Cylinder block spacer plate

[Chris KC]

Certainly if you can get laser cutting done easily it will do a neater job than drilling and filing. Note that the spacer is not usually the same shape as a base gasket, it has slots for the rods to pass through which are wider than the bores and which effectively replace the tin oil baffles. Also - importantly - in this conversion the cam centre bush is usually drip fed oil from the valve chest through a small hole between the valve guides, take care not to block it off with the spacer or any shim/ gasket; it's easily missed. You may find you also have an extra base stud.

My engines run on over-bored Austin pumps without problems - been over thirty years now. These engines don't seem to need as much pressure / supply as front-fed cranks.


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