I don't think a cam every suffers from an engine with too much compression
but radical cams suffer if they have too little compression. Surprised at
what Elgin said.
You've posted casting numbers for the blocks - do they have engine numbers
on them? 12G 1279 is not a reference number I'm aware of for a block.
Regards
Weslake-Monza 1330
In a message dated 12/01/2010 19:52:10 GMT Standard Time,
mdrowe@optonline.net writes:
The other is in good condition but apparently older (flat surface, Vizard
p169) with casting number 12G 1316, which I have not yet been able to find
described anywhere. It has much larger valves and has been shaved roughly
0.068". Dema Elgin says my cam (one step above Cooper S) should not use a
compression ratio greater than 9:1, so it is possible that this head is
shaved too much.
And I have two blocks, both reasonably clean. Both are 12G 1279 with
miscellaneous other numbers (2 155 103MD, 1 184 10L), the meaning of which I
have not yet found. They do not look different to my inexperienced eye.
Any thoughts on the relative merits of any of these pieces to be modified
as necessary for a "medium" level of upgrade?
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