i know this is important but

Nick167

Member
On the 77 I'm rebuilding I'm sure I have the correct rod caps with the rod they came from but I still have that feeling that I don't anyway will I have serious problems if I have 1 or 2
switched around?
 
My Ford 8N had numbers stamped on them very faintly. Also there may be dots center punched on them to match them up
 
You will have problems if you get them mixed up. If not sure take them all to a machine shop and have them resized. Good idea anyhow.
 
I didn't see any numbers my ford was the same way. If I get them realized will I have to get different size bearings?
 
Usually, you can tell if they are right by feel. Put the cap on the rod, and feel if there is a raised edge anywhere. When they are mixed up, they will have a raised edge somewhere to tip you off.
When rods are originally machined, they are torqued, mounted in a fixture, and bored and honed to size. Rarely will two cap and rod assemblies be exactly the same. So, if you mismatch them, you should feel that mismatch.
As a final check, plastigage them. If they are mismatched, clearance will simply be wrong - either too tight or too loose. If the clearance is right, they are most likely correctly matched.

A bit late for this.....but.......let this be a lesson to MARK things BEFORE you take them apart. Things that need to be matched or to go in a specific place NEED to be marked before disassembly.
 
The same bearings will fit. They grind the mating surfaced down, resize the bore back to factory specs.

Be a good opportunity to get the wrist pin bushings done while they have them.
 
Look close for dots punched in them. Sometimes you'll find one dot in number one,two in two,etc.
 
Often if you look closely at the rod and cap surfaces that the insert goes in, you can see images left from the machining. I always work with one at a time and never let the caps get away from the rods.
 
I'll check again for numbers then check make sure they're smooth if I'm not sure I'll just take them to a machine shop
 

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