Very loud tapping randomly...exhaust leak, lifter?
#51
I also have another rocker box setup I could throw on there to see if it is the rocker setup. I may do that as a next step. If that doesn't work then it has to be the heads or possible the pistons at which time I will just send the heads to Hammer and have them go through them and the just buy a 1275 kit and hope for the best.
#52
#53
#54
I also have another rocker box setup I could throw on there to see if it is the rocker setup. I may do that as a next step. If that doesn't work then it has to be the heads or possible the pistons at which time I will just send the heads to Hammer and have them go through them and the just buy a 1275 kit and hope for the best.
#55
I have rocker lockers on the other set of rocker boxes, which are OEM. The set I am running now are S&S rocker boxes, which are pretty different in how they are set up, but operate in the same manner of course. To me signs are still pointing towards a sticky valve which could have toasted one of the lifters or a bad lifter toasted one of the valves. Or maybe it's just a little carboned up. I am going to run it again tomorrow for an hour and see what happens now that the solvent in the gas and oil has had time to sit a bit. It was lighter today so maybe it will work itself out. I'll run it an hour a day all week and see what happens. Everything is new in the engine minus the rods/crankshaft. When the engine is not fully up to temp it runs and sounds awesome, and even at temp half the time it sounds great too.
Last edited by OCSpringer; 11-21-2023 at 03:37 PM.
#56
I have rocker lockers on the other set of rocker boxes, which are OEM. The set I am running now are S&S rocker boxes, which are pretty different in how they are set up, but operate in the same manner of course. To me signs are still pointing towards a sticky valve which could have toasted one of the lifters or a bad lifter toasted one of the valves. Or maybe it's just a little carboned up. I am going to run it again tomorrow for an hour and see what happens now that the solvent in the gas and oil has had time to sit a bit. It was lighter today so maybe it will work itself out. I'll run it an hour a day all week and see what happens. Everything is new in the engine minus the rods/crankshaft. When the engine is not fully up to temp it runs and sounds awesome, and even at temp half the time it sounds great too.
#57
#58
Well, I went out for another hour long ride (same route as yesterday) and after running with MMO the ticking has definitely quieted down and is less consistent. The bike ran very well actually and I am cautiously optimistic. I do think it is a sticking valve and likely it toasted the lifter. That's my theory anyway.
The following users liked this post:
John Harper (11-22-2023)
#59
Finally got a good video if the clicking coming and going. I am pretty much certain it is the rear exhaust valve sticking. Took it on 100 mile ride today and really hammered on it and it didn't miss a beat aside from the clattering that comes and goes. It is getting better though so I am hopeful it will work itself out.
#60
The following users liked this post:
John Harper (11-24-2023)