lifters

[Bill M]

I needed to replace a couple hydraulic lifters so i bought a couple from Summit Racing.

Soaking them in oil and i noticed the new ones are stiffer than the others.

Is this a problem? Should i change the others also so that the spring tension match?

Engine is a mild build 383 for the street.

 

[vintage chromoly]

Replace them all

 

[Demonic]

Yeah, I'd be wanting a matched set. What happened to the first two? "Needed to replace" why?

 

[Bill M]

engine was rebuilt 10 years ago and put in the corner until the project was ready, never started.

3 valves were partially open and the lifter partially collapsed, for ten years.

 

[wyrmrider]

those open springs are also now suspect
matched lifters?
you could rebuild/ clean those lifters- nothing there to go wrong

 

[biomedtechguy]

I replaced all 16. Lifters, springs, locks and retainers. Went w/all CompCams stuff. Lubed the entire valvetrain like I was breaking in a new cam and ran between 2,200 and 2,600 RPMs for 20 minutes.
VERY happy with the results.

 

[Demonic]

engine was rebuilt 10 years ago and put in the corner until the project was ready, never started.
3 valves were partially open and the lifter partially collapsed, for ten years.

Well, as far as break in then, they'll likely be ok. Still have to do a break in cycle. Sounds like you have disassembled them? If they're permanently collapsed, I'd still want a matching set.

 

[Bill M]

Well, as far as break in then, they'll likely be ok. Still have to do a break in cycle. Sounds like you have disassembled them? If they're permanently collapsed, I'd still want a matching set.

I replaced them all. Fed Ex just backed up the driveway.