August 5, 20215 yr Hi All, Looking to finish the rebuild on my 175cc Bultaco Sherpa T and need some new piston rings. The piston is a MAHLE and is 60.8 in diameter. Measuring the bore a 61mm ring should work but I am struggling to find a UK outlet for such a thing. I have tried the usual In Motion and other specialists but they have nothing listed. Also as it has been a while since the strip down could anyone please remind me the correct orientation of the piston. From memory the longer skirt on the piston goes to the inlet side but any confirmation would be appreciated. Thanks in advance for any help.
August 7, 20215 yr Try Classic Bultaco for some rings. www.classicbultaco.com. It is the longer piston skirt which goes towards the front of the barrel. On a Mahle there should be an arrow on the top of the piston which points towards the exhaust port.
August 8, 20215 yr On 8/5/2021 at 11:23 AM, cde050583 said: Hi All, Looking to finish the rebuild on my 175cc Bultaco Sherpa T and need some new piston rings. The piston is a MAHLE and is 60.8 in diameter. Measuring the bore a 61mm ring should work but I am struggling to find a UK outlet for such a thing. I have tried the usual In Motion and other specialists but they have nothing listed. Also as it has been a while since the strip down could anyone please remind me the correct orientation of the piston. From memory the longer skirt on the piston goes to the inlet side but any confirmation would be appreciated. Thanks in advance for any help. Pick up the phone and speak to Dave Renham, if he doesnt have them at in motion im sure he can either source or point you to a genuine ring. Edited August 8, 20215 yr by nigel dabster
August 18, 20215 yr Author Thanks all for your input. It was in motion that sorted me out in the end, all back together but now I have other issues so time for a fresh post.
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