Ian Vincent Posted November 2, 2009 Report Share Posted November 2, 2009 Moving on from the previous thread, having discovered that I have 87 mm pistons, I will now just check the ring gap and probably just replace the rings if they are worn. I notice that on the Moss site 87 mm dia rings are NLS. Does anyone know a supplier and if they aren't available, can I just use 40 thou oversize rings for an 86mm piston set? Obviously, I have to make sure that the lands are the same size and check the gaps, but is there anything else that would make it a no no? RGds Ian Quote Link to post Share on other sites
Alec Pringle Posted November 2, 2009 Report Share Posted November 2, 2009 Hi Ian, you might find some joy here http://www.fwthornton.co.uk/16.html Cheers, Alec Quote Link to post Share on other sites
Don Elliott Posted November 2, 2009 Report Share Posted November 2, 2009 My 1958 TR3A had 1991 cc displacement when new and after 80,300 miles in 1987, I bought and installed new pistons, rings and liners which I bought from Peter Hepworth in Yorkshire because these were also 1991 cc. I had them shipped to me in Canada. In 2007, after 94,000 miles on these pistons, rings and liners, I needed new rings but the Hepworth pistons are rather special with 4 rings per piston - whereas all the other ring sets are for the S-T pistons which have 3 rings per piston. All I did was Google for piston rings and I found what I wanted directly from Hastings in Michigan. The lady on the phone at their customer desk looked it up and I gave her my Mastercard number and three days later, I had the set of rings (4 rings per piston) directly from the manufacturer. Their price was cheaper than if I had bought these rings from any supplier. I suggest that you check on Google dirctly from ring mnufacturers. Quote Link to post Share on other sites
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