Valve guidance

Moparbuster · Apr 16, 2021

I need some guidance on adjusting my valves.PLEASE!!!! It's already in car and has around 2500 miles on it .11to 1compression .40 over 440 Howard's hydraulic roller comp cams ultra roller rockers they are excessively noisy what is proper side clearance on rockers and procedure to adjust valves .

PurpleBeeper · Apr 16, 2021

The backyard mechanic way is to look up the valve adjustment "chart" (look online for a picture of an old Direct Connection decal). You'll need to have degrees marked on your harmonic balancer, or at the very least, 0, 90, 180 and 270 degrees marked off. Rotate engine per "chart". Adjust one intake valve and one exhaust valve as indicated on chart. You back off the adjustment screw and use the other hand to "twirl" the pushrod as you slowly tighten the adjustment screw. This lets you feel exactly when the adjustment (valve lash) is at "zero" and you tighten the screw a 1/2 turn extra and secure the lock nut. Rotate the engine 90 degrees, adjust the next one intake and one exhaust valve as indicated on the chart. Repeat

440Coronet500 · Apr 16, 2021

Try this. 65'

Moparbuster · Apr 16, 2021

Thanks replies

66Satellite47 · Apr 17, 2021

After all these years, I still use the Mopar DC chart. As far as side clearance, all depends on how good the alignment is and the type of spacer you have.

PRHeads · Apr 17, 2021

Sure....... it’s worth the time & effort to go thru the rocker adjustments to make sure all is correct there........ but be prepared to find nothing wrong, and that you may have a combination of parts that’s just noisy.

Do a google search for
“Hydraulic roller lifter noise”, and you’ll get tons of hits.
Many times a hyd roller set up doesn’t end up being all roses and unicorns.

65hemi · Apr 17, 2021

When the exhaust valve starts to open, adjust the intake. When the intake valve is almost finished closing, adjust the exhaust. Both of these relate to the valves on the individual cylinder of course. This procedure ensures that the lifter is on the heel of the lobe for adjustment.

Challenger340 · Apr 18, 2021

65hemi said:
When the exhaust valve starts to open, adjust the intake. When the intake valve is almost finished closing, adjust the exhaust. Both of these relate to the valves on the individual cylinder of course. This procedure ensures that the lifter is on the heel of the lobe for adjustment.

YEP !

beanhead · Apr 18, 2021

E-O-I-C method all the way for me too (as per post #7).
On the rocker side clearance, I like .015-.020" per pair with aluminum rockers. Steel you can go a hair less (maybe .010 Minimum) but always keep in mind, a little loose is better than a little tight....a few thou here isn't likely to be the difference between quiet and clackity, but it can be the difference between things living or a failure.
And, save yourself some hassle and getcha a remote starter switch (if you don't already). For as helpful and inexpensive as they are (heck you can make one) I'm amazed how many car guys don't have one in the tool box.
And as PRHeads alluded to...there's a good chance it'll still be noisy, it doesn't necessarily mean there's anything wrong.

Valve guidance

Moparbuster

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PurpleBeeper

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440Coronet500

Well-Known Member

Moparbuster

Active Member

66Satellite47

Well-Known Member

PRHeads

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65hemi

Well-Known Member

Challenger340

Well-Known Member

beanhead

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