Having oiling issues with my 330 DeSoto hemi. Just had it rebuilt back to stock specs. We've been trying to prime the oil system for break in. Have oil to the bottom,oil pump is working and have oil pressure at the sending unit, but can't get any oil up to the rocker ***embly. What am I doing wrong? Is it put together wrong? Thanks
Be sure you have the rocker stands in the correct position. Try rotating the motor over a bit at a time while priming.
Also make sure the oil journals and the rocker tubes have been thoroughly cleaned. My motor was "rebuilt". Some helpful folks here suggested I pop the end caps off the rocker tubes before I tried to start it. I found a bunch of sludge in mine. Turns out the engine shop never touched the rocker ***emblies.
As TR said, there only one point in a cycle where one side gets oil, and another point for the other. If you're not turning the crank they won't oil. If you are turning it over and no oil at any point getting up there, then the oil galley plug behind the Dizzy may have been left out..or..if the rocker stands are in the right place,only 1 per side has the oil p***age, the other possibility is the cam bearing wern't aligned with the oil p***ages in the block.
One thing I' ve learned is when putting the short block together take a gas brazing rod and stick it in the rocker p***age in the block. Then slowly turn the engin over and the rod will drop into the p***age in the cam then mark the balancer. Repeat in the other p***age.
Here's how you can check cam bearing alignment without pulling out the cam. ***uming you have pulled the rocker arm stands, get a piece of br*** or aluminum rod about 1/16" in diameter along with a stethiscope used by mechanics or doctors. Stay away from a steel rod or you could scratch the cam. After you have adapted the rod to the stethiscope, gently run it down the oil port through the head until you are sure it has reached the cam journal. Have someone turn the motor over with a wrench slowly so that the cam is also turning. With the stethiscope on your ears and someone turning the motor, you should be able to detect the cam turning while it is turning against the rod. If you don't hear it, there's a good chance the bearings are misaligned. Also, if you're using a drill to prime the motor and check for oiling, turn the crankshaft about 30 degrees and then run the drill for about 1 minute.If no oil shows up at the rockers, turn the crank another 30 degrees and try it again. Continue this until the crank has been rotated 2 full turns. If no oil shows up, check to make sure the rocker shafts are mounted correctly and check to make sure rocker shafts are also in the correct position.
Thanks for all the replies I appreciate it. I spoke to the guy at the shop that did the rebuild today. He told me to bring it back and they would check it out. So it goes back on Monday and we'll see what they come up with. The name of the shop is not mentioned pending the out come of how this goes.
I also had a hard time priming my oil system, just had to find the perfect degree of the cam for the oil holes to line up to allow the oil to flow up to the rockers. it was a very small window, don't forget that the cam turns 1/2 the speed of the crank. and takes good amount of time to fill the shafts. I had an oil pressure gauge on the block, when I got the oil feeds to line up my drill changed sound and pressure also changed a small amount on the gauge.
I gotta remember that one ^^^ Beacause I always do this one ^^^ Listen for the load on the drill to change while rotating the engine.
The shop got it to prime. I got it home and I got it to prime too. I guess I needed a little more patience along with the perfect degree of the crank. I've test ran it and its getting oil.
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