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1968GMC 08-04-2007 07:46 PM

noisy lifter
 
I have a bad lifter and I was wondering if i can just change the one or do l have to change them all. Also someone told me l should change all the push rods, is that necessary?
M

cdowns 08-04-2007 07:50 PM

Re: noisy lifter
 
before takin apart or changing any thing add a pint of marvelmystery oil to your crankcase

68gmsee 08-04-2007 08:35 PM

Re: noisy lifter
 
If the additive doesn't break it loose, and you're sure that the cause may be a collapsed lifter, I see no reason why you can't replace just the one. I've done that before...

On the other hand, if your engine is old and your lifters are gummed up, then I agree that you should go with the set. You'll have the intake off anyway. As far as the rods, the only time I replaced them is when one of them was bent. It's really your call...

Thealien 08-04-2007 09:08 PM

Re: noisy lifter
 
Marvel mystery oil didn't help mine. Don't have the time or money to tear into it right now (trying to fix 6 other things right now). I am just going to adjust it like a solid and quiet it down a bit. A good mechanic I use recomended this to hold me over.

Frizzle Fry 08-04-2007 10:31 PM

Re: noisy lifter
 
I had this problem. Replaced all the lifters and it still made noise. Turned out to be a scored lifter bore :eek: The fix was to build a 476 for it ;)

1968GMC 08-04-2007 10:36 PM

Re: noisy lifter
 
l replaced the cam and lifters 4 years ago with a RV cam from edelbrock.

dave3156 08-05-2007 07:10 AM

Re: noisy lifter
 
I also had a collasped lifter. Replaced the one lifter and everything was fine. Don't run it too long collasped.

Billla 08-05-2007 09:39 AM

Re: noisy lifter
 
New lifter on a used cam can be a bad combo - the more agressive finish on the new cam can flatten a cam lobe. Not an absolute no - but it's a risk.

Be SURE it's a bad lifter and not a flat lobe or bent pushrod.

I'm not RECOMMENDING this, but the times I have had to replace a lifter, I've chucked it up in a lathe and taken a little emery cloth soaked in solvent to the foot LIGHTLY just to take it down a notch.


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