New rings

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Topic author
philip
Posts: 80
Joined: Sun Jan 06, 2019 12:09 pm
First Name: Philip
Last Name: Thompson
Location: Graham nc

New rings

Post by philip » Tue Jan 29, 2019 8:57 pm

My car had some blow by and smoking so I decided to
Put in a new set of rings. I am at standard bore with cast iron pistons. All of the vendors were out of standard
Rings so I ordered .010 over and gapped them to .012.
I started it up and got smoke out of the crank case once it got hot then the motor was tight. I have it back apart
No dAmage was done. Should I gap the rings wider or
Wait for Grant to make some standard rings. Philip


kerry
Posts: 203
Joined: Mon Jan 07, 2019 2:42 pm
First Name: Frank
Last Name: van Ekeren
Location: Rosedale Vic Australia

Re: New rings

Post by kerry » Tue Jan 29, 2019 9:36 pm

Did you hone the bore?


Norman Kling
Posts: 390
Joined: Tue Jan 08, 2019 1:39 pm
First Name: Norman
Last Name: Kling
Location: Alpine California

Re: New rings

Post by Norman Kling » Tue Jan 29, 2019 9:41 pm

Those rings should hold oil better than the standard rings. I would suspect your bore is out of round from many years of service. You may possibly even have scored cylinders. If you honed the cylinders, the rings might "break in" with a couple thousand miles. If not, you need to rebuild the engine. Another possible cause of oil burning could be loose intake valve stems which would cause vacuum to draw in oil. Another reason to rebuild the engine or at least replace with oversize valve stems.

Norm


Topic author
philip
Posts: 80
Joined: Sun Jan 06, 2019 12:09 pm
First Name: Philip
Last Name: Thompson
Location: Graham nc

Re: New rings

Post by philip » Wed Jan 30, 2019 6:24 am

I put new valves in reamed .015 over. There was no smoke out the tail pipe but out of the oil fill. I set the
Gaps up at .012

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