Ok, I need to make a decision.. I'm shooting for the 400hp mark. I have a 91hb, sleeved 8:1 CR built B16a, t3/t04e turbo.

Should I sell my full size griffen radiator for a half size and an equal length manifold? or use the full size rad. and a log manifold (probably inlinepro or full race)? Or fially use the drag manifold I have (buit for a 5 bolt turbo) and toss the griffen radiator for a half size?

I want to do this right, but I'd rather not spend the extra money if it's not necessary..

Thanks, any input will be greatly appriciated

 

can't you get a eg rad that although is half wide, is twice thick (i believe) so there's no cooling compromise. those lovefab manifolds are .

 

ttt

 

Go with the half width radiator and run an equal length manifold. One of the guys from full race posted a dyno comparison between an equal length manifold and a log style manifold over in the fi forum a while ago. It was pretty interesting to see the results.

https://honda-tech.com/zerothread?id=925312