Perfect Turbo

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
nightshift
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What turbo tops out around 400 to 450 and provides the quickest spool up? also I want to use the car for roadracing and but also get some good topspeed out of it . .


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SpeedRacer1
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Something like the HKS GT-RS? That would be my choice for quick spool, good power, and price.

I H8 UR DSM
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true

achilles0t
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why do all you guys spend so much money on hks/greddy/etc turbos there are lots of cheaper turbo's that can make crazy power

battyx
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achilles0t wrote:why do all you guys spend so much money on hks/greddy/etc turbos there are lots of cheaper turbo's that can make crazy power


Like? And are they ballbearing, will they spool quickly, give good throttle response?

ItzGenX
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The cheaper turbos require fitted water/oil lines and custom manifold and turbo extension/wastegate routing. The GT-RS can fit the stock location and fully ball bearing. Money over hassel. Sort of why people paid so much for the first Playstation2's released, less hassel. Also, the turbo should be well manufactured and last pretty long provided on the maker's reputation.

I H8 UR DSM
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achilles0t wrote:why do all you guys spend so much money on hks/greddy/etc turbos there are lots of cheaper turbo's that can make crazy power


Do you buy your socks at the dollar store?

Most "Cheap" parts are not quality.

Jessehttp://www.Rollhard.com

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godspeed
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so are you saying that a t3/t4 is a bad turbo?

I H8 UR DSM
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For his goals...yes.

Also the "t3/t4" isnt a turbo manufacturer....a Turbonetics T3/T4 ball bearing is better than a Cheapturbos.com T3/T4 ball bearing, and so forth..

But i also know the stock manifold will not flow enough air to get to his 450hp goals....although i think those goals need some rethinking : )

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Dori Dori
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GT-RS is too small and will produce a lot of heat. Something bigger would be better for road racing. There will be sacrafices to be made either way though. You want fast spool? Get a small turbo, good for the street...but don't get upset when your EGT's are through the roof after 20 minutes on a road course. Get something a little bigger (not big, just medium sized), less streetable; but you'll produce less heat, more power, and at less psi! You won't have to worry about spool up since you're always at high rpm.

If you have lots of cash, go with an HKS 3037 kit. You could get the Greddy T67 kit too. Look at Apexi. Or build your own kit with something like a T3/T4, new Garret GT turbo, or even a mitsu turbo (close in size to the T67). Just my $.02.:)

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Dori Dori
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Also, in your signature, you have 'Cusco Piro Ball Mounts' listed...that's engrish for Pillow Ball (which is a shperical bushing to most americans)...just so you know (since nothing else in your description has engrish in it I assumed it was a mistake).

nightshift
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nah I know that Piro=Pillow. At the time I added that I had just gotten them and was stoked about getting them and put it down as "Piro" just for that lil JDM touch. Thanks for the advice on the turbo size though.

DSM why do you think I need to rethink my horsepower goals? If its budget, I didnt plan on just sinking in all the money at once, but its nice to know what you need, that is my goal however. As far as I know the engine is good up to about 475 without having to rework the internals, I really only want to hit 400 but no one ever hits the exact # so I asked for 400 to 450.

I H8 UR DSM
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well i guess there is no such thing as too much hp, but for a roadrace car, thats a good amount...id definitly say a gt3037 would be a nice turbo for that kinda car....a 450hp 240 is hard to turn, and a lot easier to just go straight : ) but as long as the suspension and chassis can handle it, 450hp on a roadcourse would be fun as hell...i just dont liket the t3/t4's, esp. for roadracing....its not a 'bad' drag turbo

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hokiruu
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'95 240sx/s14 SR20DET (in 2000) SOLD
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nightshift wrote: As far as I know the engine is good up to about 475 without having to rework the internals
Umm, I don't even wanna dare you to try to get that much on your stock internals, but its really more like 350 and that's already pushing it. This aint no 2JZGTE!

ITR_KILLR
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a 52trim .73A/R HKS GT3037 should do the trick if you have stock internals, it makes enough power to toast your stock motor if you really want it to

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Dori Dori
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450 whp is acheivable on stock internals, that's for sure. Secret Services in Tampa has an SR pushing that much at 18psi on a Garrett GT35r turbo. It has some head work (cams, springs, ras) but the bottom end is stock.

ITR_KILLR
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I've been waiting to see an SR w/ the GT35, do you know what trims and A/R the one they are using are? whats the efficiency like on that turbo, i bet that thing would be a real beast with a built bottom end and more boost.

ITR_KILLR
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does Secret Services have a website or anything??

ITR_KILLR
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the compressor on the GT35 flows 60Lb/Min!!!!

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Dori Dori
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Mattback on this board works there so you can get contact info from him, but he's not the one to talk to about the car.

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Dori Dori
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ITR_KILLR wrote:the compressor on the GT35 flows 60Lb/Min!!!!


Where'd you see that? I've seen 50 - 55...

ITR_KILLR
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thanks

I H8 UR DSM
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are you all talking about enthalpy's car? that didnt have any motor trouble? You all sure about that??????

ITR_KILLR
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Dori Dori
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The GT35r does 60 lbs/min (56 trim compressor)The GT30 does 55 lbs/min (52 trim compressor)

Thats according to extremeboost.com (they sell lots of GT turbos). I'd love to find a compressor map for one, but I can't.:(

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Dori Dori
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That's the GT40...

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Dori Dori
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I H8 UR DSM wrote:are you all talking about enthalpy's car? that didnt have any motor trouble? You all sure about that??????


I know he's on his second motor, but didn't the first on go b/c of a spun bearing? Which is an SR problem AFAIK, not a power problem.

nightshift
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I dont remember where I read it but supposedly you can reach 475 on the stock bottom end, but everything else has to be upgraded fuel, turbo,manifod ,intercooler yadda yadda and there has to be some serious fuel mangement. The convo I had was so far back I dont remeber any specifics (sux) but the particular car was running i think 19 to 21 PSI . . . of course I dont want a blown up motor i just want to pass 400 i dont care if im only making 401.

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mattback
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the first motor failed due to 1: being raced every single time it was out, the car was a race car only, it never really got taken care of as as treet car.

2: it popped a head gasket, which consequently put coolant into the oil and ate the first bearing. if the factory stock headgasket had not failed, thta wouldn't have happend.

The new motor is using an APEX metal headgasket.

Its a 56 Trim GT3040 with the 82mm inducer (35R compressor)

I can answer any questions regarding that car as I helped build and tune the whole thing.

I H8 UR DSM
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Thats all i was saying : )


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