Re: Re: Re: strange objects in cylinders

Posted by Wayne on October 21, 2003 at 21:19:39 from (205.188.208.73):

In Reply to: Re: Re: strange objects in cylinders posted by Allan on October 20, 2003 at 20:25:30:

Hey Allan, I didn't realize the old T's were splash lubed, I learned something new tonight...Thanks
As far as dropping pressure completly because of one oil hole being open I know it's possible, and even probable in most cases especially on high RPM gasoline engines. Like I said though, if the oil pump is in good shape, it shouldn't cause anything but a big loss in pressure. I have seen a 6-71 Detroit that was run for something like 2 weeks, and was still running when Dad went to look at it, with the crank broke on a main journal and the bearing all but gone on that one journal leaving a huge gap. With the bearing "gone", yes not just wiped, but wiped until the bearing shell was paper thin so there was probably a 1/16 gap. This was a large enough gap to drop all pressure from that journal, but it was still holding between 25 and 30psi at full throttle of 2100 RPM, plenty enough for the 10psi per 1000 RPM giude. The journal didn't have a straight brake, it had a stepped area that kept driving the other half, and except for the loss of pressure and a slight vibration, the operator didn't notice any problems with the way his crane was running, and it wasn't even overheating believe it or not.
I know this may sound far fetched, but I gave up a long time ago sayying something isn't possible when it comes to equipment. It seems like everytime I think I've seen it all I see something else that "Just shouldn't happen".... but it does. It makes me wonder sometime......

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