need help making power 94tt

[pwpanas]

Originally Posted by warmkop

i bould parts for powerstations so tolerances is not a problem.How effective is cutting the standerd cams or is it better to buy cams.

In my experience, most buy aftermarket cams like these:
http://www.hksusa.com/products/?id=656&rsku=4064

To get a longer duration, don't you need *more* 'meat' on the camshaft? I believe you'd have to do more than just cutting...

[warmkop]

Thanks for the advice so far its been very helpful.
What cam wil you say is the best to use and wat can i rev the motor safely.

[pwpanas]

Originally Posted by warmkop

Thanks for the advice so far its been very helpful.
What cam wil you say is the best to use and wat can i rev the motor safely.

You're welcome.
For your application, these HKS 272 duration cams will do nicely:
2202-RT085 and 2202-RT086
(note these only work on the '93-'98 non-VVTi models)

With the oem valve springs, max 8500rpm is safe.
With dual springs and titanium retainers, 9500+rpm is easily doable.
Add shimless buckets to the setup and it should be good for 11K (no kidding - again, that's with a bone-stock oem shortblock!).

However, note that you don't really make your power with rpms alone in the 2jz-gte. The turbo is so integral to the overall performance...the turbo-driven horsepower curve will usually taper off after about 8000-9000rpms. You'll want to set things up so that your shifts maximally captialize on that horsepower curve. Use the nos as an aide to spool up the turbo quicker and you'll widen that horsepower curve even more.

[warmkop]

how good is the standard intercooler and at power should it be changed.
should i install a bigger oil cooler

[pwpanas]

Originally Posted by warmkop

how good is the standard intercooler and at power should it be changed.
should i install a bigger oil cooler

The oem intercooler is fine for many applications (eg. roadracing). It's side-mount design means that it doesn't pre-heat air going to the radiator. For 500rwhp and roadracing, it may be near optimal. For 800+rwhp and drag racing, it's probably not. Anything in the middle is probably arguable...especially if you find a way to take care of its one weakness - the plastic end tanks. At high boost and high heat, the end tanks can pop out from the metal fingers that hold them on. To solve this, you can wrap a metal cinch strap around the intercooler and end tanks to help keep things together. If you can find it, at one time GReddy made an all-metal side-mount intercooler oem replacement.

You should only install a bigger oil cooler if you're going to be roadracing at 700rwhp+, imho.

[warmkop]

peoplei n SA is advising me against ethanol is afgas just as good or not.How good is the aftermarket intake manifolds on ebay peolple also say it is crap because it gets smaller at the end and cyl 5.6 runs hotter can build my own just need spec. do i need to make my fuel lines bigger for 1200cc injectors.any advise welcome

[pwpanas]

Originally Posted by warmkop

peoplei n SA is advising me against ethanol is afgas just as good or not.How good is the aftermarket intake manifolds on ebay peolple also say it is crap because it gets smaller at the end and cyl 5.6 runs hotter can build my own just need spec. do i need to make my fuel lines bigger for 1200cc injectors.any advise welcome

Do not run aviation fuel. Race fuel (specifically for motorsports applications) is proven for high horsepower applications. E85 is okay too.

The oem plenum is what causes a lean condition in #6 for high horsepower applications. Aftermarket plenums solve this issue. That's why they were invented! However I definitely agree that you should stay away from the cheaply-constructed plenums on ebay and go with a name brand like veilside, virtual works, or sound performance.

I can't answer the question about you fuel lines because you have not told me how much fuel your engine will be consuming. For example, I could make 1200cc injectors work just fine with the stock twin turbos and the oem fuel lines. If you still have that 67mm turbo, 1200cc injectors are too big unless you're going to run E85. A 67mm turbo's fuel requirements do outstrip the oem fuel pump and lines. You need to get a complete fuel system - don't try to piecemeal one together yourself.