Gas Flowed Heads??

[RowdyBurns]

Where do you guys get your heads gas flowed?

Any recomendations? Prices?

Specifically interested in M25 and M42 heads.

Thanks,

Doug.

[fowler]

not really worth the money BMW did quite a good job from factory
M25 do you mean M20 B25

[RowdyBurns]

Doh, yes the 12v 6 pot iron block lump.

Surely that 2 valve head could do with some improvement?

Does anyone have some existing flow figures @ 10 or 28" H2o?

[nos4a2]

Not wishing to hijack the thread but I would be interested in someone who does a good job with M3 (S14) heads.

[fowler]

well from what i know which is fairly limited
the money spent buy doing the head work does not reflect well on the gains of the m20 b25
all in know alpina did some marginal head work for better flow but as previously mentioned the cost would out way the gains
INMPO i would spend the cash on re-building a good m20 B25 with marginal head skim BBTB +Cams + exhaust manifold and megasquirt and a good mapping session with some one in the know, for real gains out of the M20 B25

[reggid]

A previous thread on M20 heads with flow numbers

http://www.e30zone.net/modules.php?name ... 64&start=0

[fowler]

good find reggid that was the thread i was looking for but work computer is so slow