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Old 08-25-2021, 12:21 PM   #1
Glenn Briglio
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Default Re: Micro Welding of bearing shell to rod housing bore

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A good read on honing the big end of steel rods is in the SA Design Jenkins small block Chevy book I’d how he puts .002 shim stock the hens the rods round then removes it. The rod is now out of round but high rpm it stretch’s back round as I remember it’s when the rod does not have enough material at the parting line.
This is when there weren't any good connecting rods available. Today's rods stay round even at higher rpm. That's if it's a good quality rod. Crower, Callies, etc
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Old 08-25-2021, 02:01 PM   #2
Ralph A Powell
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Default Re: Micro Welding of bearing shell to rod housing bore

If read the article he was talking about Carillo (not sure of spelling) rods they are shown in the book. At that time there were good Steel aftermarket rods available.

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This is when there weren't any good connecting rods available. Today's rods stay round even at higher rpm. That's if it's a good quality rod. Crower, Callies, etc
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Old 08-31-2021, 07:30 AM   #3
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Default Re: Micro Welding of bearing shell to rod housing bore

I got to speak with Glenn Briglio in person yesterday, what a wealth of knowledge, and he advised changing out the ARP rod bolts to a higher quality bolt next time. And then the sprinkles fell.
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Old 10-07-2021, 02:13 PM   #4
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Default Re: Micro Welding of bearing shell to rod housing bore

Dan Beagle from Mahle spoke on the subject and said low radial pressure on the bearing shell could be a possible answer. This was on the AERA webinar.
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Old 10-09-2021, 07:50 AM   #5
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Default Re: Micro Welding of bearing shell to rod housing bore

Mr Beagle advised to check with the rod manufacturer on correct ID finish in housing bore. It maybe to smooth and allowing the shells to move.
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Old 10-09-2021, 08:48 AM   #6
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Default Re: Micro Welding of bearing shell to rod housing bore

Maybe you need a oil with more EPI activities To keep the oil from being squeezed out!
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