Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

I'm still trying to solve my problem with a noisy lifter in my '51 Lincoln flathead. Is there a good reliable chemical I can add? The noise appears only after the engine runs and warms. When cold, it's quiet and runs great. I have run lots of Mystery Oil in the crankcase, but no help. I'm now running fresh 40W non detergent oil. :(

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Good stuff:

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

might need to adjust one valve. put a vacuum gauge on the engine and see if there is any variation between cold and hot readings. I had an adjustable lifter that would self adjust, fixed that one and now I have another one that does it when it is hot

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

PB Blaster trans valve fix, if you can find it.


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Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

I wish the barn had the "Like" feature like the Hamb.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

You can, scroll back to the OP #1 on the red bar select Rate this thread.
Cast your vote.
Bruce

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

I get that Bruce and thank you, I was thinking more about agreeing with an answer. Might eliminate a lot of double posts. Not that I'm saying anything is wrong with it now.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

your first mistake is running non detergent oil in an engine with hydraulic lifters, detergent oil removes gunk and sludge built up in an engine. try running 4 or 5 oz of mmo in our gas. it could be the valve sticking in the guide

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

"Like"

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Putting a chemical in to quiet a noisy lifter seems more like what would be done to quiet a hydraulic lifter that was collapsed or sticking. In my somewhat limited experience with these flatheads a noisy one most would most likely need to be adjusted to quiet it down.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

The Lincoln is indeed running hydraulic lifters, hence the op's question.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

!st step is to get that non-detergent oil out of there! That stuff is only good for oiling bicycle chains. Hydraulic lifters caused a lot of trouble before high detergent oil became available. "Collapsed" lifters were common. Sludge and varnish deposits caused the little check balls to hang up or not seat properly, or gummed up the internal plungers. Rislone was one product offered back then that seemed to work.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Yes, indeed RISLONE is what worked for me when a noisy hydraulic lifter problem needed attention.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Does a '51 flathead have hydraulic lifters?........ Mark

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Yes. '51 Lincoln flathead has hydraulic lifters.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Ok. Thanks

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Do a fresh oil change with detergent oil minus 1 quart. Add a full quart of Marvel Mystery Oil to replace the one omitted in the oil change. Run the car for 100 to 200 miles and do another oil change. This should cure the noisy lifter. If not, run the car another hundred miles or so and repeat the MMO procedure. Ken

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

Hydraulic tappets generally have a little ball bearing in them that acts as a one way valve. If the seat or ball has deteriorated to the point that it allows excessive leak down, the tappet assembly should be replaced. Crud can get in there and cause leakage too but sometimes you have to remove the lifter and clean the crud out manually. A leak down test can be performed before considering whether to put it back in there. Sometimes a unit just has bad clearances in the little piston or its bore. This can also cause excessive leak down. If that's the case, the unit would have to be replaced.

Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead
 

It is hard to believe that anyone would run a non-detergent oil in any engine in this day and age.
I have ran nothing but detergent oil, either Union Oil Royal Triton or Castorl GTX 20/50 in my 59AB engine since 1954. The only reason I switched from Royal Triton was because Union Oil quit making it.
I use the oil recommended by the vehicle manufacture in my newer, modern vehicles.