Re: Unleaded gas

Posted by Craig Hendrickson On 2018/5/30 9:20:00

Maybe 15 years ago, I experienced exhaust valve seat "recession" on my 55 Pat due to the use of unleaded gas on a couple of long trips. I pulled the heads (no easy feat) and had the exhaust valve seats fitted with hardened seats. That solved it and I haven't had a problem since.

Craig