harness, an ignitor chip, and a mass air flow meter. With the swap needing those things to be complete, the price is 1750. Plus the guy ended up living in the very same town as me so I dont need to worry about shiping. My question to you guys...is this a good idea or is the guy asking too much? He said that he is selling it because he doesn't have enough money to finish the swap. Thanks for all help given.

[kitoro]

1750?
depends on the type of SR you're looking at.
i assume it'll be either an S13 blacktop or redtop for that pricing...
that's not too shabby.
cuz the S13 SRs run for about 2000-2500 usually..
S15s are almost $6k... so work the math there.

[Jay Wood]

The motor is an s13 red top and among the things that I said that it needed before, i also found that I will need to get an intercooler as well as a radiator. Is it worth it?

[Jeff240sx]

A wiring harness, ignitor chip, and MAF are kinda hard to get, so I've heard. &nbsp;More sites recommend that you get those with the engine, cuz they are eexpensive!
-Jeff

[Jay Wood]

somebody told me that i could use the wiring harness that i have with my ka24e for the sr motor. Is that true?

[Jeff240sx]

nope... not from what i've heard. &nbsp;I dunno a good replacement for the ignitor chip either. &nbsp;But for the MAF sensor, you can get a Cobra MAF, a Z32 MAF or the Apez'i or HKS better-than-MAF thing. &nbsp;But you would need the ECM reprogramed by Jim Wolf.
And no, you can't use the wiring harness from a KA24e.
-Jeff

[Jay Wood]

While looking through heavythrottle.com, i found most of the parts that are needed to complete the swap. There was no price for the harness though...does anybody have any idea of how much it may cost? Thanks for all help given.