BruceSki
Formerly Motoman25
- Location
- Long Island
Anyone know where to source the oring for this pro Tec 650cc yamaha head?
Yep 1211 to seal water jacket, I used black silicone permatex which works good. The earlier model Pro - tec heads had the thin o-rings then they went to the thick o-rings that looks like the one yours needs.A 701 ADA ring fit the hole but it was not fat enough to fill the whole o ring gap. I'd be willing to try a set of 701 orings.
This head just uses two around the combustion area and some 1211 to seal the water jacket right?