G900 451 diesel

g707 · Nov 21, 2015

needing to bore G900 blocks. I have read a few old post saying you could bore 451 blocks to accept standard 504 diesel pistons. has any one here done this. It seems to me that you would be taking a lot out of the cylinder walls. and would the piston pin be the same size.

fastfarmall · Nov 22, 2015

Do u know how hard that block is going to bore, pretty hard !!!

Polardiesel · Nov 22, 2015

You can do it, .040" per cut. It is alot of material.

Joe Pro · Nov 24, 2015

Very commonly done.

G900 O/S pistons are a thing of the past.

Put G1000 std pistons in it. Pins are the same etc. No fuel pump modifications needed.

g707 · Nov 24, 2015

Thank you that is what I wanted to here. I will have to see what the machine work will coast. I am sure it will take a little more work to take that much out of the blocks

Alan K · Nov 24, 2015

Joe, was curious, I am betting blocks from a 504 don't fit on a 451 crankcase?

Joe Pro · Nov 24, 2015

(reply to post at 22:08:11 11/24/15)

Alan, yes they will. It's about 6 one way half a dozen the other. The money you'd spend on buying 504 blocks and checked over would be more then having a good set of 451 blocks bored.

I put probably the last set of G900 oversized pistons on the planet in my last overhaul. Next time Wendell Everett has very nice G1000 pistons and that's what I will use. Going to 504 also increases cylinder head availibilty by about 100,000 times!

G900 451 diesel

g707

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fastfarmall

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Polardiesel

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Joe Pro

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g707

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Alan K

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Joe Pro

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