Square 4 heads

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mike.loehr
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Square 4 heads

Post by mike.loehr »

I have several Mll square 4 heads,Question: one set has a bevel cut a along part of the flat mating block surface of all 4 combustion chambers and other sets do not have that bevel cut.Have seen pictures of the bevel cut heads also.Is this factory or modification.
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Bob.Murphy
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Re: Square 4 heads

Post by Bob.Murphy »

Could you post a picture or two please??

Just so we can be clear about the issue.

Bob.
My avatar shows the late Len Rich in 1970 with the bike I now have - a 1958 Ariel VH
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mike.loehr
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Re: Square 4 heads

Post by mike.loehr »

Have seen several other photos of these heads like mine
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Roger Gwynn
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Re: Square 4 heads

Post by Roger Gwynn »

I suspect that someone has fitted high comp pistons at some point and this is to clear the piston. I have just done the same on my Traction Avant (its a car)
Roger Gwynn, Membership Secretary, curator of the Machine Register and the works drawings. Director of Draganfly Motorcycles, Craven Equipment and Supreme Motorcycles mostly retired.
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