Can one of you lot give me a run down on what Turbos imports have.

My last scoby was a early WRX which had a TD05. It was more laggy but I liked the kick it had (coupled with other mods)

I am begining to look for an STi 4/5. I am under the impression that later cars as a rule had the smaller TD04 Turbo. What turbo do these Sti's have on them?

I really want a car with a TD05 again. Am I being a pratt? Does it really make a huge difference?

Thanks
Steve

 

IIRC it goes like this:

STi 1/2 TD05
STi 3 VF23
STi 4 VF24
STi 5/6/P1 VF28

Some WRX classics have the VF22, some have VF29, some have TD05, depends on year, not really up on them.

 

The STI V4 has a VF24 and the STI V5 has a VF28. Both these turbos are similar.

Cheers,

George.

 

Ah John! Cross posted.

 

Which turbo does the MY99uk have please??? (possibly lokking at an upgrade any ideas??

 

MY99 is a TD04

 

same as MY00... i'm considering an ugrade to a TD05 one day in the future...

 

Cheers for that!

 

Any body know how much boost you can push through a TD04 before it complains??

 

Probably around 280BHP...correct me if I'm wrong guys.

 

Thats enough to be going on with, would that be at around 16 psi?

 

Personally I woudn't push a TD04 past about 1.2 bar.

I ran mine briefly at 1.3bar but it's working its nuts off at that and will be putting a fair old amount of heat into your inlet charge which is tempting det really.

At 1.3 I WAS running octane booster which will reduce the det risk somewhat but even at 1.2 bar I'd definately be using it too, especially in the warmer weather.

Cheers

Rich

[Edited by RICH WILD - 7/29/2003 4:22:03 PM]

 

Depending on the dyno you'll probably have between 255 and 285 BHP on a TD04 at 6000 RPM at 14 PSI. Midrange boost will affect the torque not the power, but most people quote midrange boost as though it impacts on the power figure. You can run a pretty healthy midrange boost hit if you taper it off quickly (ie by 4500 RPM). It can do 22 PSI at 72% compressor efficiency according to the flow map although there is no turbine data. Saw one on the dyno running 25 PSI and it did impressive torque... for a while It will not last as long, and I limit myself to 18 PSI generally.