Diff bolt circle diameter

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Jul 15, 2015 | 12:04 PM

WestfieldMX5

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Diff bolt circle diameter

Anybody who knows the diamater of the bolt circle on a 1.8 diff? (The red circle)
Surely someone has an open case lying around and wouldn't mind measuring

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Jul 16, 2015 | 06:37 PM

WestfieldMX5

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anyone, anyone, Bueller?

Jul 16, 2015 | 07:00 PM

rleete

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Engineer's answer: exactly double the radius.

*sorry, I couldn't resist*

Jul 17, 2015 | 08:28 AM

WestfieldMX5

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mmm, now if you could tell me the radius, I'd be happy too. Heck, for all I care, you tell me the circumference.

Jul 17, 2015 | 09:26 AM

gjsmith66

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Looks like 8 inches exact...

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Jul 17, 2015 | 09:40 AM

gjsmith66

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Using a more accurate instrument, it is actually closer to 7 and 15/16 inches.

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Jul 17, 2015 | 03:18 PM

Savington

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$10 says it's called out as 200mm center-center.

Jul 17, 2015 | 08:10 PM

gjsmith66

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Jul 18, 2015 | 06:35 PM

WestfieldMX5

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Thanks a bunch Gary!! really helpful. By measuring the distance between 2 bolts (77mm) I calculated the diameter to be 201.2mm
I figured it was probably 200mm since Jap stuff is metric, which means that the distance between 2 bolts is really 76.5mm, not 77mm

Last edited by WestfieldMX5; Jul 18, 2015 at 07:29 PM.