Re: [VintageLambo] Crank bearings/questions

Hi Aaron, I went .010 under when I did my rebuild. The bearings for this were available at GTCP. You might call Bill Young and find out what he has available. I would suspect that .020 would not be out of the question. As for building up journals, I don"t know. I have used the plasma spray technique twice in the past but never on something like a crankshaft. Unless the journals are really scored badly, I would suspect that the bearings which are available will handle the regrind. What gets really interesting is when you have over .010 scoring in you cylinders. The OEM pistons are only available in .010 oversizes, so if you have .011 scoring, you need .020 oversize pistons. Fortunately, I found a place that could make them and they are now assigned a part number for stock. Best Regards, Jack aaron arnold wrote: Hello - Can anyone tell me what oversize bearings are available for the crankshaft rod journals? What is the maximum allowance before the crank is no good?Can a competent machine shop "build up" a journal that is very badly damaged? Just a few questions - I brought my spare in today to take to the machine shop for evaluation, it has damage to several journals. Might be a deciding factor between having a spare rebuildable engine, or a spare parts engine. Thanks in advance - Aaron (eng #2410) --- In VintageLambo@yahoogroups.com, "forzav12 " wrote: > Hello. > I just purchased a 1971 Jarama. I was driving it home and at first it > was running very well. I had about a 400 mile trip to complete and I > now realize that it was incredibly optomistic to expect a trouble > free journey. The car has a completely rebuilt engine and trans and I > thought it would get me home. I had to exit the interstate and was > stuck in traffic for about 15 minutes. I noticed the car began to run > a little rough and thought that I might have fouled a plug or two. It > didn"t backfire or get hot. Good oil pressure and no smoke. I stopped > for lunch and started the car after about 45 minutes. It was still > running a bit rough. I re entered the interstate and was able to > maintain 75mph without difficulty. I drove about 75 miles and noticed > that the car was struggling uphill. Once again, no overheating, good > oil pressure, no smoke and no odd engine noises. I continued on and > encountered a steeper grade. Now the car began to loose power and I > downshifted lower and lower. The car continued to slow and stalled as > I was attempting to exit the highway. > We got it off the roadway and into a parking lot. I tried to start it > and it turned over easily but wouldn"t fire. I just tried a couple of > times to start it. I removed on end of the fuel line after the filter > and turned on the punp. It seemed to pump plenty of clean gas. I > reconnected it and called a tow truck. So now its in my garage and I > was wondering if anyone has any ideas as to what might have happened. > I hope I haven"t made a catastrophic mistake. Once again, at no point > did the car smoke, get hot, loose pressure or make any nasty noises. > Thanks, > Steve