I plan on having 350-400hp on my 87TII when completly done with it. 300 plus a 50 shot of nitrous would be satisfactory.
I know you can modify the stock turbo by getting a larger compressor wheel. Do I have to purchase any other parts to do this? If so which ones? Any suggestions on a website to get parts from? Any precautions I should take when doing this would be appreciated also. Thank you.

 

www.bnrsupercars.com
The best in my opinion. Answer you questions, do the work, good rep. Good people. Get in touch with Bryan.

 

i was about to post the same reply as gr0undz3r0

 

OK thanks. If anyone else has any thought LMK. I guess I should also mention I fear my turbo may be going. Anything about that?

gr0undz3r0- you replied so quick I couldn't even edit my post.. lol

 

Two stock turbochargers + 1 stock 87 TII engine + 15 psi = 375-400 rwhp

 

BS!
you would have to have 720 primaries and 720 secondary injectors! you would have to have something to adjust your timming you would have to have an aftermarket IC, BOV, oil lines, vacume lines, a strong engine, free flowing exhaust + intake, 255L/h feul pump, air feul ration guage, boost guage, FCD (unless you do stand alone). it all add up you can get about 300 hp out of an s5 TII for about $4000 on strong engine. Trust me I am in progress of 400-450hp no NOS and it is a venture let me reasure you it aint that easy that is ALOT of HP!!!

 

By stock TII engine I meant stock internals. Of course one would have to upgrade all the other stuff... intercooler, ignition, "timming", exhaust, "vacume" hoses, intake, "feul" system, etc. I never said it would be easy or cheap either. It's just an alternative and it's been done by a few guys and worked out well for them.

Also, you are going to need a hell of a lot bigger than 720 cc secondary injectors to attain 400 rwhp. But if that is what you are going to run on your engine, then give me a call for when you test it out so I can LOL when it goes boom.

 

Another thing you can get done to your turbo is to have the fan blades trimmed for faster spooling. I have a 3" rear compressor and trimmed blades on a T04 Turbonetics hybrid. I was told my turbo will push at least 27lbs. I have yet to beef up my spark but I hit 20 lbs. in second gear. I **** my pants. I am pushing 400 or better horses but I have a Jay-Tech Intake with a Holley Carburetor on it. No fuel injection=no hot start!

 

bridgeported:
720cc primaries + 720cc secondaries are good to about 475hp! after that they are loaded too much! and then engine goes boom!

 

www.FC3s-PRO.com has a nice section called "from mild to wild" that might be of some help.

 

well, i don't want to get off topic starting an argument in this thread... but 720 x 720 is not going to get you 475 hp on a rotary.

 

Um....



424 rwhp made on 4x720cc injectors. At just 15% drivetrain loss, thats still 487.6 hp at the flywheel.

 

'

You're assuming stock fuel pressure and duty cycles of less than 85%.

 

Not EXACTLY true... they are safe to 350 hp, unless you exceed an 85% duty cycle (kill your injectors quickly), and/or jack up the fuel pressure.