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#1
August 19th 2014, 21:34
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Wow! That "B" head has tiny chambers! Have you called CB and asked them? The 90.5 and 92 should be the same O.D.?
__________________
1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans  1962 SC 1776cc SP 944NA brakes, 993 wheels VKG 
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#2
August 20th 2014, 07:44
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The "B" is the earlier 044 head. When I ordered those heads I orded match ported intakes. The "D" version heads do have larger combustion chambers, the head shown was the head the was repaired, due to a bent valve.
However I did not open up the combustion chambers to that extent. Also the intake runners could not be opened up, without massive welding. Im not sure what the current version looks like, but side by side will be obvious.    
Last edited by effvee; August 20th 2014 at 10:39.
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#3
August 20th 2014, 21:47
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After looking at the heads again the "D" version is cut for 94mm. You can tell by the head stud holes that open up into the cylinder area.
__________________
1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans 1962 SC 1776cc SP 944NA brakes, 993 wheels VKG
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