944 heads on 16-valve 928s?
07-10-2007, 10:53 PM
#31
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Originally Posted by DK
Measure the in/exh valve stem center-to-center distance on one chamber - for both 928 and 944 heads.
07-11-2007, 03:58 AM
#32
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Originally Posted by Formula94lt1
I take it S3 heads are the 85-86 32v heads, so I guess s4 and up blocks and heads are specific to their own? Are those more similar to the 968 heads?
07-11-2007, 01:05 PM
#33
By Matt
I would like more info from Marc, I believe that there is a real problem running 944 heads on a 928, the reason is the valve spacing. If the valves are spaced differently you need a cam that has the same different spacing too. Well that is my opinion anyway. Maybe there is something I am missing? If Devek were running special cams that would explain it. Also I am using a 2.10" valve, how much bigger do you want to use?
Greg
IIRC, this was mentioned in one of Greg Gray's recent threads as being different. I think 944 valves are farther apart which allows bigger valves in big bore engines.
Greg
12-20-2012, 01:09 PM
#34
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According to this, a 928 S4 head (3L 32V) can fit a 2.5L block ! if only we open the water hole on the side of the head ?
