Re: valves through piston

Posted by Bob/Ont on March 27, 2006 at 07:23:24 from (172.163.126.30):

In Reply to: valves through piston posted by fixerupper on March 27, 2006 at 06:54:33:

If it was from over reving all six cyls would be affected not just one. Was the lock nut on the Exh rocker tight? If the adjustment backs off the adjuster ball can get up on top of the cup on the push rod end and the valves shoved too far down, hitting the piston. The bridge adjuster coming loose can also cause valve trouble. I would throw six liner kits into it and a new set of crankshaft bearings while it's apart. Definatly set the fuel to spec and look at the turbo. If an old engine is down on power, people that know enough to be Dangerous think opening up the rack will correct things. My experiance tells me that a new governor spring, set of flyweights and thrust washer will serve you better. As the spring ages it gets weaker and the engine has to load down more to get full fuel. The flyweight leg ends also wear into the thrust washer and get harder to move too. All this makes for slugish governor responce when the engine is loaded down. Another thing to look at is the fuel timing advance in the pump drive, the center sometimes works loose and doesn't always drive as fast as the pump does. It spins the set of flyweights that control the timing advance.
Later Bob

Replies:

• Re: valves through piston fixerupper 08:34:12 03/27/06 (0)

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