retro fitting a DT407 in place of a D8800

Tink Sanders · Oct 14, 2011

I am looking for information to help me retrofit a DT407 into a crusher that had a caterpillar D8800. The DT407 came out of my 1970 Gallion roadgrader. I have to bolt it up to a bellhousing and clutch set up already on the crusher, i have no idea what the bell housings are and what to do for a flywheel. Could use some help

Janicholson · Oct 14, 2011

Best help would be to get stout tagboard and make a pattern of the edges and holes in the mounting plates. Find the center of the crank and measure it exactly on the paper. Do the same for the plate on the machine. Measure the shaft sizes and couplings to attach the FW of the engine to the crusher clutch (this assumes it is a stand alone clutch)
Make a cheap aluminum plate (16ga) with the holes as needed. Fit it together and check alignment. then have a 1/2" plate plasma cut to make the real thing.
If this seems beyond the possible, get some help from hot rodders and others that mate engines of different breeds. Jim

sixtyninegmc · Oct 14, 2011

Look up SAE bellhousing patterns on the net, and use that info to measure both patterns you are dealing with, they will likely both be SAE, though possibly different sizes. Most industrial applications are standardized which makes swapping fairly straightforward.

Billy NY · Oct 15, 2011

I'm familiar with the D8800, but in a D7, they are a slow turning old technology engine, I'd want to be sure the repower meets the criteria of the crusher. I know a sawyer who has the 6 cyl version, D13000, (D8) in a sawmill, that came out of a crane, mill needs an engine like this old tech slow turning diesel.

Over the years I've seen quite a few of these 8800's, 13000's from stationary units, like compressors, cranes, etc. up for sale. Stationary ones may have different arrangements, settings, etc. external to the engine, different than ones from tractors, but both can be set up the same, just if you take one from a tractor, you need to set it up for stationary work. Just in case the repower does not work out, ACMOC, ACME forums may help you source another D8800 or rebuild yours, the heads are the hardest component to find I think, if yours are cracked and not repairable.

Tink Sanders · Oct 15, 2011

thanks Jim that gives me more options.

retro fitting a DT407 in place of a D8800

Tink Sanders

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Janicholson

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Billy NY

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Tink Sanders

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