Ford 5000 Piston

Bruce Nelson · Jan 2, 2013

I got some new pistons for a Ford 5000 diesel block that I am boring. The new pistons have a smaller diameter and deeper combustion chamber than the originals. Will these work?

Bern · Jan 2, 2013

If the overall volume is the same, then yes. The most important thing is deck height, which is the amount the piston protrudes above the top of the block at TDC. Anything between 0 and .010" above will use a thin head gasket, and if you're between .010" and .023" above, you want the thick gasket. If your piston does not come up to the top of the block at TDC, you have bigger issues.

Bruce Nelson · Jan 3, 2013

What should a thick or a thin gasket measure? I have a gasket set, not sure if it came with a thick or thin. Thanks for the help.

SteveGr · Jan 3, 2013

Did you get the right pistons for there are 2 different sizes. One was for a 5.2 bore and the later were for a 5.4 bore. The smaller was for the earlier engine and the larger for the later one.

Shetland Sheepdog · Jan 3, 2013

:? Don'tcha mean 4.2 bore & 4.4 bore? As in the 233 engine & 256 engine? Just wondering! :wink:
Dave

Bern · Jan 3, 2013

I want to say that a thick gasket measures around .060" compressed (i.e. head torqued down), and the thin is around.040". These are approximate numbers.

Ford 5000 Piston

Bruce Nelson

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Bern

Well-known Member

Bruce Nelson

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SteveGr

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Shetland Sheepdog

Well-known Member

Bern

Well-known Member

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