justin_o_guy2
Serious Thumper
Offline
What happened?
Posts: 55279
East Texas, 1/2 dallas/la.
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Top end rebuild at 12 to 15 k? Total nonsense. Whats he think this thing is? A 2 stroke dirt bike?
Barring some mechanical failure, like a valve head falling off & wrecking the piston/head/cylinder, this engine will run to 15 or so thousand miles, then its likely gonna need some cam chain attention, replace it, slap a Verslavy in it,or both,, ,, whatever.
Book says retorque head bolts at 6,000 miles,, mine has 20K on it, never had a head bolt touched, no problems.
Okay,so, could drop a valve, not common, but not unheard of, either. Then there the cam/paddle that pushes the clutch rod. That blasted thing breaks sometimes. So far, I dont think anyone has suffered catastrophic loss over it. One of my cam chain guides broke when that thing went, but it was the one that can be replaced without pulling the head.
I cant imagine being able to get the work done in a shop that you can do yourself. Those guys dont have time to get really knowledgeable about all the ins & outs on such a low buck machine.
Low Idle RPM= Death. Slow, but certain. The oil pressure is low. The cam spins in the head, no bearing inserts of any kind, keep that engine spinning at no less than 1,000 rpm.
The $$$ spent on tools will be saved multiple times by not hiring someone else. AND, youll have the tools for the next mechanical hassle you encounter. Your son can learn right along side you. The people here can & will support your efforts. A maintenance manual & some tools,,, heck, youll be on your way.
Well, as Soon as we figure out that intermittent noise & power surging thing,,
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