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G-MAN
11-19-2002 16:01:49
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Re: G-MAN in reply to 4020, 11-19-2002 15:19:30
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There is one particular part number that is used on a whole slew of various Deere engines. Part #RE58516 is used on 9500/9600 combines, 4650 and 4850 tractors, 55 and 60 series tractors and several other units, including cotton pickers and forage harvesters. That looks to be Deere's jack of all trades head for 6076 engines, and would likely be the one to look for. The 6081 engine is used in later 8000 series tractors, 8000 Ten series tractors, and a whole bunch of other machines. The problem with finding one out of an 8000 series tractors is that the oil pan is the front frame on those units, and the engine sits on top. Blocks for that application use a smaller number of larger size pan bolts than say your ordinary 4955 engine, which would make it hard to bolt up to a 4230 without some extensive mods. They also have a very different timing gear train up front, and have a couple of different styles of water pump. They really are application specific for the 8000 series, but I have seen 6081 power units with a regular oil pan on them, but once again it won't bolt up to your clutch housing. The best option might be sticking a 6081 crank in a 6076 block, if it will fit. I believe the deck height of the block is still the same, so you'd have to have the 8.1 pistons as well, to avoid putting the pistons above the tops of the cylinders at TDC. The 6081s are very good engines. We have a few early 8400s running around that are turning 300 horsepower, and have in excess of 5000 hours on them, so they'll get it done. Those engines are also fitted with electronically controlled pumps to limit fuel delivery, so a mechanical P-series pump might be just the ticket to really wake one up for a pulling tractor, providing you can get the engine installed. I don't know much about the big boys in tractor pulling, so there may be people out there that know exactly what you need. What I've posted is just what I've observed and been able to research in a few minutes of poking around in the parts program.
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