Saico

i'm starting my build and attempting to reach 4-500 crank hp

S14 blacktop sr20det
Cp piston 86.5mm (should i go 8.5:1 or 9:1.. will be runnin street 94 oct gaz)
eagle rod stock stroke
acl bearing (hole set)
oem seals all around
cupper ringned deck
Bc stage 2 cam
Bc spring+retainer
tomei rocker arm stopper
3angle valve job
arp head+main rod bolt
top mount synapse Vband manifold
Gt3071r @ 22psi (dyno only, will daily boost @ 16psi)
3'' straight exhaust
tial 44 ewg
z32 Maf
Five0 750cc injector
Walbro 255lph fuel pump


correct me if i have choosed wrong parts or mix of parts or have a better combo..

time has come for me to order my piston and my main question, i'm hesitating between 8.5:1Cr or 9:1Cr ?!?

thanks in advance!

ultimateirving

low compression for high boost, and vica versa. if DD will be 16psi, then high compression will yield more power..

army240

It will depend on the tune... and what engine management do you want?! But yeah, you should be able to reach that goal with that setup.

For your CR... keep doing some research... you will see the pros and cons of it. put at that boost, I would personnally go with 9:1...

You might reconsider the BC Cam... they're not the best on the market...

Anyway, GL!

See ya,

Frank

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Saico

i wanted hks, but they're back order for who knows how long, i don't want to upgrade to solid lifter and all the blablabla needed :P 22psi is only for number, plus meaby a few drag races :P

has for the tune it'll be nistune

OkiDori17

for 500hp your injectors will almost be maxed, id go with some 1000cc ones to be safe
im using injector dynamics ID1000's, theyre amazing
youll have to switch to top feed though

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'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

MikeisNissan

Cool tread.

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Saico

there's noway i can find 1000cc side feed ?

OkiDori17

no haha
the highest side feed are the 740s
the 1000s are well worth it though =]

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'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

Saico

awww shooot :P

if you guys wanna fallow my build tread you can fallow it here!

Kouki S14 BUILD thread

OkiDori17

you should go top feed if you have the money
its well worth it

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'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

vivaportugal9

The switch to top feed is not that expensive though. Just really mostly getting the rail and new injectors and switching up some lines.

vivaportugal9

Id say hks or Tomei cams instead of bc.

Obviously already stated is your injector issue, upgrading to 1000cc would be ideal.

maybe check out a 5857 precision turbo as there new billet series are kicking ass.

as for compression 9.1 seems to be the best choice.

Saico

i'm not too familiar with hks or tomei' cam.. wich model should i choose if i wanna keep my stock lifter+ Bc spring and retainer, without having to upgrade to solide lifters

OkiDori17

you can do either without having to upgrade to solid lifters
tomei poncams IMO are better only cause im running the procams haha
plus tomei is cheaper

__________________
'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

army240

Sard does 850cc sidefeed... I'm using them on my setup... you only need to redo the harness plugs and add collars to hold them in place(about 30$ for 4 collars).

Also, you could add a Greddy Intake to the list!

Frank

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OkiDori17

hmm...i didnt know SARD had 850's

theyd be good for the 400hp mark, but trying to go to 500 they would be way over their duty cycle...up to about 440 give or take
he would need 1000's if he wants to run 22lbs of boost

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'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

codyace

And with that under consideration, higher the compression the better the tune needs to be. In the generic sense of things, the difference between 8.5:1 and 9:1 wouldn't be noticed by many, and I'd suggest staying sub 9:1 for a big boost car, just for safety alone.

Jim Wolf Technology S4 cams, or C1 cams would be the way to fly. C1 require springs, but S4 do not. 7850RPM is plenty safe with the S4 cams on stock valvetrain.

InjectorDynamic stuff is super nice!

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codyace

And now I'll address things to change:

8.5:1 is my personal prefresnce, just a safety feature

Eagle stuff is no better than stock stuff. I'd stay away from it.

No need to O ring at all. Apexi or Cosworth Headgasket is plenty.

Total junk. JWT cams and NO valvetrain modifications (yes, you can keep stock stuff), or you can add JWT springs if you wawnt.

The general rule of thumb is try and keep cam and spring companies the same, as they have been tested together. BC stuff is cheap junk.

Not needed.

May be a bit small if you really turn the wick up on the turbo

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OkiDori17

id listen to codyace...he knows his shit haha

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'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

Saico

Jim Wolf Technology, never heard of that brand,
where can i purchase it?

''Eagle stuff is no better than stock stuff. I'd stay away from it.''
then what do you suggest?

''No need to O ring at all. Apexi or Cosworth Headgasket is plenty.''
i dealed it with the machine shop.. they gave it for free, with that done, i can put on a stock Headgasket!


''Total junk. JWT cams and NO valvetrain modifications (yes, you can keep stock stuff), or you can add JWT springs if you wawnt.''
i already have the Bc spring and retainers... better sale them and put the stock on back on it?

Saico

should i just put in pistons and bearing, keeping crank and rod stock? piston ringland are totally destroyed on the 4th piston, so noway i can reuse them :P

i've heard oem rod were good for 500hp (maxed out tho)

since your saying eagle aren't better then oem, i should save that 3-400$ for something else then?!

OkiDori17

crank is good, just get it resurfaced and balance. almost any machine shop can do it and its like $20
manly rods are good you should save on the eagle and go manly =]

__________________
'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

Saico

are they really necessary, of course its better, but rly necessary?... that's my point

OkiDori17

i just built mine so i wouldnt have to later on
if you plan on dd-ing a 500hp car i would just to be safe

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'92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

niscur29

Mines up and running....still breaking it in....Shooting for around 400whp but whatever it is it is.

Mahle Pistons (8.5:1) .20 over
Eagle Rods/ARP HDW
Nismo 740's
Enthalpy ECU
Top Mount precision 50 trim with Peakboost mani setup tial 44mm ewg
Stock Head with HKS 272 Step 2 i/e, BC springs retainers
Cometic Head Gasket (I know well see how long it lasts)
ARP Head Studs
Denso Supra TT fuel pump
Tomei Small FPR

All new oem seals, new OEM main cap bolts,new rockers, timing chain set, etc etc. Mine came with a freddy manifold and sard 850's and AEM standalone, but I wanted to simply it and go with the enthalpy ecu and stock intake.

Its a lotta work and plan on having a backup fund because you will find shit you need that you didnt plan on.

vivaportugal9

U willing to sell the aem standalone and freddy intake manifold?? If so pm me

niscur29

HAHA long gone dude!

codyace

May not be popular in Europe, but they are the SR cam guru

JIM WOLF TECHNOLOGY, INC. / NISSAN PERFORMANCE / NISSAN RACING /INFINITI PERFORMANCE Check their site out.

JWT S4 cams with your 30r turbo will work great.

Eagle is no better than OEM. If all you want is 400 whp, than OEM is plenty; in fact some would argue OEM is good for 500 whp as well. However if you had to upgrade, the Manly rods seem to be your best choice for a street car.

I hope it works out for you.

I'd get rid of them and run quality stuff. If you were only looking for 250-350 whp you'd be fine, but with such cash in a setup running cheap under engineered stuff isn't the way to fly.

Another thing to add (and it may be common sense to some of us) but getting a 2nd car/beater is the first mod I'd make.

__________________

Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information!

Quest Alternator Conversions for SR20! Check my Group Buy!

Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

Saico

i already own a second car/winter beater wich is in mint shape :P i'm having a slow build wich i can only work on weekends once in a while soo if its more expenssive it doesn't matter, will only take a lil extra time before takin it out, but i also want it out asap!! :P

has for the cam, there's S4 ans S4HD, thats the difference, i assume your talking about the S4 not the S4HD right?

stevecorrado88

Im running 22 psi with a gt3071r with stock internals and just 740cc injectors and tomei poncams with a pfc and it runs strong and a daily driver. i wouldnt be afraid to run 20-22 psi with your setup as long as you torque and make sure u do everything right problems tends to happen alot quicker when your running high hp.