Low compression

[Malcolm Towrie]

Thanks for the good info, Lynn. I'll check out what pistons and cylinder heads I have.

But I found something else interesting. I only managed to get one exhaust valve/guide assembly out. (The others are stuck in the block, apparently a common problem with flathead Fords.) Looking at the seats with the valves fully open, I flagged this exhaust valve as OK. (It's on one of the "good" cylinders.) But check out the photo taken after I cleaned it up. It's far from OK. It's blackened and pitted. Compare it to the photo of a good intake valve face. I'm beginning to think the whole low compression issue is down to bad exhaust valves.

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DSC00590.JPG

If penetrant doesnt loosen up the stuck valves, I'll have to make up the c-clamp tool to get them out.

Malcolm