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Author: Subject: Flywheel Bolt Circle Diameters
cs3tcr

posted on 26/6/12 at 04:29 PM Reply With Quote
Flywheel Bolt Circle Diameters

I'm hoping someone can help, i'm in the process of converting a Coventry Climax FWM to automotive use, and am trying to find a suitable flywheel. I know i can have one custom made, but i'm trying to possibly find something that already exists. The Climax crank has a 6 bolt pattern on a 2 3/8" PCD, the bolts are 5/16" UNF but the holes in the existing firepump flywheel measure 0.320" in diameter. Can anyone help?


Thanks,
Rod

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owelly

posted on 26/6/12 at 04:43 PM Reply With Quote
Hows about the Hillman Imp? Does it not share the same engine?





http://www.ppcmag.co.uk

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cs3tcr

posted on 26/6/12 at 05:08 PM Reply With Quote
The engine is similar in construction and layout, but from what i've found so far, they share very little in terms of parts. I had a look online in regards to the Imp flywheels and they appear to be a 4 bolt flywheel for the early ones, and a 5 bolt for the later ones.

Here's a pick of the FWM:

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