ORIGINAL: Freddy
I have had this chronic problem lately with both my YS160/170DZ. Even after both enginese were checked out at YS Repair d to my leakage issue there is still a huge amount of burned black oil all over the inside of the nose cowling.
I had noticed that the header would slide fairly easy over the O-ring of the Hatori muffler. So I even bought a new set of both Hatori header and Hatori muffler and new O rings and the problem is still the same! I still noticed that the seal does not appear to be tight with the new parts.
I still think that it must be leaking at this interface so my next try is to add a narrow strip of aluminum tape to the inside of the muffler groove to see if I can get a tighter seal around the O ring by pushing it inward due to shrinking the groove inside diameter.
Any inputs?
Has anyone experienced this problem?
Thanks.
Freddy,
You can make your own seal ring and get a perfect fit. Get some ceramic cloth from McMaster Carr and a tube of Permatex Ultra Copper high temp sealant. Impregnate strands of ceramic with Ultra Copper and simply wind the thread onto the stem. Fit the header and let it cure overnight.
You can also make your own coupler with ceramic cloth and Ultra Copper. It's the best there is. If you decide to try it let me know and I'll walk you through the process.If any of you need the best coupler around, I don't charge much.Much better than Teflon because it seals the same as any silicone coupler, with about 600F temp rating