The Marston Sunbeam Club & Register Forum

General Category => Technical Discussion Forum => Topic started by: Thomas on August 16, 2026, 07:35:05 PM

Title: Oil return fitting
Post by: Thomas on August 16, 2026, 07:35:05 PM
Hi all! The fitting of my oil return pipe snapped. Does anybody have an idea what threat and bolt it is? I measure 9 threads on 8.7mm (about 26 TPI) and 9.6mm outer diameter. 
Title: Re: Oil return fitting
Post by: Thomas on August 19, 2026, 09:24:28 AM
As previously done for my broken rocker shaft I asked again my local laser welder to try a repair. Luckily, he was successfull and I paid 20 Euro for the coffee cash. The advantage of laser welding is the low temperature input into the surrounded material. Hardened material won't loose its hardness.