Ford 5000 Piston

Bruce Nelson · Posted: Wed Jan 02, 2013 4:01 pm Post subject: Ford 5000 Piston

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 · Posted: Wed Jan 02, 2013 6:17 pm Post subject: Re: Ford 5000 Piston

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 · Posted: Thu Jan 03, 2013 7:26 am Post subject: Re: Ford 5000 Piston

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 · Regular Joined: 25 Jun 2010 Posts: 40 Report to Moderator

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 · Posted: Thu Jan 03, 2013 6:24 pm Post subject: Re: Ford 5000 Piston

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

Dave

Bern · Posted: Thu Jan 03, 2013 9:26 pm Post subject: Re: Ford 5000 Piston

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.

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