- Joined
- Aug 29, 2010
- Messages
- 682

OK, this is a "type" of exhaust port thread, but along lines I haven't seen before. I have two 850 motors I hope to build soon, gathering the parts together now. One has an RH10 head, and the other an RH4. The RH10 has what appear to be steel inserts threaded in; with two small roll pins at 180 degrees from eachother to "peg them in place" ... I guess. The RH4 should be with Jim C getting the inserts that he makes, ( silicone bronze ?) ... so I don't have pics of it. Maybe he will post ?
Questions, should the RH10 use the stock steel exhaust nuts ??? (I would think like metals will "gall" each other) Or, should I use some bronze exhaust nuts. ( I have them on my 750 that has good stock port threads and they work great.) Or ... should I use something else ?
On the RH4, should I use steel, bronze, or something else ? Comments please.
Questions, should the RH10 use the stock steel exhaust nuts ??? (I would think like metals will "gall" each other) Or, should I use some bronze exhaust nuts. ( I have them on my 750 that has good stock port threads and they work great.) Or ... should I use something else ?
On the RH4, should I use steel, bronze, or something else ? Comments please.