Re: cub- know just enough to be dangerous

Posted by Fred Martin on January 19, 2000 at 07:19:19 from (208.32.116.3):

In Reply to: cub- know just enough to be dangerous posted by john on January 18, 2000 at 12:20:54:

Hi John from Fred
I would tell my friend that I am not rebuilding the engine, I'm restoring it to manufacturers specs. That will require new pistons, rings, pins and rod bushings and reboring or new sleeves. The crankshaft will also have to be removed and micrometer measured to see if its worn egg shaped and needs to be reground for oversized bearings. Same way with the camshaft. Then a new or rebuilt oil pump. The bare block should be put in the hot tank, boiled out, inspected for cracks and new freeze plugs installed. Next is the valves: The stem has to measure within tolerance, then the clearance between it and the guide. Guides are replacable and generally so are valve seats. Then after all this is bought up to specs, the valves are ground on a machine and the seats are ground in place. Most mechanics like to lap the valves in after all this. Next is the head: Visual inspection,magnafluxing and checked for flatness and resurfaced if necessary. Then after everything is up to specs, you will need an overhaul gasket set and seals and a tube of breakin lube to coat all bearing surfaces as it is reassembled. This job can be done by your mechanic friend on his engine stand. Make sure you have a specification book on hand for torqueing of the various bolts and nuts right. There, John, is the basics of rebuilding your engine to as near to perfect as you can get it. By the way, you should get estimates on pricing on these various things unless you have a real good "hip pocket personality". PS You also get to paint it, primer it first. Do it on your friends engine stand. Final result: You'll have a good running engine and you'll still be friends if you don't get too much overspray on his engine stand.
Fred from the Mung Factory

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