Windsor Squeeeeeek
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Beer Fridge Finder
Joined: Apr 2003
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From: Savannah, GA
Windsor Squeeeeeek
Ok - I built a 1984 351 Windsor. It's .030 over and has a crane 87 degree cam, .50 lift, hydraulic lifters, roller tipped rockers, guide plates. The engine has run for about I'd say an hour or so. No problems. Then it developed a high pitched knock that sounded like it was coming from the top of the engine. Ok, I say to myself, I got a bad lifter out of the box. So I replace them all. Still have a knock, but it isn't there right away - the engine has to run for about 30 seconds before it will knock. AND! It has developed a squeek, a chirp or chatter if you will, that also sounds like it's coming from the top. Could the cam be incorrectly installed? Yes, I used assembly lube. ANY ideas?
Hotshot
Joined: Jul 2002
Posts: 14,285
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From: Bend,OR
Windsor Squeeeeeek
with the valve covers off, and turning the motor over but not letting it start, does the top of the motor seem to be getting enough oil? also did you refill your tranny with fluid after installing this new motor?
late
late
Lead Driver
Joined: Sep 2002
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From: Gateway to the West
Windsor Squeeeeeek
Not sure about the squeak but are all sixteen lifters and pushrods oiling. Lifter tick is most commonly low oil pressure or lack of oil all together. Symptoms would point to poor oil pressure.
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Beer Fridge Finder
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From: Savannah, GA
Windsor Squeeeeeek
I should have mentioned that I have 60 PSI of oil pressure with a new high volume pump. When I took it apart the second time, I did make sure that all the drain holes were clear in the heads and going to the cam bearings.
Perhaps this is the time to put Slick 50's money where it's mouth is?
Perhaps this is the time to put Slick 50's money where it's mouth is?
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Joined: May 2002
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From: Mountain State
Windsor Squeeeeeek
Hi, first don't add any additives to the oil until the engine is broken in. You want it to break in. The only time I add anything is when I'm selling a dog, and it needs a few quarts of STP liberally applied to the engine and trans and axles.
A squeak dosn't sound like lifters going dry, those are real ticks and taps. A squeak or squeal sounds more like a bearing or dry seal. Or remotely a broken ring. A knock sounds like a loose or broken or bent rod on the crank. And if you have run it long enough there could be some rather interesting damage.
Did you prime the oil system??
Next, you might consider pulling the engine and doing a tear down. I just did one of those when my Poncho 400 engine did not turn completely by hand and made a tap noise. The teardown showed the oil pump drive shaft had slipped off while installing the engine. If we had started that baby up, it would have been a catastrophic failure. As it is, we only had to spend a few $$ for some gaskets.
Bruce (Big Red Bronco with a dead fuel pump)
A squeak dosn't sound like lifters going dry, those are real ticks and taps. A squeak or squeal sounds more like a bearing or dry seal. Or remotely a broken ring. A knock sounds like a loose or broken or bent rod on the crank. And if you have run it long enough there could be some rather interesting damage.
Did you prime the oil system??
Next, you might consider pulling the engine and doing a tear down. I just did one of those when my Poncho 400 engine did not turn completely by hand and made a tap noise. The teardown showed the oil pump drive shaft had slipped off while installing the engine. If we had started that baby up, it would have been a catastrophic failure. As it is, we only had to spend a few $$ for some gaskets.
Bruce (Big Red Bronco with a dead fuel pump)
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Beer Fridge Finder
Joined: Apr 2003
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From: Savannah, GA
Windsor Squeeeeeek
Thanks, Bruce. I was seriously kidding about the additive - I wouldn't run that stuff if my life depended on it. I know the answer - take the engine back down - but I was hoping that if I let the engine sit for a couple of days it would fix itself. Guess that's not going to happen. I mean, it IS a Ford! 
)
The noise is definately not a rod knock, my buddy has a Blazer so I know what those sound like. It is in the top of the engine and it is higher pitched than that.
Something else I just thought of - when I replaced the lifters for the second time, they gave me the wrong length push rods, and in an effort to save time I mounted the intake manifold. Once I got the right push rods, I just slid them in the heads - checking each one to make sure I could move it up and down just a little so I knew they were seated. ONE push rod I couldn't get to move - and with a the help of this neat little flexible scope thing we were able to see that it was indeed seated in the lifter, but it wouldn't move. So I am thinking that once again I got a bad lifter out of the box... but twice? Do I just never go to NAPA again?
P.S. I am sick of draining the coolant and oil. <grin> Know any tricks to change lifters without removing the intake?
I know the answer - take the engine back down - but I was hoping that if I let the engine sit for a couple of days it would fix itself. Guess that's not going to happen. I mean, it IS a Ford! ) The noise is definately not a rod knock, my buddy has a Blazer so I know what those sound like. It is in the top of the engine and it is higher pitched than that.
Something else I just thought of - when I replaced the lifters for the second time, they gave me the wrong length push rods, and in an effort to save time I mounted the intake manifold. Once I got the right push rods, I just slid them in the heads - checking each one to make sure I could move it up and down just a little so I knew they were seated. ONE push rod I couldn't get to move - and with a the help of this neat little flexible scope thing we were able to see that it was indeed seated in the lifter, but it wouldn't move. So I am thinking that once again I got a bad lifter out of the box... but twice? Do I just never go to NAPA again?
P.S. I am sick of draining the coolant and oil. <grin> Know any tricks to change lifters without removing the intake?
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Beer Fridge Finder
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From: Savannah, GA
Windsor Squeeeeeek
Discovered last night that there is no oil coming up the push rods yet I have 60 PSI of oil pressure! What the heck?
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Senior User
Joined: May 2002
Posts: 122
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From: Mountain State
Windsor Squeeeeeek
Hi Mike, basically you have no oil flow. First guess is the bearings, cam, rods and mains or a combo, are in wrong, so there is no return flow which would be why you are seeing 60# instead of 40-45#. Next is there is a clog somewhere, but, if it were a clog in an oil gallery, you would see some oil squirting out somewhere, just not beyond where a clog would be.
The oil flow goes from the filter up the galleries and to the lifters and bearings and then down to the pan/pump. Because the pressure switch is in the flow, the problem should be the return, ie, the oil cannot get up and through the bearings.
Bruce(Big Red Bronco, have to pull and reinstalling the heads on a mini-blazer tomorrow, youck)
The oil flow goes from the filter up the galleries and to the lifters and bearings and then down to the pan/pump. Because the pressure switch is in the flow, the problem should be the return, ie, the oil cannot get up and through the bearings.
Bruce(Big Red Bronco, have to pull and reinstalling the heads on a mini-blazer tomorrow, youck)
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