sr20 at high boost

[got_boost702]

Im getting ready to rebuild the engine and prepare it for high boost. Can you recommend some good forged rods, pistons, metal gasket and all the other parts neccessary to prep the sr for high boost such as 20-25psi.

[I H8 UR DSM]

What are your goals? Do you want the "best rods and pistons"? Middle level? Low Level? It really depends what you want.

The best piston/rod combo you'll find is going to be MTS Custom pistons/rods..made by Weisco and Pauter respectively to their custom specs...

Jun uses Carillo rods which is prob the next step down.

everyone makes pistons, weisco, hks, grex, toda, tomei etc etc, it depends if you want 450hp, or 600hp, or 900hp, ya know?

Jesse

[ITR_KILLR]

when going to forged pistons, should you just hone the cylinder walls and use stock bore, or bore to 87mm?? (I would not resleeve the block!) I've heard mixed responses about this concerning nikasil and thin factory sleeves?

[pampadori]

JWT Has bult many sr20det's without using sleeves with 87mm pistons and even 87.5mm. the hks sleeves allow up to 87mm they say. that is crap, i'm going to stuff 87.5mm pistons in mine and tell ya what it does! shaun

[got_boost702]

Thx for the help. Is there any other parts that would be neccasary to replace to prevent damage to the engine at high levels of boost. As far as quality, i dont want junk yard specials but i want probably mid level. My goal is to have a 10 second show car which means i will need to get to around 600hp to bust into the 10s.

[GraySilvia]

600hp for 10's??? sheesh. TwinTurboZ with the SR powered RX-7 is around 450whp and flirting with 10 second slips. The S13 weighs about the same as an FD, maybe a little less.

[ItzGenX]

600hp is like 9's or maybe even 8.

[Thecollector]

You can have all the engine you want, make sure you can put it to the wheels. I dont think the stock transmission can handle that (not sure). Might want to look into replacing the rear end also.

93 180sxwrapped in Veilside

[got_boost702]

okay maybe 600hp is a bit high. i was just basing that off of a 1/4 mile calculator assuming with the SR20 a 98 240 would weigh 2750, my estimate is probably sum what heavier than what it would actually weigh. But back to the original question to prepare for high boost i should get forged rods, halfshafts, pistons, metal gaskets, upgrade the transmission is there anything im missing? if so please let me know. and prices if you know, they dont have to be exact but a rough estimate would be greatly appreciated.

[f150intally]

Actually,the SR powered rx-7, also known as the SRX-1, is less than 400 whp (mustang dyno) and flirting with 10s. He ran an 11.12 last thursday.

[Nathan]

Those 1/4 mile calculators arent worth crap...and there is a LOT you should do to hit those kind of power levels.

[Siddhartha]

It's ALL about traction. You can have a billion horsepower and run a 27.9 in the quarter mile w/o traction. Ok, maybe thats an exaggeration, but seriously, you should hit 10s on less hp than 600, provided you take care of traction FIRST. Oh, yeah, install bigger brakes, too. Friend of mine was installing a chey LT-1 in a pontiac fiero. I asked him what he was doing about brakes and his reply was "I don't wanna slow down, I'm installing engine to go faster . . ." ::smacks forehead:: I convinced him to do brake upgrade, too.

[got_boost702]

Siddhartha, I know exactly what your talking about when u talk bout upgrading the brakes as well as the suspension. It is so funny the people i talk to bout brakes they have the same attitude, "i dont need to slow down". I am going to do the 300zx brake conversion with Brembo brakes, and with drilled/slotted rotors, steel brakes lines. when i do the brake conversion do i need to "upgrade" the master cylinder? I wanna totally upgrade the suspension as well, but right now im trying to get a list of all the parts i need to prepare the engine for boost so it doesnt take a crap when i decide to up the boost. Please help, and seeings how he brout up brakes help wit that would be good too.

[Zaxx84]

Does anyone have any experience with the Tomei 2.2 Stroker kit?? Now that the SR20 is in with all the necessary bolt-ons, I am now thinking towards the next stages in building a bullet-proof motor. Any suggestions?

[I H8 UR DSM]

Depends really on what your goals and financial situation is as far as what your intending on putting into the car....we can help you with whatever goals/budget you have.

Jessehttp://www.rollhard.com

[Zaxx84]

Well, I don't really have a budget (within reason), so I am not afraid to spend money on the car. My goal is simply a 400whp daily driven street car that I can beat the hell out of, and not worry about it breaking.

With that info in mind, what would you do?

[I H8 UR DSM]

Well when "without breaking" in mind, i'd say pisons/rods/headgasket/cams/camgears should be done w/ a turbo kit...yes you can run 400whp on a stock motor, but should you? and would i consider it safe to beat on for a long time? Well...i'd feel a lot safer w/ a built motor

[Zaxx84]

No, I would not run 400whp on a stock motor all day long. That is why im asking for your guys' suggestions on either a stroker kit or individual internals.

Thanks again, Zack

[robyc]

I dont think the stock transmission can handle that (not sure). Might want to look into replacing the rear end also.

93 180sxwrapped in Veilside

transmission is fine for what you want, rear end wise, well depends

[MainEvent212]

i'd say go with forged pistons and rods...dont go all turbo for your 400hp...look into some cams, port/polished heads...make it well roudned...dont just throw on a big turbo and call it quits...

also look into a good LSD..possibly nismoSSS or cusco 1.5 way...

fat tires of course...

i dont nkow if u want 400hp all the time...maybe look to have 400hp at 20psi...not 400 at streetable boost (8-10 psi)

[Nurv]

i love people who say that having more HP is the goal and not to slow down as much, tell that to the top fuel guys. heh. Siddhartha is right, its all about traction. i would do suspension, then brakes, then the engine. If money is no object then just get one of those crate SR22 motors they use in JGTC. lol. anyways. coming backing into reality.its all about tuning. just my .02

[240Z TwinTurbo]

The guy who originally asked this question has a 200sx in his sig., which means to run 10's he will need around 500hp (wheel).... On our drag civic we originally went 10.87 at 129 with 419hp... we then upped it to 564 and went 10.32 at 146 but keep in mind the car only weighs 1975 w/driver... On the SRX-1 on stock internals and the car weighing in at 2650 the car went 11.12 with 348hp and a 50 shot which we did not dyno because of time... We are building a motor now with wiseco pistons and eagle rods, which will hopefuly be installed later this week... We did some tuning with cams HKS step 2 264's and gained 50 hp at the wheels... making 393 at the wheels uncorrected... We have not sprayed it yet because, we are at the limit of the stock motor.... Good luck, a show car that runs 10's is very difficult!!!

Shaun

[I H8 UR DSM]

On Charlies Civic Hatch, with 205fwhp, ran a 11.5. http://www.b20vtec.com

; )