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Killing NHC 250s -what we have learned killing 3 of them.
Watching the 2 gauge videos explains it alot. Cruising along at about 1500rpm and 1150F ish on the EGT's then it downshifts, jumping up to 2000rpm and quickly drops down to 1000F ish on the EGT's. Good to see that you're keeping it below 1200F. Also are you using high range? Take advantage of...- red
- Post #48
- Forum: 5-ton and up
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Killing NHC 250s -what we have learned killing 3 of them.
Diesels are run lean by design with no issues, unlike a gas engine (one of those things that does not compare with both engine types). Increasing the fuel with a diesel engine increases the power but without increasing the air (basically requires a turbo) the exhaust gas temperatures rise very...- red
- Post #15
- Forum: 5-ton and up
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Killing NHC 250s -what we have learned killing 3 of them.
All but #6 since you already have a turbo.- red
- Post #11
- Forum: 5-ton and up
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Killing NHC 250s -what we have learned killing 3 of them.
As you noted the block is cast for the piston squirters but the passage was never drilled out, part of the military contract. Coolant type doesn't really matter for these engines but the PH is important. Absolutely agree EGT's are the main concern and a gauge is the best first engine mod.- red
- Post #2
- Forum: 5-ton and up