New 1994 Twin Turbo Auto Trans, So Where to Start

[pwpanas]

Originally Posted by consol1

Supreme Fuel in my world is pump gas/91 octane…

Unfortunately, that pretty much sucks. Most of the rest of the US has access to 93 octane (calculated using (R+M)/2), which is more in-line with slightly-more-than oem boost levels. If you’re talking about big(er) power (eg. 600rwhp), there’s no practical way to achieve that power level on pump gas.

Originally Posted by consol1

… Thank you for the leak down videos. Did the compressions last night all between 172 and 174. That seems pretty good to me…

Agreed.

Originally Posted by consol1

…I am shooting for the 5 to 6 hundred + in WHP…

Pardon me for being blunt, but that’s not specific enough. We can build your Mkiv Supra Turbo to the specs of 500rwhp OR 525rwp OR 550rwhp OR 575rwhp OR 600rwhp…but I can’t help you build it to a range. You have to pick one point …most likely the max you want to achieve… and then we build to that one spec.

Originally Posted by consol1

…I was thinking about buying a new stand alone programable ECU with more than on map. …

PLEASE “hold your horses”. We haven’t even decided on a power spec yet. No need to jump to specific components.

Originally Posted by consol1

…Put the bolt on parts needed to run race fuel or 91 octane with 2 different maps…

If 2 different boost levels is one of your requirements (for whatever reason – I may ask for the opportunity to talk you out of this)…we can definitely include that in the specs for the build. Again, let’s not jump to any specific solutions yet.

Originally Posted by consol1

… I assumed that means the following: …

Please don’t assume. Let’s work through this one step at a time.

Originally Posted by consol1

…Complete New Fuel System(pump/injectors/etc) …

Not necessarily. It depends what point you pick for your power goal.

Originally Posted by consol1

…New Single turbo/manifold/etc…

Not necessarily.

Originally Posted by consol1

…New exhaust down piping and all…

For 500rwhp+, then the oem exhaust will be a restriction. However, note that you can do about 400rwhp with the oem exhaust with no issue whatsoever.

Originally Posted by consol1

…, shoot for 4"(lose the cats) …

No – 4” is not required for 500rwhp. It’s also not required for 600rwhp. Another bad assumption on your part. I know you’re anxious to get going, but please keep in mind the Mkiv Supra Turbo has been built to pretty-much your specs (as I understand them so far) hundreds and hundreds and hundreds of times. I can get you where you want to go without any guesswork or redundant purchasing or any wasted $ in over-building certain components.

Originally Posted by consol1

…Intercooler with all piping(750 to 1000 WHP range maybe) …

What am I missing? Didn’t you say 500-600whp above? How did we suddenly get to 1000whp??????

Originally Posted by consol1

…New radiator…

Not necessarily. This depends on your application.

Originally Posted by consol1

…Bigger Brakes…

Not necessarily. This depends on your application.

Originally Posted by consol1

…Rebuild the stock auto trans…

Not necessarily. This depends on whether you pick 500rwhp or 600whp.

Originally Posted by consol1

…Hold off on cams, valve springs, guides, and other internals for now. …

Wow – man are you ever getting ahead of yourself!!!! Internals – no way – the oem internals are good to 1000hp! Why on earth would you *ever* consider replacing them? Not “for now” – never. Got it? Regarding the valve springs, it depends on your application.

Originally Posted by consol1

…Shoot for low 500 with the 91 octane…

Hmmm. Again, the Mkiv Supra Turbo’s 183ci (!!!) engine cannot run high boost on your local pitifully low 91 octane pump fuel. We need to figure out some alternatives here, unless you want your 173psi compression numbers to plummet to 120psi or less. You decide…ok? When you do, we’ll figure out how to tackle the fueling issue. Even water injection (or preferably water+meth) would go a long way towards addressing the issue. If you care to check, I bet race fuel is quite easy to come by in Las Vegas. Let me know if you need a hand with this.

Originally Posted by consol1

…and high 5 to low 6+ with race fuel…

Again, you need to pick a specific number. 595rwhp? *shrug*

Originally Posted by consol1

…and more boost in the map. …

Not sure what you mean here…the map of the ecu? We might end up using the oem ecu…so sure – it could have a larger map area than we end up using… (?) Clear up what you mean for me if possible…

Originally Posted by consol1

…And if I get addicted to this thing and want more.... then all I should have to do is get a bigger turbo and buy a race fuel farm(hehehe)…

If you think you might want more, and your budget is flexible, just pick a number – even if you think it sounds crazy. We can build to your spec. Best to get you what you want right up front, instead of rebuilding it later.

Originally Posted by consol1

…I have done meth injection before and still do on one of my 4Runners(I dropped in a 3rz with a small turbo). Not that happy with that system to tell you the truth. I fill that it is kind of a mickey mouse bandaid in opinion(not that I really have your experience in this arena) it's just more of a gut feeling. …

Don’t disagree there are cheesy meth injection systems out there. There are good ones too.

Originally Posted by consol1

…Borg Warner has a new turbo out(within in the last year and a half). I think it has a titanium fan and is suppose to spool up quicker. I am reading and hearing roomers that by 3k it has strong pull up to 5.5K Still looking into the truth about that turbo. …

Unless it’s been used on a 2jz-gte, I’d prefer you stay away from it. If your turbine wheel, compressor wheel, a/r ratios, etc. aren’t all matched to the application, a good turbo in theory might suck on an unusual application like a very high-boost potential 3L engine.

Originally Posted by consol1

…So that is my starting point. I still want to use this car to drive around town when I want too…

Ok, we’ll keep that in mind. If you pick 1000whp though (per your intercooler specs), don’t expect it to drive like a ‘benz. J

Originally Posted by consol1

…I realize that I may have to sacrifice something but I want an all around street car with some get up and freaking go!

Originally Posted by consol1

What do you think. How far off the mark am I here?

Not at all. Again, let’s take it one step at a time though (don’t get ahead of yourself).