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08-22-2021, 07:25 PM
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#1 |
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Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
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Re: Micro Welding of bearing shell to rod housing bore
Yes Ray the cable is connected to the block. I never considered an arcing or plating situation
Not sure on cycles on rods or bolts. Bolts are ARP 7/16 20NF 12 point. The big end of the rod stays rounder longer since we installed a clean neutral valve body in the trans. I use the brakes to stop the car without compression braking. Last edited by Larry Hill; 08-22-2021 at 07:27 PM. |
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08-23-2021, 01:25 AM
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#2 |
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Location: Texarkana Ark/TX
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Re: Micro Welding of bearing shell to rod housing bore
Larry,
The design of the bearing is important. The size of the rod bore determines crush. You may need a bearing with more ellipse or a slightly thicker oil for the .003 clearance. It is a long read, but Mahle has a good read on bearings. All bearings are not created equal! https://www.speedperf6rmanc3.com/con...20Bearings.pdf
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Adger Smith (Former SS) Last edited by Adger Smith; 08-23-2021 at 01:30 AM. Reason: add |
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08-23-2021, 09:59 AM
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#3 |
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Live Reporter
Join Date: Oct 2004
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Re: Micro Welding of bearing shell to rod housing bore
Thanks. I will read it
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08-23-2021, 12:04 PM
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#4 |
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VIP Member
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Location: Massapequa Park,NY
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Re: Micro Welding of bearing shell to rod housing bore
Which Manley rod and which arp bolt ?
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1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop. |
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08-23-2021, 06:53 PM
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#5 |
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Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
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Re: Micro Welding of bearing shell to rod housing bore
Glenn I cant find the info on bolts or rods. Bolt stretch is .0055.
I need to finish my engine to race BG this weekend so my response time will be long until we are at BG. Thanks everyone for the help and input. |
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08-24-2021, 12:50 AM
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#6 |
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Senior Member
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Location: Fulton County, PA
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Re: Micro Welding of bearing shell to rod housing bore
Strange.
So there is no indication of an oiling problem? i.e. crank to bearing face contact/damage? Or bearing shell being hammered (detonation)? Any indication of the caps moving on the rod (fretting on the cap/rod contact surface? Fretting/welding indicates parts are moving under load. Initial thought would be to tighten (decrease) the bore size to the minimum to increase the crush. All I got. Will be watching for responses. |
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08-24-2021, 07:37 AM
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#7 |
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Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
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Re: Micro Welding of bearing shell to rod housing bore
The caps have dowels and the mating surface looks perfect. The upper shell is always not as tight as the cap shell in its bore.
Is there a certain finish that the bore needs to “hold” the bearings? |
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