engine block resurfacing question

[makaveli200369]

Hi all,

I had to have my engine block decked .004" to get it nice and flat. This is a very small amount. I've read in a few places guys decked their pistons as well to prevent piston/valve interference however I do not know how much they had the block decked. I can't find a for sure anwer if you need to do this. Is this stated in the ford engine repair manual?

Thanks

[top dollar]

dont know . but i had .004 off my heads when i did my build so that would be the same just from the other side no clearance issues with them here . heard of someone taking .009 off a set of heads and being ok but everyone says .005 should be max . dont know what the compression change would be though if any....

[makaveli200369]

Hi thanks for the quick response. In my case I'm talking about the block deck. Supposedly if you deck the block past a certain amount the piston top will protrude just slightly higher causing issues. This would require piston top cutting which I do not want to do I want as much meat on it as possible.

[top dollar]

your heads are flat on the bottom ( the valves when closed are flush with the deck of the heads ) so what i am saying is off the heads or off the block its all the same . when you have the heads off you can see that the top roughly 1\2 inch of the cylinder walls have carbon build up where the piston does not ride the cylinder wall i.e. valve clearance... you will be fine . with .004 off your block.

[makaveli200369]

Hah you are right. I forgot about that when I took the pistons out I had to use a ridge reemer to remove that. So what are all these other people talking about cutting the pistons tops?

[top dollar]

the only time i heard of someone getting them cut is with a full build (radical cam ) and new high per. valve system . or new crank . these could easily bring valve clearance into the equation .

[makaveli200369]

Makes me feel a lot better now