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Topic: Pulling the valves

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Ross

Re: Pulling the valves

#11

Home away from home

That is usually a sign that the valves on those lifters were stuck. Enough hydraulic pressure developed inside the lifter when the engine was turned over that the barrels have have expanded and are now stuck inside the tappet. Grab the barrel of the lifter violently with a pair of vice grips so as to crush it inward, yank it out of the tappet and discard. It was not any more good anyway. Lo siento mucho.

Posted on: 2022/11/21 10:40

Rockabilly

Re: Pulling the valves

#12

Quite a regular

Quote:

JeromeSolberg wrote:
If you can rotate the engine by bumping the starter, that may help.

I can just rotate the engine at this point by hand with a 1" socket on the crankshaft since there is no compression.

Posted on: 2022/11/21 11:14

Catch me on Instagram @rockabillydad or @pastironworks
1951 Packard 300

Rockabilly

Re: Pulling the valves

#13

Quite a regular

Quote:

Ross wrote:
That is usually a sign that the valves on those lifters were stuck. Enough hydraulic pressure developed inside the lifter when the engine was turned over that the barrels have have expanded and are now stuck inside the tappet. Grab the barrel of the lifter violently with a pair of vice grips so as to crush it inward, yank it out of the tappet and discard. It was not any more good anyway. Lo siento mucho.

Hahaha! Here is a man I can relate to. It would make sense since the tapping noise was coming from the front and middle of the engine when I did my long screwdriver stethoscope trick. Each of those locations have a frozen lifter cylinder inside of the tappet. I'll be sure to give that a try. I was going to get a little beat of heat into the tappet as well to see if it helps loosen it up.

Posted on: 2022/11/21 11:15

Catch me on Instagram @rockabillydad or @pastironworks
1951 Packard 300

JeromeSolberg

Re: Pulling the valves

#14

Home away from home

If you had stuck valves, you will at a minimum probably want to ream the valve guides for clearance and/or install new valve guides (which are available). My experience, including the tool I purchased to ream my valve guides and the tool I made to remove/install them is here:

Post-War Valve Guide Removal/Installation, Reaming

Posted on: 2022/11/23 11:29

Rockabilly

Re: Pulling the valves

#15

Quite a regular

Well I was able to get one of the stuck lifters out without much of a fight. It froze with about 1/4” exposed and I was able to get it out with some vice grips and some light hammer taps.

The second one is determined to stay in the motor. There’s maybe a 1/16” exposed and I’ve been messing with it for a couple hours now. Any thoughts?

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