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FE-FC Holden Discussion Forum > Technical Board > General Technical (Moderators: RET, Glenn 'Stinky' Stankevicius, gp) > Combustion chamber size versus bore diameter
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Author Topic: Combustion chamber size versus bore diameter  (Read 2119 times)
CarlFC Ute
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Carl Mitchell
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« on: August 08, 2016, 02:28:54 PM »
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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.
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CarlFC Ute
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« Reply #1 on: August 08, 2016, 06:23:43 PM »
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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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