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advice (picts inside) bottom end/head - also is the head ported?
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17-05-2011, 09:34 AM
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muz
Wye Valley Hardcore
Join Date: May 2005
Location: Hereford/Colchester
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Valve sizes? Standard valves should be 42mm inlet 37mm exhaust. I think most heads can only accept a 43mm inlet 'oversize' valve without a crosshatch head but keep the same sized exhaust valves.
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