Search results
Results from the WOW.Com Content Network
Now here's the deal: I've got an M818 that was running poorly, smoke, fuel in coolant, no power at all. So, I pulled the injectors and cylinder #2 had no tip left. I figured they are cheap enough I'll replace them all. After swapping the new ones in the truck ran poorly, smoked a TON, and...
The NHC 250’s have become sort of infamous for cavitation caused liner failure. We saw some pitting damage in two motors but none on the third. Chasing cavitation issues was a red herring for us, it distracted me from what I was doing that was actually killing them.
The NHC 250 does not have piston coolers, so you will not be able to run it hard. They did make small cams in the 400HP range though. You can step up to 290-300 injectors only if you turn up ur fuel pressure. you add more stress on the camshaft when you turn up the rail pressure.
Cummins NHC-250 Problems I have a M813A1 and love the big Cummins. You need good batteries to turn it over, and I would recommend you put a block heater in it, if it doesn't already have one. (Miine didn't but does now). I did have an alternator problem, and had to replace the same, when it couldn't be rebuilt.
I see many people would like to turbocharge an NHC-250 and I had that interest at one point as well. I may still do it someday but only because I like the sound of a turbo spooling up. Simp has hauled many heavy loads many miles on a non-turbo NHC-250 with the fuel turned up on the throttle shaft, button change in the injection pump, dual fuel ...
CONS -- parts availability, starts better than the NHC-250 in cold weather but still needs a sniff of ether I've had both NHC-250-powered trucks (M929A1, M928A1, M932) and 6CTA 8.3-powered trucks (M936A2, M932A2 and now two M925A2s). While I love the 6CTA 8.3 motor, I would suggest that anyone who is interested stick with the NHC-250-powered ...
The pressure is regulated in the pump. The oil pressure is taken from a galley after filtering. It is possible for the crappy baldwin filter to be normal baldwin junk and the oil is bypassing the filter, cummins will bypass the filter if the differential is too high, dirty oil is better than no oil.
Just got my Baldwin 1368 in the mail, for converting the oil filter to a spin on type. Instructions say to use a specific included gasket only if the motor has a "NH Horizontal Pump Mount Head P/N 197093". Does that apply to the NHC 250? I can't find anything online or from previous oil filter...
ive been told by cummins wrench turners, that to make a cummins 250 into a cummins 290 (addind turbo), you have to change the cam to the big cam, we have the little, do a major injector pump retune, change the basic timming, and a few other things to make this work. plus add cooling. i was going to do this on my m819, as a side note, found out that a jake set up wont clear the hood at the ...
Anyone ever had a NHC 250 fuel control shaft leak that they fixed? Mine has a drip that causes me to lose prime after a few days and is causing slower starts. Runs fine after start up but is more annoying than anything. Is it a simple repair like an o-ring or more complex? Is it worth a tear down or just as easy to buy another used serviceable ...