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Author Topic: Over size piston rings?  (Read 225 times)

queenofjacks

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Over size piston rings?
« on: January 10, 2020, 06:17:12 PM »
  I'm wondering if I should bore the cylinder of an 8/1 that I am overhauling  and if so how much?  Are oversize rings available??  Any info would be greatly appreciated.  --- Thanks
Lovson 10/1  7.5KW - Power Solutions 20/2  12KW - Lister SR2 7.5KW - 2-Lister 8/1's - Lister TR2 7.5KW

Hugh Conway

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Re: Over size piston rings?
« Reply #1 on: January 10, 2020, 11:31:42 PM »
For a Dursley, oversized pistons & rings are available and the cylinder can be rebored. Here's a source:

https://www.stationaryengineparts.com/-Cylinder-piston-rings-and-con-rod/
For a listeroid, it might be better to replace the sleeve and use standard size piston and rings.

Cheers
Hugh
JKson 6/1  (Utterpower PMG ) Off-grid
Lister 6/1 Start-O-Matic engine......running with PMG
1978 Royal Enfield (glutton for punishment by Indian iron)
1963 BMW R-27 project

listard-jp2

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Re: Over size piston rings?
« Reply #2 on: January 11, 2020, 09:32:31 AM »
Why take chances on questionable quality Indian sourced items, when you can have a genuine UK manufactured item?

https://www.ebay.co.uk/itm/LISTER-CS-NOS-GENUINE-NOS-HEPOLITE-COVENTRY-PISTON-BACO-OVERSIZE-VA-6-1-8-1/254185213781