Author Topic: How to separate connecting rods?  (Read 4948 times)

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ToddK

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How to separate connecting rods?
« on: November 13, 2012, 04:16:47 AM »
I know there are tools available to split the cap from a connecting rod, but what is the best way to do it with a rod on a crankshaft?

I'm starting to dummy up an engine to measure piston deck height and was wondering what is the best technique to split the rod. These are Scat I beams and have rod bolts. I've done this before with rods that have studs and nuts, but not with bolts. I'm sure there has to be a simple method, but it's just not making itself obvious to my tiny brain.

Barry_R

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Re: How to separate connecting rods?
« Reply #1 on: November 13, 2012, 06:23:20 AM »
Brass drift punch (rod) and/or a hard plastic mallet work - just a clean sharp blow usually breaks things apart without damage.

GJCAT427

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Re: How to separate connecting rods?
« Reply #2 on: November 13, 2012, 06:26:47 AM »
I usally back the bolts out a few threads and tap the heads of the bolt with a brass or fibre mallet. Then remove the bolts, remove the caps and push the rods out with the hammer handle.

ToddK

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Re: How to separate connecting rods?
« Reply #3 on: November 13, 2012, 08:43:49 AM »
Good idea to tap the heads of the bolts, why didn't I think of that? I'll give that a try.

machoneman

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Re: How to separate connecting rods?
« Reply #4 on: November 13, 2012, 09:13:45 AM »
A leather mallet, used often in woodworking. Can't damage a thing.
Bob Maag

lovehamr

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Re: How to separate connecting rods?
« Reply #5 on: November 13, 2012, 09:51:11 AM »
Close to the same thing here, I just use a rubber mallet.  More bounce than a leather or fiber mallet but you shouldn't have to beat the crap out of it.