Originally posted by Shore 96 Teg
ok then would a b16 head on a b20 block produce higher revs???
thats what i heard from this guy I work with. i was just kinda applying what he told me about a b16/b20 to a b18/b20.
Hold on a minute... :eh:
1) The head will affect high rpm efficiency, not physically limit the motor from revving.
2) The B18B or B20B/Z internals are kept to a lower rev limit, by the ECU for a good reason.
3) My honest opinion on CRV / VTECs and other Frankensteins is that you're better off buying a B18C and Sleeving it out to 2.0L using the Darton or AEBS sleeve replacements.
Then:
a) add high-c/r forged pistons and rods for an NA build up.
or.
b) low-c/r forged pistons and rods for turbo applications.
Basically, if you want to have a VTEC B that is as reliable as a stock B18C5 (for example), then it is best to start out with a VTEC motor, rather than do things cheaply.
A powerful, reliable small displacement motor costs serious money. It's one of the universal truths in auto performance.