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12-04-2021, 09:28 PM | #1 |
Member
Join Date: May 2021
Location: Auckland New Zealand
Posts: 48
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V8 piston rings
Hi Guys.. I was checking the ring gap of my new rings when I noticed that the box was missing a spring tensioner on the third oil control ring. 2x times thin steel flat rings separated by a wiggly spring. The wiggly part is missing.
There are 4 ring grooves with the 4th ring being cast iron. Can I just install 3 rings and leave the 3rd one out? Can I install the 4th ring in the 3rd ring position? I've got some old pistons with rings so could I use a second hand piece in the new pistons? Ideas anyone? Regards Kevin |
12-05-2021, 07:56 AM | #2 |
Senior Member
Join Date: Oct 2019
Location: Carthage , Tennessee
Posts: 199
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Re: V8 piston rings
The wigley piece is just an expander,,,,the thin flat rings are what cleans the oil off the cylinder wall .
They wear,,,the expander doesn’t . You should be good if you need to reuse one . Tommy |
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12-05-2021, 02:10 PM | #3 |
Member
Join Date: May 2021
Location: Auckland New Zealand
Posts: 48
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Re: V8 piston rings
Hi Desoto.. the 2nd hand expander is off a +40thou piston. The new pistons are +80thou that is a difference of 40thou or 1mm in metric speak. The height seems right. I'm don't want the engine to chew much oil.
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12-07-2021, 04:20 PM | #4 |
Senior Member
Join Date: Oct 2019
Location: Carthage , Tennessee
Posts: 199
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Re: V8 piston rings
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If you have new oil rails,,,,it should be good . Tommy |
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