Ya, meant the rotax style. I have the same as you, ballish ring clamped with floating flange. My heads were properly ruined with fretting and leaking, in addition to three cracked headers (one at a time) ….all due to torsional resonance with my original (heavy) three blade warp drive taper blade fixed pitch prop and the resultant pocketed gearbox dogs. To rescue the heads I had to lap them with the an exhaust ball-end, but they would still leak due to the pitting. The Honda copper crush gaskets proved leak and trouble free. P/N 18291-MN5-650 per the attached photo. I did end up replacing my gearbox dogs (and thus the gearset sadly $$$), and upgraded to the super light wieght CS E-prop and all my issues have disappeared :-D. And the replaced dogs still look like new after 400hrs. I’m confident that the dogs were pocketed during Troy’s initial 250hrs. No more resonance or cracked exhausts since (they were cracking every 70hrs or so). Cheers, PeteZ
> On Jan 5, 2024, at 3:26 PM, n7188u <chmgarb@gmail.com> wrote: > > --> Europa-List message posted by: "n7188u" <chmgarb@gmail.com> > > Thanks Peter, > > Not sure what the sleeved one is (the Rotax style?) but I have a CKT muffler > purchased 3+ years ago. Just a ball(ish) or taper looking ring at the end of > the tube. > > What is this Honda copper gasket you use? > > I looked at it again today and in reality the leak is very minor and no > obvious gap is visible. But again I am concerned about deterioration of the > aluminum surface on the head. > > For now I ordered the Hylomar seal compound and I will thoroughly clean the > surfaces and will reinstall with that. > > I also heard something about Bud having a lapping procedure for this. I > appreciate all advice. > > Chris > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=513022#513022 > > > > > > ==================================== ==================================== ==================================== ==================================== ==================================== > > > |
