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78.5MM Rings http://pilotodyssey.com/PO/viewtopic.php?f=1&t=20993 |
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Author: | Garemie [ Sun Oct 29, 2023 2:41 pm ] |
Post subject: | 78.5MM Rings |
Hey all, Any reason I can't use these rings with one of my old 78.5mm Wiseco pistons? https://www.denniskirk.com/wiseco/pisto ... 3091LK.sku or https://www.vintco.com/Two-Stroke-Piston-Ring-78.5mm |
Author: | canadian oddy [ Sun Oct 29, 2023 4:47 pm ] |
Post subject: | Re: 78.5MM Rings |
I have a question. Are you sure it's not an original oddy piston ? The originals were Art pistons and they had tapered rings. If it is a wiseco piston then the one from DennisKirk would probably work. The LK at the end of that ring code means -- L - means it's been notched for the pin in the ring groove K- means Chromed ring The ring set from the Vintco site has NO INFO so I would take a pass or phone them. To me Vintco means vintage so it's possible the profile on these rings may be wrong. Piston rings have several profiles and coatings. For example a code with an H , B , or R H means outside edge chamfered B means barrel face R means radius outside edge There is more, so you see it can be complicated. Verify your piston and then drop a dime on a phone call. CO |
Author: | Garemie [ Sun Oct 29, 2023 6:54 pm ] |
Post subject: | Re: 78.5MM Rings |
It's a vintage Wiseco piston I believe. The only markings on the piston are a 'TD' and an arrow on top, and a 'W' and 533 where the wrist pin goes underneath. |
Author: | canadian oddy [ Sun Oct 29, 2023 7:30 pm ] |
Post subject: | Re: 78.5MM Rings |
The arrow would point towards the exhaust. I don't know what the other numbers or letters mean. CO Edit: I just looked it up and the only reference I could find in my info on the "TD" is that it indicates that it's a two stroke ring 1.2mm (.047") Two chrome-faced high temperature steel alloy, internally notched compression ring, for use on Cast-iron, Nikasil and Electrofusion Liners. CO |
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