175 valve sizes

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ranton_rambler
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Joined: Sun Jun 04, 2017 11:33 am
Location: Stafford UK

175 valve sizes

Postby ranton_rambler » Sat Jul 11, 2026 10:58 am

Does anyone know the valve diameters for the various 175 motors?
I have a 175TS and gave up on my "sports" camshaft as I think the valves are too small to get the proper benefit from it.

I have seen a head advertised as a 175 Sport head, with valves 31.5mm exhaust and 34mm inlet.
I don't seem to have a note of mine, and the various books I have don't tell me either.

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