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#1503948 Tue Jun 06 2023 07:19 PM
Joined: Dec 2021
Posts: 8
S
'Bolter
I have a 1951 gmc 228 engine. When I was setting the lash I found the top of the milk can type lifter separated from the bottom. It didn’t do any damage but my question is can I use a used one I have laying around or do I need a new one and do I need to replace thrush rod also? If so what brand should I use? Thanks

Stovebolt51 #1503962 Tue Jun 06 2023 08:01 PM
Joined: Feb 2004
Posts: 26,997
H
Kettle Custodian (pot stirrer)
The short answer is NO!!!!!

Unless the lifter has been resurfaced to the correct radius, it will eat the cam lobe in a matter of just a few miles. Those GMC cams are as scarce as a chicken with lips, or an honest politician.

I'm in the process of building a fixture for my lathe that will allow me to resurface the bottom of used lifters, but it's not complete at this time.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
Stovebolt51 #1503975 Tue Jun 06 2023 09:08 PM
Joined: Dec 2018
Posts: 2,586
F
'Bolter
Stovebolt 51 If you can repair your milk can lifter with a top from another one you might save it that way. Once it's back in there if it rotates while running may go ahead a long time. If it's slightly shorter you can adjust some for that.

Hotrod Lincoln #1503976 Tue Jun 06 2023 09:08 PM
Joined: Dec 2021
Posts: 8
S
'Bolter
Thanks I will talk to a machine shop about doing that. How about the push rod?

fixite7 #1503977 Tue Jun 06 2023 09:10 PM
Joined: Dec 2021
Posts: 8
S
'Bolter
Maybe I’m missing something Is the top of the lifter supposed to come off?

Stovebolt51 #1503980 Tue Jun 06 2023 09:23 PM
Joined: Feb 2004
Posts: 26,997
H
Kettle Custodian (pot stirrer)
Nope- - - -it's probably broken. The tulip-shaped top of the lifter where the pushrod fits can break off. Good luck with finding a machinist who has any kind of clue about reconditioning lifters- - - - -there's probably less than a dozen shops nationwide who still perform that procedure. Inspect the pushrod to see if it's still straight, and if there's uneven wear on either end. The cup-shaped top is the most likely part of the pushrod to be damaged by wear on the ball at the end of the rocker arm adjusting screw.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
Stovebolt51 #1503983 Tue Jun 06 2023 09:30 PM
Joined: Dec 2018
Posts: 2,586
F
'Bolter
Stovebolt51 The top of the lifter should be permanently pressed in ,changing the pushrod should be no problem at all. Use an accurate straight edge to see if your lifter has a crown on the bottom,see if the cam lobe looks good. Then once it's back in there should rotate like the others.

Stovebolt51 #1503984 Tue Jun 06 2023 09:32 PM
Joined: Dec 2021
Posts: 8
S
'Bolter
Thank you for the reply’s

Stovebolt51 #1503989 Tue Jun 06 2023 10:19 PM
Joined: Feb 2004
Posts: 26,997
H
Kettle Custodian (pot stirrer)
New lifters are available for single purchase- - - - -just do a 20 minute fast idle run-in with ZDDP in the oil like you were breaking in a new camshaft.

www.ebay.com/itm/185771692929? [ebay.com]

Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
Hotrod Lincoln #1503990 Tue Jun 06 2023 10:28 PM
Joined: Dec 2021
Posts: 8
S
'Bolter
Thanks Jerry I will do that 🍻

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