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Re: what head work is needed when ringing M???
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Posted by buckva on June 30, 2005 at 17:17:49 from (209.240.205.63):
In Reply to: what head work is needed when ringing M??? posted by scruffyia on June 30, 2005 at 09:04:44:
Lets say that all looks well with the head and valves. Just attempt to move the valve stems from side to side in the valve guide. If they feel sloppy/loose then valve work is indicated. Say they feel tight then they are probably fine. Now place the head with the valve heads up and as level a possible. Pour motor oil around the valve heads and let sit overnight. Next day observe the area of the valve stem to see if ay oil came thru. If oil is showing on the stem area then some valve to seat work is in order. If no oil came thru then you are good to go. This said I would suggest that you take this oppertunity to replace the seals and lap in the valve/valve seat area. Now what I am about to say is going to get a lot of people sorta out of shape but believe me it is happening all over the world. Once you have removed your rings from the pistons and have everthing cleaned up take one of the old compression rings and push it thru the cylinder with the top of a piston. Move it about 1/2 inch at a time and look at the end gap in the ring. This will tell you if the cylinder is worn more in one place. If it is a big difference then you need cylinder work. If not warn then move on to ring selection. If the cleaned up piston feels good in a prepared cylinder then I suggest getting a .0010 over size ring set and hand filing the ring ends to fit.
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