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just for a quick example. we have a 4-53 detroit diesel in the lab here that we do firing compression with. these engines have been beat on and tooled on by kids that have never turned a wrench before. they all run around 600# firing compression.
and a 4-53 detroit is very similar in bore/stroke to a 444e
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I am sure the detroit has a different compression ratio so not real sure that you're talking apples to apples.
I've always heard anywhere around 400 psi is pretty average on the 7.3's
On edit be careful about doing wet compression tests or you might be digging pieces of the compression guage out from the back of your eye sockets.
just for a quick example. we have a 4-53 detroit diesel in the lab here that we do firing compression with. these engines have been beat on and tooled on by kids that have never turned a wrench before. they all run around 600# firing compression.
and a 4-53 detroit is very similar in bore/stroke to a 444e
[/ QUOTE ]
I am sure the detroit has a different compression ratio so not real sure that you're talking apples to apples.
I've always heard anywhere around 400 psi is pretty average on the 7.3's
On edit be careful about doing wet compression tests or you might be digging pieces of the compression guage out from the back of your eye sockets.
