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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old January 25th, 2017, 08:16 PM
ggoswick ggoswick is offline
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Default New Oil ring seems to be too wide for the groove!

Hi all,
I am rebuilding my '61 GMC 1/2 ton 305E v6 engine. Started to install the oil rings first and the expnsion ring is too wide to seat into the bottom groove, even without the wiper rings installed. Compression rings (all 3) fit well. I got the rings from EGGE Pistons. Went to the Mfg.(Grant) web page and the P/N is correct for a 305 V6.
Has anyone on the list had this issue? Suggestions welcome!

Thanks,
Glenn

Last edited by ggoswick; January 25th, 2017 at 09:28 PM.
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  #2  
Old January 26th, 2017, 03:03 PM
ggoswick ggoswick is offline
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Default Re: New Oil ring seems to be too wide for the groove!

Problem resolved - "cockpit error". I hadn't fitted the thin 'wiper' rings properly!
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Old January 26th, 2017, 07:07 PM
MrCos MrCos is offline
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Default Re: New Oil ring seems to be too wide for the groove!

any pics of the rebuild? best of luck with the rest of it!
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  #4  
Old January 26th, 2017, 10:30 PM
ggoswick ggoswick is offline
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Default Re: New Oil ring seems to be too wide for the groove!

Not yet. Have been just getting parts together! Currently waiting for the crank to be ground for new main(VERY lucky to have found!) and rod bearings, and block which is being cleaned and fitted with new cam bearings and freeze plugs.

Glenn
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