| cliftford | -- 10-01-2019 @ 5:07 AM |
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Do the ford 8BA and the 8CM merc . engines use the same connecting rods? I;m truing to remove the crank from a badly rusted 8CM block and am considsering cutting the rods to get it out. If the merc rods are different I would try to save them, as they are harder to find than the 8BA ford ones. Any advice?
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| 39 Ken | -- 10-01-2019 @ 5:11 AM |
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Rods can be re-conditioned. I would break the pistons for removal.
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| TomO | -- 10-01-2019 @ 7:56 AM |
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The Ford and Mercury engines used the same rods, 0BA-6200. I would take 39Ken's advice and break the pistons or use a 50/50 mixture of Acetone and automatic transmission fluid to break the rust bond between the piston rings and the block. Tom
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| 37RAGTOPMAN | -- 10-01-2019 @ 3:05 PM |
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hi try this to remove the rods, you can try breaking the pistons loose, by try loosening each connecting rod, so the crank turns, turn the crank , with all eight rods loose, not completely removed now use a hard wood board the size of the piston bore, and tap each one separate, using a good rust buster, now you are only trying to loosen one piston at a time. [ not all eight at one time, , cause when you knock one piston down another is trying to go up, this works if cylinder walls are rusty, hone the rust , so pistons can move up I cannot tell you how many times I have do this on many different make of engines, hope this helps 37Ragtopman
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| cliftford | -- 10-01-2019 @ 5:01 PM |
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37ragtopman: this is the best idea I have heard yet. I never thought of loosening all the rods. I'm working on an old block that has sat outside without the heads for years. The lower end looks good so I am trying to save the crank. The block is toast. Thanks much.
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