Originally Posted by Lee_R21Turbo
I'm now on the lookout for a .63 housing, I dont mind the extra lag tbh as I'll benefit from it pulling harder higher up the rev range!
How high do you currently rev to?
From what I've read the J7R-752 suffers from oil breakdown problems on the crank around 6200rpm upwards this was apparently documented by Renault.
I've not seen or got the documentation to prove so but it certainly seems to make sense.
The europacup revved to was 6300rpm and for the superproduction the where they revved to 8000rpm they ran a dry sump system and different crankshaft.