Originally Posted by Mike Rainbird
Jim,
A roller bearing core will make no difference what-so-ever on spool-up time on your turbo. To get this reduced, you would need to switch to a more modern desing turbo OR have the cams / head / c/r matched to suit.
I said that the other day on a almost identical post, and nobody took any fookin notice.
Being rollerbearing means fuck all.
RS500 style T4s are laggy and shit (relativley compared to newer turbos anyhow) cause they old technology bollocks.
Modern turbos of the same sorta size/powerhandling are far less laggy.
And its feck all to do with roller bastid bearings
Id much rather have a T4 than a T34 tho...