Oil return fitting

Started by Thomas, August 16, 2026, 07:35:05 PM

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Thomas

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.
1946 BSA C11
1937 Sunbeam Model 9
... and a scratched Hyundai
(MSCR member)

Thomas

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. 
1946 BSA C11
1937 Sunbeam Model 9
... and a scratched Hyundai
(MSCR member)