barrytr4 Posted June 28, 2020 Report Share Posted June 28, 2020 Hi Mates I'm Barry Davies from Perth Western Australia ,,Just joined and it's my first post,,,I have a 1961 TR4 it hasn't got valve seats fitted in the head, was talking to the local Triumph repairer and he was saying they don't give trouble as the cast iron was a good grade, just like a second opinion on that, he has got some old stock valve seats ( before non lead?) was thinking would they be ok for the non lead petrol,, anyone got any thoughts on this,, thanks a lot in advace for any replies---Barry Quote Link to post Share on other sites
Nobbyc Posted June 29, 2020 Report Share Posted June 29, 2020 I have had 2 x heads on different cars that have suffered from valve seat recession and had them fitted with new valves and hardened seats. Both then ran on E10 petrol with no issues one after 12 years. Quote Link to post Share on other sites
John Morrison Posted June 29, 2020 Report Share Posted June 29, 2020 Hi Barry, and welcome. Lots of stuff on hardened valve seats here, do a "Search" for info, but basically they go for years with original heads, provided you a driving say usually below 3500 revs, so racing No! Thinking for a long time has been do not pull the head, just to change the valves to hardened, but rather change the valves when the head is off for other work. John. Quote Link to post Share on other sites
ctc77965o Posted June 29, 2020 Report Share Posted June 29, 2020 Hey Barry, I have done 30 years of TR driving without hardened valve seats with no issues related to seat failure. As John says above...theres no need to rush to do it because its the same job you would do in the event you actually had a valve seat recession issue (theres no extra cost if you wait). They dont fail quickly, so if your fuel/driving style/head quality combination were to cause an issue you'd see regular close-up of exhaust valve clearances giving 1000s of miles warining before you lose compression. Dont worry just drive, Dave Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.