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Combustion chamber size versus bore diameter

Started by CarlFC Ute, August 08, 2016, 02:28:54 PM

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CarlFC Ute

August 08, 2016, 02:28:54 PM
Can anyone tell me if there is a reason why the standard combustion chamber on 132 and 138 is wider than the bore diameter. Seems a little odd.

CarlFC Ute

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August 08, 2016, 06:23:43 PM
I just did a quick measure job and it seems that the 138 heads are around 3.2" at widest point of chamber and 132 measures 3.1 to 3.15". I have a few heads and they look to be completely standard, certainly not showing any signs of polishing or chamber mods.
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