Posted by Mark - IN. on July 01, 2014 at 16:22:33 from (76.16.22.126):
In Reply to: 366 Engine posted by 4020 on July 01, 2014 at 11:04:29:
Well, if you are not sending oil out the push rods, you have a serious problem. The oiling operates this way on Chevys. Crankshaft operates the cam shaft, the camshaft operates the distributor, the distributor has a shaft in the base of it that drives the oil pump. Its possible, but unlikely that the shaft between the distributor and the oil pump broke or wore out, BUT its possible that the pin inside the base of the distributor shaft below its drive gear broke. Thats possible.
You didn't happen to lose, replace a worn or broken cam gear, did you? Nylon toothed cam gears were the biggest culprits of clogging the oil pump sump pickup screen when they break off, although metal ones can and do as well. The teeth on a cam gear break off, go down into the oil pan, get sucked up by the oil pump, clog the screen in the pickup, stop oil flow...and bad things happen...spun bearings, worn cam lobes, mushroomed lifters on their base, everything that moves internally inside of the engine gets damaged because oil isn't flowing through the engine passages to the moving parts.
Why don't you have oil pressure? Bad oil pump? Clogged pickup screen? Cam from a 1968 or older BB was inserted in a 1969 or newer BB using the newer cam bearings without solering their holes shut and redrilling at 3/16"?
If you got no oil to your lifters, its a short distance from your pump sump pickup to those lifters...pump, oil passages cast into the block, to the lifters. In the front of the block behind the timing cover are 3 plugs that are removed with allen head wrenches that run straight back to the back of the block. If my memory serves me correctly, at the back of the block they are plugged by freeze plugs. You pull the freeze plugs out, unscrew the allen head plugs at the front, and clean those passages out using a gun cleaning kit during a rebuild. At the back of the block, those 3 passages are tied to the passage fed directly from the oil pump, all cast into the block and machined for flow.
Its pretty simple. Oil pump sends oil up into its passage at the rear of the block. That passsage sends oil into the 3 passages that flow parallel to the cam, towards the front of the block. Those passages feed the cam bearings, crankshaft bearings, and the oil makes it to either the mechanical lifters, or into the hydraulic lifters to pump them up, either of which goes up the hollow push rods to lubricate the rocker arms, valve guides, anything that moves internally within the engine.
You have a blockage, or something physically broken that is stopping the pump from doing its job.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
