Bad luck or bad lifter(s)? Cup came out

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Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 18th 2017, 5:55 pm

I was breaking in a new cam in a fresh build and to my horror I could hear a loud ticking after a few minutes of running.

Long story short I pull off the intake and found one lifter with the cup sitting sideways next to the pushrod.

What may have caused this? Bad lifter(s)? Maybe I didn't set the preload correctly? These were new comp hydro lifters. Can is new too. Luckily the cam looks fine and the lifter face looks fine too.

Should I get a new lifter? Or try to put it back together?


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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 18th 2017, 6:00 pm


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Re: Bad luck or bad lifter(s)? Cup came out

Post  STR-LGL-70 on February 18th 2017, 6:33 pm

I may be wrong,,, but isn't there supposed to an E clip or some sort of snap ring that holds the lifter together?
If there is, did you find it?
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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 18th 2017, 6:53 pm

These are comp 832 lifters. They have this wire clip not an E clip


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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 18th 2017, 7:09 pm

I need a new intake gasket anyway, might as well order a single lifter too for peace of mind.

Anyone have any idea why this may have happened?

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Re: Bad luck or bad lifter(s)? Cup came out

Post  BOSS 429 on February 18th 2017, 9:13 pm

preload too loose
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Re: Bad luck or bad lifter(s)? Cup came out

Post  rmcomprandy on February 19th 2017, 12:36 am

BOSS 429 wrote:preload too loose

OR, floating the valve or it sticking in the guide.

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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 19th 2017, 1:02 am

rmcomprandy wrote:
BOSS 429 wrote:preload too loose

OR, floating the valve or it sticking in the guide.

I doubt it floated the valve, it never got over 2k.

Thanks for the feedback guys.

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Re: Bad luck or bad lifter(s)? Cup came out

Post  BBFTorino on February 19th 2017, 1:24 am

Pushrod too long on that lifter??

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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 19th 2017, 2:43 pm

BBFTorino wrote:Pushrod too long on that lifter??

So just that valve needs a shorter pushrod?

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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 19th 2017, 2:44 pm

BOSS 429 wrote:preload too loose

Have you seen it happen before or is this a guess?

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Re: Bad luck or bad lifter(s)? Cup came out

Post  69F100 on February 19th 2017, 5:16 pm

I have had that happen to me years ago at the track with my 69 Mustang but I flooted the valves. You might want to check that valve and make sure it not sticking for some reason.
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Re: Bad luck or bad lifter(s)? Cup came out

Post  BOSS 429 on February 19th 2017, 5:40 pm

SLord82 wrote:
BOSS 429 wrote:preload too loose

Have you seen it happen before or is this a guess?



about 30 times, that i can rem, very common, just saw a guy I know do this very thing. I told him to put the lifter back together and set the valves right, nows its been fine for a few weeks. how loose were others?
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Re: Bad luck or bad lifter(s)? Cup came out

Post  BOSS 429 on February 19th 2017, 5:41 pm

stud mounted rocker?
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Re: Bad luck or bad lifter(s)? Cup came out

Post  SLord82 on February 19th 2017, 11:25 pm

BOSS 429 wrote:
SLord82 wrote:
BOSS 429 wrote:preload too loose

Have you seen it happen before or is this a guess?



about 30 times, that i can rem, very common, just saw a guy I know do this very thing. I told him to put the lifter back together and set the valves right, nows its been fine for a few weeks. how loose were others?

Thank you for the feedback.

The other valves were not loose that I noticed, though I accept I may have set one valve incorrectly.

I went ahead and ordered another lifter, it was only 7 bucks and I needed an intake gasket too. I'll recheck the preload on all lifters now.

Adjustable rocker setup, with comp magnum rockers and Manley guide plates on dove heades

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