Turbo

[Tarran]

Hi

AR42 Garret Turbo any good? What sort of power output does it have?

 

[rs250nut]

You need to be more specific, what a/r is that exhaust or compressor?

 

[ecksjay]

as above, that could be any garrett turbo. if it's common, it's most likely a t25 or t28. from something like a s13, s14, saab/volvo etc.

on an ek9 i would probably be looking at a t25, t25g or a t28. all are cheap and easy to replace. T28R's are great but far more expensive, if they do go pop then it'll cost alot more to replace.

 

[Rich777]

I'd go bigger than that. T3 at least...

 

[stoo.c]

the 'T' size is largely irrelevant and simply applies to the flange size where the turbo joins the manifold. You cant make any informed decisions based on this alone. You need to know the a/r's of the turbine and compressor housings.

Saying T3 at least is meaningless - you can get a T28 that will be way too big for a stock b16b likewise you can get a T3 which is tiny.

I run a large T28 on a b18 and can produce upwards of 300bhp. The size of turbo will determine how quickly it spools up, the kind of heat it generates, the point it which it chokes etc. There is alot of research needed in order to choose the perfect turbo for a specific application.

 

[Butterz]

Typical rule of thumb to follow:

Smaller turbo = Faster spool time & lower peak power output.
Bigger turbo = Slower spool time & higher peak power output.

The idea is to find what your goals are and build your setup to do what you want it to. My setup for example has a fairly small turbo because my horsepower goals dont really exceed 250whp, and I just want something to zip around town with. My primary goal is to build boost quickly at lower RPM.

 

[Rich777]

the 'T' size is largely irrelevant and simply applies to the flange size where the turbo joins the manifold. You cant make any informed decisions based on this alone. You need to know the a/r's of the turbine and compressor housings.

Saying T3 at least is meaningless - you can get a T28 that will be way too big for a stock b16b likewise you can get a T3 which is tiny.

I run a large T28 on a b18 and can produce upwards of 300bhp. The size of turbo will determine how quickly it spools up, the kind of heat it generates, the point it which it chokes etc. There is alot of research needed in order to choose the perfect turbo for a specific application.

I was more referring to your most common "T3" sized turbo's that people tend to use on the B series. But yes, you do have a good point.