forgot to mark pushrods and lifters.....

fivemustangs

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Dec 22, 2007

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Bar Harbor, Maine

Mar 28, 2011

#1

• Mar 28, 2011

• #1

Ok So I was doing some work on my wifes 91 GT last week and I replaced the cam and intake and some other bolts on, and in the process of installing a TFS stage 1 I didnt mark which lifters and pushrods came from which original spot and now there is a valvetrain ticking during idle and reving. I need to pull the valve covers off and make sure its not a loose rocker or pushrod kinked off to the side, but if everything is tight, how would I go about fixing this problem? replace lifters, pushrods, both? Also should I tork the rockers or just bolt them tight? I still have stock E7's for now. Thanks!

 

Noobz347

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#2

• Mar 28, 2011

• #2

Adjust the rockers correctly and what little bit of tap-tap-tap that remains will work it's way out as the parts wear into their new positions.

I would assume that you'd have looked at each of the push-rods as you pulled them out to see if any were visibly cone shaped, yes? If so, no worries.

I would hazard to guess that if you have a REALLY noticable tick, that you probably have a rocker that is out of adjustment (first guess) or a lifter that's not pumping up and requires replacement (2nd guess).

 

fivemustangs

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Mar 28, 2011

#3

• Mar 28, 2011

• #3

I doubled checked the lifters and they all spun free and slid into there boars easly when installing, but now that I think about it there was a few rocker arms that were a tad bit loose after they were all tightned down. Should there be ANY play in the rocker arm to pushrod when fully tightned? I have a set of pushrods on order from napa just incase, I am going to pull the covers off tonight and check the rods again. But after some more searching I think I saw 18-20 lbs for the stock rockers?

 

Noobz347

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#4

• Mar 28, 2011

• #4

I realize that methods for adjusting rockers may be a little different from person to person but I'll tell ya what I do:

Once I get both the intake and exhaust valves closed, I rotate the pushrod until I begine to feel friction. It'll still spin freely but you'll feel that 'scraping' feeling indicating that seated. Then I tighten down the locking feature.


It sounds like maybe you've got yours adjusted very loose?

 

fivemustangs

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Bar Harbor, Maine

Mar 28, 2011

#5

• Mar 28, 2011

• #5

Well I just thought it was as easy as put the pushrods back in and tighten the ***** out of the rocker bolt....but im guess I am wrong. i did not rotate the crank/cam by hand before or after I tightened them all down. Should I give the crank a few rotations and then retighten?

 

stykthyn

I want to measure mine. It doesn't look that tall.

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Mar 28, 2011

#6

• Mar 28, 2011

• #6

Tighten to 22ftlbs. Any more than that and you will force the valves open. If some are loose they will work themselves into position after the motor is spun a few times.