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| Piston Ring Gap http://forum.triumphdolomite.co.uk/viewtopic.php?t=33839 |
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| Author: | Mad Mart [ Sat Apr 14, 2018 5:16 pm ] |
| Post subject: | Piston Ring Gap |
What should the piston ring gap be on the top & second rings on a Sprint? I'm looking in the 'operations repair manual' and I can see the diagram but it says "refer to data". I've looked at the data but I can't see anything related. |
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| Author: | MIG Wielder [ Sat Apr 14, 2018 10:37 pm ] |
| Post subject: | Re: Piston Ring Gap |
Hi Mart, I have the AKM3629 manual dated 1977 and the Data is squirreled away on Page 12-5 But to answer your question ... The Top compression ring gap is given as 0.0138 to 0.0217 in The Scraper ring gap is given as 0.0138 to 0.0217 in ( the same ) Oil control chrome rail is given as 0.015 to 0.055 in Oil control expander rail gap is "Ends to butt" Let me know if you would like a scan of these pages. HTH, Tony. |
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| Author: | soe8m [ Sat Apr 14, 2018 11:51 pm ] |
| Post subject: | Re: Piston Ring Gap |
The best is to have the second ring slightly wider gap as the top ring. Jeroen. |
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| Author: | Mad Mart [ Sun Apr 15, 2018 10:58 am ] |
| Post subject: | Re: Piston Ring Gap |
Thanks Tony/Jeroen. I had found those figures (even in the Haynes manual on page 49) but wasn't sure that the "fitted gap" was what I was looking for. I thought they were referring to the tolerance in the piston groove height. |
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