Hello RMidgett,
Was the hole pattern truly not rectangular? I find that VERY odd and wonder if it is supposed to be 4.875 x 7.625. I want to make a fixture to mount the engine cradle rails to perform the modification with the cross member welded in.
How did the helicoils hold up? I'm about to do the same.
Thanks,
Kevin
Quote:
Originally Posted by rmidgett
I recently had to repair two of the engine mounting bolt holes in the oil pan of my 1250. Both were on the left side. The pair of holes on the right side are in good shape, and I don't like to fix what isn't broken.
I bought a Power Coil thread repair kit a a local bolt supplier. The kit didn't come with coils long enough for the hole depth (~.975"), so I purchased additional coils that were too long & cut them off flush with a Dremel cutting wheel after installing them. I applied blue thread locking compound on the coils as I threaded them in. I'll let the thread locker cure before putting bolts in the new holes.
I have access to a vertical milling machine at work, so I used it to center the drill bit & tap to repair the holes & threads. In the process, I carefully measured the dimensions & documented them overlaid on a photo of the oil pan. I hope this information is helpful to others reading this thread.
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