Oil Pump Sheild

[BashawT]

I dropped my oil pan to inspect and clean out the sludge in the pan. I took apart the oil pump and cleaned it up and replaced the gaskets. I purchased an oil pump shield to put on the pump. However, the service bulletins says to not install the oil pump shield without installing the new oil pan. page 576.

My question is should I leave it off or have people used the shield with the old style oil pan?

Thanks!

[columbiA]

Heed the Service Bulletins.

[H. L. Chauvin]

Humble Opinion:

If it fits, does not rattle, & causes no obstruction in installing the oil pan, I can see no problem using it.

Just rebuilt a 1930 Model A engine -- had a Model B shield from 50 years ago & re-used it on the rebuilt 1930 Model A engine with no problems --- had used it before.

Others may have different opinions, but after looking at it, seeing how it spreads oil into the upper drip pan, it just appeared to be an improvement in crankcase lubrication.

[John LaVoy]

We installed the shield on our last engine build and used the earlier pan with out a problem.

[H. L. Chauvin]

Also, might add to clarify the phrase in #3 above -- "had used it before", whereby "before" means used it for 15 years with no problem.

[BashawT]

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Thanks for the information guys!

[glenn in camino]

My B engine makes a different noise and the oil pressure goes way down when I make a right turn. I probably need an oil pump shield, but where do I get one? It's been doing that for 15 years and 20'000+ miles. Should I be worried?

[Terry, NJ]

Not to start up an old debate, but I'm doing an engine too. I got to the oil pump and the screen was clogged with sludge! Literally clogged! I don't see how any oil got past that screen. It did, though not nearly enough for proper lubrication. I hate to say , but that's a result of using non detergent oil. Now I'll let the matter drop. I just made the point, I'm not trying to open up another endless debate.
Terry

[CarlG]

Originally Posted by glenn in camino

... I probably need an oil pump shield, but where do I get one? ...

Snyders Part # A-6631

[pat in Santa Cruz]

Originally Posted by glenn in camino

My B engine makes a different noise and the oil pressure goes way down when I make a right turn. I probably need an oil pump shield, but where do I get one? It's been doing that for 15 years and 20'000+ miles. Should I be worried?

for some reason the pump is cavitating, probably due to the oil being forced away from the pump by centrifugal force. I have a modified V8 pump with full pressure to the crank shaft in one of my A engines which was built as a speedster engine. It does that low pressure thing on right turns, but the reason is that the modified pump sucks up oil so fast and the oil intake port is close to the pan wall, so when the oil was forced to the opposite side of the pan, the pump sucks in air as the oil level lowers. The solution was to fill it with 6 quarts. I cannot see how a stock pump would do that, but maybe you have a pump that has been modified. In any case, as unnerving as it is, it does not harm the bearings, as even with low pressure they still get oil and the interval is very short.