I have been running on this little tiny IHI T-25 turbo on my B16a for about long enouph and I ready to step up. What I'm tring to figure out is what trim will pull all the way to red line (8000 rpm) without dropping off. I just don't want to go too big. I have seen that the t-3 super 60 (.48/.60 or so) seems to be a good turbo for my application. What do you guys think will give me the quickest spool without running out on the top end? (oh, by the way, any body have any tips on how to read casting numbers to see what wheel/housung the any turbo is? while you're at it, is there any way to read the CFMs too?)

 

I'm using a T3/T04E 50 trim .48 A/R on a friends 1st gen B16a. Works extremely well, and pulls all the way to redline. You can pick one up at cheapturbo.com for about $550.

 

Cool..thanks man I was wondering if a 50 trim was big enouph to pull all the way. There are quite a few of these on e-bay too..

 

Well if your worried about the turbo running out of breath in the future, pick up a T3/T04E 60 trim with a .63 A/R. It flows a bit more then the 50 trim. 50 trim flows 46lbs/min while the 60 flows 53lbs/min.