Well after concidering everything and everyones input , I got my local supplier to get in touch with an Australian GARRETT turbo supplier to find out what they recommend for my setup ,( I have always been a big fan of the Aussies , almost evreyone down there seems to have a high power blindingly fast 13B ) , they said TA45 was the way to go and they would put it together to suit my engine configuration , what ya think guys ?.

 

Go for it !

I got a T51, that would suit your application very well

If you go on the Garrett web site you will see the specs for the T51, it is a bit easier to fit than some of the other versions cause the compressor cover is a bit smaller (looks very similar to HKS T51R).

Can't wait to see it.

How much power are you going for.

If you want to see specs of mine do a search for T51 turbo's I have some pics posted in one of the threads.

 

Nice turbo, pretty good size, what are you looking for power wise.

 

Sounds good. What spec TA45 are you going for?

 

Is this turbo very similar to the HKS T04R?
I've heard from some that the t04r is basically a ta45 sold as an HKS turbo.

 

T51's are a differnet "family" of turbo and have much larger parts in all areas.

wheels
bearings
housings
everything pretty much

Better for reliability and better matching available in terms of exhaust turbine flow capacity, which allows you to run much less bypass (wg) and hence ALOT less backpressure = more power & more reliability, but less turbine responce.

catch 22 turbocars, you don't get nuthin for free

You can go here to get a brief summary of sizes for various "families" of turbos

http://www.moreboost.org/turbos.htm

 

Power wise ???...... lets see I started out with a street port and wanting a turbo to support 400 whp , I ended up with a half bridge ported motor , the primarys ported out to the max. and a T70 turbo shooting for 25psi with water/ methanol injection .
POWER ?? ........too much is just enough !!!!!.

 

As for the specs- wheel sizes , turbine and compressor a/r 's I dont have a clue , I was hoping you guys could suggest something so that I can at least sound like I know what I need !!!.

 

If you are going drag racing and have a clutch assisted box, I do not recommend a TA turbo at all. My shifts were quick when I was racing and I was seeing as much as a 14psi drop on gear changes! Not good for trying to run numbers...

I would suggest a Rotorworx T04E/66 (Click
here for details) as they make BULK power and have much better boost response than the TA. There is a 1st gen here with one of those turbos that has run a best of 145mph!

Just my 2c worth, from experience

 

partial Bridge will spool a t51 NO PROBLEM !

For your flowing engine and rev range to 8.5 or 9.0k with a divided housing and manifold you will have NO ISSUES you will have solid no lag responce from 5.5k to 9k.

TO4 family turbine will choke your engine, steer clear of it. Ask Crispeed for specific set up examples that will related to your engine porting specification. AJC's porting was very mild stock primaries, stock secondaries (timing wise) just cleaned up from what I understand....... there are MASSIVE differences in flow rates between full on street ported engines let alone partial brides and greater + his manifold was not divided from memory ? I could be wrong on this point ? But this plays a big big part too. If you run a good divided header and of a tuned length it will be a night and day difference in responce......"lag" will be non existant in the rev ranges mentioned above, especialy ona motor like yours !

You will regret getting the "smaller" turbo with your set up.

The TO4 sized turbine in a P trim and 1.32 was TOO restrictive for my street port above 7.5k rpm ! Just from my experience

P.S. Not a "shot" Steve Just Marcell's set up is much higher flowing (Ve) than your engine, I estimate around +30% or greater @ mid to high rpms....... It would spool a wind mill That is ALOT of extra air + if you consider it will have an extended range over a stock or near stock intake/exhaust timing engine then if will flow a **** load more air, it's in a different league in terms of matching a turbine to his mill compared to yours.

 

soul assain had lots of problems (popped a few engines) running a TO4R @ 520rwhp (dynapack) (similar to T66 variation you describe), I believe it was to do with having far to high a exhaust manifold pressure to intake pressure relationship.

Partial Bridges flow alot more and the turbine section simply cannot flow what one of these motors generate without shitting them selves, even if you bypass alot of gas the exhaust manifold pressure still stays very high to compensate for the lower flow through the turbine so you still have VERY BIG header pressure which kills ported engines.

TO4 turbo's are far too small for your engine Marcell once you start wanting to make over 500+rwhp (dynojet talk) a stock port or even mild street port will not suffer as much running excessive exhaust manifold to intake manifold pressures.

don't want to see you pop your motor, I hope you go for a decent size turbo, you will regret getting a small one

 

I think I will go with the larger unit , my exhaust manifold is made with 2" diameter runners and is completely devided , thats why I am using dual wastegates , as fo being tuned ....I dont know but the T70 was spinning hell hard at idle speed (15oorpm) and generating boost pressure at that engine speed, There was a 1" hole in my GREDDY intake elbow (long story) and I would still see 8psi (wastegate spring pressure) before the rev limiter cut in at 5500rpm ,after patching the hole the boost response was a lot faster i actually had to get it tuned a bit to be on the safe side , so I guess if the T70 was that responsive the TA45 wont be so bad.I also noticed that almost everyone "down under" is using a TA45 1.

 

At no point in my post did I mention lag. Re-read my post

My manifold was divided the whole way and had the same length runners and was made with 1 7/8 inch ID stainless steel.

The RotorWorx car made 540rwhp on a dyno dynamics dyno, so thats over 600hp dynojet talk.

 

Well we went ahed and ordered the turbo last night (Sunday because wea are one day behind Australia) , The guy down there recommended a TA51 compressor , 76mm wheel , 0.74 a/r on the housing , 5" suction and 3" discharge . The turbine side is using a 70mm exducer and I think a 74mm inducer in a 1.22a/r exhaust housing. it should get here at the end of the week ,I will keep you guys posted.

 

Be prepared to be shocked when it turns up

It is a BIG turbo you have ordered

I just upgraded my exhaust housing to a 1.22 as well, my exhaust wheel is a bit larger. You will be happy with it, if you can fit it in the engine bay

 

HELL YEAH!!!

 

PICS please

 

i want this one

 

If I have to re-do my exhaust manifold to make it fit I will !!!!!, but I have no doubt that it will .When I made the manifold I extended it forward so the compressor housing sits about 4-5" directly over the battery support bar (in the FD).
As for pictures, I am working on posting some , my computer isnt communicating with the damn scanner.

 

I just got the Garett Ta 45 Q trim installed on my car and im picking it up tmoz. Its 76mm compressor and Exhaust 1.32AR. They said this setup makes around 580-600rwhp @ 26-28psi on C16. On street gas it reaches 16psi by 4600-5000rpm, on C16 it reaches 26-28psi by 3500rpm.

 

i may be an idiot, but how will the race gas cause it to spool up that much faster?

 

I'm guessing that he's running more ignition advance on race gas.

 

Oh yeah, for amusment's sake, what's it take to keep up with a PPort motor, turbowise? Twin T3/T4s, twin GT/whatevers, T51 or somesuch? Just curious. Don't have anything in plan that would require *THAT* kind of oomph... not yet anyway.

 

How much $$ are such monsters running for?

 

About $2200AU.