My beloved 1994 6.5 Turbodiesel at nearly 400K spun a main bearing (I was told). horrible noise. Sitting in drydock several years. A friend will give me a 6.2 non turbo diesel . Might the crankshafts be interchangeable so I can save my otherwise great 6.5 ?
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bad 6.5 crank and 6.2 donor?
- Thread starter hr47cars
- Start date
dieselolds
Well-Known Member
If that 6.2 has a 599 block then that crankshaft will be the same as what your 6.5 has because of the 1 piece seal design.A scat crank will work also if you go that route.
Will L.
Well-Known Member
At the 400k mark- just a crank is unusual-It probably needs a full rebuild and possibly will cost more to be rebuilt than replaced. I suggest taking a little time to learn about things to do while apart. Gapless rings, roller rockers, getting away from original valve springs for some strong enough to resist floating when boosted, etc.
Some 6.2 used 1 piece and others used 2 piece rear main seal. The 6.5 use 1 piece as mentioned above.
Some 6.2 used 1 piece and others used 2 piece rear main seal. The 6.5 use 1 piece as mentioned above.
ak diesel driver
6.5 driver
IIRC you can machine the 6.5 crank to fit the 2 piece block but not the other way
Thanks for the prompt reply. Will ask my mechanic about his crank. Appreciate your input!
Likely correct. The current engine was a replacement of the first which was incorrectly diagnosed as being a bad engine- lots of issues with the amazing factory exhaust pipe being flattened at the rear of the engine, poor factory water pumps, etc- got this current one from the former diesel rebuilder in Georgia- so has only 300K miles or so on it, but even though I babied it, likely lots of wear with so many miles. That 2 wheel drive truck-now out of commission- was so much more comfortable riding than my replacement 1996 4 wheel drive version- and also had tall rear end gearing- nicer for highway driving. Rustfree Colorado king cab model, but not a huge demand for a 30 year old truck, I suppose. Some advise putting it on Craigslist and sell to someone wanting to stick a 350 engine in it and use it for a utility vehicle, but unclear on how our picky Colorado e testing would work in this regards . I truly appreciate and admire this website and input from others who aren't part of the 'throw away society' regarding their beloved trucks. Harland
Paveltolz
Доверяй, но проверяй
True. My block is a 6.2 and the Scat crank was turned down to accept the two piece rear main seal.
FWIW, the oil pans for one piece and two piece rear mains are different too.