[tonysoprano]

Originally Posted by SteveN

Rod Bell has built OSG RB30s at 7.5:1 for customers who wanted a reliable 700bhp on pump gas, has he not?

Granted, that dont stop the crank pulley flying off mid journey, but it stops melted pistons.

Id not go to 7.5:1 unless i was running coming on for 2bar held on pump gas tho, and the 7:1 thats been mentioned sounds like "2.5bar held, on pump gas and mild duration cams" style compression to me.

Shocked if lower comp affects boost threshold much tho, certainly not as much as big ports and lairy cams do (which also compounds any bad effects lowering comp would).
Certainly would lose some off boost power, but not actual boost threshold really, unless it was mapped for the higher compression still.

Im bored of RBs anyhow, bloody things

Your only just out of nappies.

Lol

Tony