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Re: Engine rebuild

From: Hank Dozier
Remote Name:
Date: April 30, 2002


Regarding your engine rebuild, NOW is the time to convert to the LA filter base and insert the blockoff into the bypass shunt in your oil system. You need not worry about detrimental effects, because the new spin-on filters have the pressure blockage relief built-in, and therefore this internal is now redundant. Regarding moly versus standard rings. I would go with the moly rings. Speak with whomever is doing the boring/honing, and they will match the cross-hatch angle and surface roughness for the rings, if they know what you plan to use. DO NOT use synthetic oils like Amsoil, Castrol Syntec or Mobil 1 for the first 3 to 4 K miles. Otherwise the moly rings will not break-in properly. Use a good 10W-40 or 20W-50 multigrade oil, and plan on an oil change (including filter) at 500 miles, and another at the 3-4K point, depending on preference and driving habits. To break these rings in, thry to make sure you give the engine some load (Don't go overboard with WOT high speed stuff), as the rings need the combustion pressure to stick to the cylinder walls and seat. If you have a new camshaft and lifters, make sure you break the engine in for the camshaft first by light load and varying rpm, but keep it above 1500 and below 3500 for the first few miles. A cam should seat in in about the equivalent of 25 miles or so. Then do the ring break-in schedule.


Last changed: July 19, 2018