na4now

Im finally starting to order parts for my 92 sc300. My goal is 500-500whp (pump gas only), with a semi-conservative budget. I figure $10K for EVERYTHING is all I want to put into it, if thats possible. Ive spent about $2800 so far. This car wheel be just for fun. I might take it to the track once or twice, but will be mainly for evening and weekend fun.

My car has 187K miles and is a factory 5-speed. I havent done a compression or leak down test on it yet, but I can tell you that it runs PERFECT, was well maintained,... and performs as it supposed to. That might not mean much. Worst case, I figure Ill use a lower mile engine, if I have to.

Either way the engine will be pulled, cleaned up will all new gaskets, and there will be some paiinting, coating, and polishing done, before its put back in.

What I have purchased so far:
-freshened up Mk3 r154
-new 1jz bell housing
-new stock MK3 flywheel
-HPF bronze clutch kit
-Autometer Pro-Comp gauges for boost, oil pressure, oil temp, water temp, and fuel pressure
-Walbro 255 fuel pump (installed, to replace failed factory one. Also bypassed the "fuel pump ecu")
-Drewgo na-t manifold, modified for the SC300. (should recieve next week)

I plan on using a AEM EMS for tuning.

So, ....

-Which turbo? ........(Ive been told a t67, ..but which one?)
-Which wastegate?
-Which injectors? ....(750cc maybe? But, which ones do I order?)
-Which headgasket? Brand, and size?
-What size intercooler?
-Will I need to upgrade to twin fuel pumps, larger fuel line, ...maybe a different fuel rail??? I know Ill atleast need a fpr.

TTSC3

PT67R. It will spool very fast, and give you a very wide powerband.
Tial 44mm, or something similar. They're all comparable though.
I'm making the whp in my sig with stock injectors and fuel system (USDM 550's w/resistor box, but if you just wanna upgrade injectors, 750's will be perfect)
A Greddy 3 row is all you need, and what I would suggest. Tried and proven.
If you wanna make big power, you'll need the entire fuel system upgraded. That's what I've got planned next, as I'm pretty much maxed out on the stock stuff at this point. I don't even have AFPR,. I'm still running that stock as well.

SCoupe

"Maxed out"?, I think you are in fantasy land. I am stunned that you can make 540whp on oem 550 injectors. That is by far (like 100 whp) the highest number anyone has ever posted for those injectors. Many of us are in the a/f danger zone in low 400's.

sc250tt

+1. the most ive seen with 550's is about 490 hp anything more than that is playing with fire.

na4now

Okay, Im not going to use 550's. So, thats out of the way.


Does anyone agree with using a PT67R?
Which one is it?: http://www.precisionturbo.net/turboc...tegory_id=3027

And aTial 44mm wastegate??? Anyone else agree?

Any particular 750cc injectors? Or, will any ones work?

Curry

iTrader: (1)

44mm tial is perfect. For injectors I think a lot of folks are using the RC?

dejacky

iTrader: (2)

Yes I agree with getting the dual ball beraing Precision Turbo PT67 model. I'm using the PT6776 RE model: p-trim exhaust wheel and S-compressor cover (4inch compressor intake diameter). I recommend you get the .68 a/r exhaust housing to take advantage of good street response and spool.

LexusFTW

iTrader: (7)

He wont reach his 500-550 whp on pump with the .68
You will need a .9x or larger and good luck trying to fit it under the stock intake manifold. You may as well add a ffim to your budget.
This setup alone may not even yield you your hp goal. Look into meth injection or cams to put you over the limit.

SC4_FI

thats just not true for a 2jz/1jz, it can be done on a .68 or larger housing, and you definatly dont need meth to reach 500whp

TTSC3

I'm in fantasy land? That's the largest number anyones posted? I'm not sure how good the tunes on peoples cars are, but with an AEM, you can do much more with the stock fuel system than people do with piggybacks. Go on Supraforums and you'll see that many people have made about the same as what I've made. There is no way that 550's are maxed out with an AEM at low 400's. Unless you've got some fuel system deficiencies, that's just a fact.

TTSC3

Don't get the .68 housing. Iff you use the .68 housing, you'll get a TQ spike, and drastic drop in your torque curve, due to the back pressure from that tiny A/R. The turbo will run out of breath. Get the .84 or above, because with the AEM, you'll be able to dial in the timing map correctly, and end up with a excellent powerband.

Gunnar

My friend's TT Supra just put down 485whp on stock fuel pump and the OEM 550's and would've made at least 500 if his EBC solenoid wasn't bleeding off boost.

na4now

Thats cool guys. Im going with 750cc ones, anyway.

Can anyone with first hand experience, confirm what size exhaust housing I should go with???? Please.

Also, what headgasket will be best?

Gunnar

I'd say .81 on the exhaust housing.

na4now

And the other stuff? Any opinions?