Re: Think I may have messed up...Help!!!!!
[Re: Telvis]
#1593697
03/16/14 10:08 PM
03/16/14 10:08 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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Quote:
All of the rockers are oriented correctly. Already checked that. I primed the oil pump and turned the crank to make sure oil was flowing to both sides through all the passages.
Did you actually see oil coming out of the rockers? You say "rockers are oriented correctly". perhaps its just the way you're saying it, but you do realize that we're asking about the rocker SHAFTS, Not the rockers themselves, right?? The rockers can be on correctly, but if the shafts are installed on the wrong sides, you'll get no oil to the rockers.
It sounds like you've got something in the oil that isn't supposed to be there, though. I'd drain out the oil and re-fill with some good break-in oil then try again. Good luck!
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: Think I may have messed up...Help!!!!!
[Re: mopar_man]
#1593702
03/17/14 09:34 AM
03/17/14 09:34 AM
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Joined: Sep 2013
Posts: 464 KY
Telvis
OP
mopar
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OP
mopar
Joined: Sep 2013
Posts: 464
KY
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The shafts and rockers are installed correctly. I have triple checked at this point. Oil pressure is good and flows to all the rockers. I think the milky color to the oil is condensation. We've had an abnormally cold winter. My garage is unheated until I go in to work in it. Then I crank up two torpedo heaters.
Here's what I did last night:
1. Checked preload. I checked two pushrods with the rocker all the way down then took the rockers off and measured the distance the rod came up. It's difficult to scribe 100% accurately. One was .07 and the other .062. The variance could be human error. I will try it again tonigh to make sure. I really don't think I was on the money with the measurements. One thing I did notice. When I took the rockers off not all the pushrods were sitting at the same height. 2 were a little lower. They weren't bent and all are same length. I figure that's because of the cam love they are sitting on. Correct?
2. I put some 10w-30 in to see if it would make a difference. It might have helped a very small amount but I still have valve train noise. I shut it down after 3 or 4 minutes. If my numbers are right it looks like I need shorter pushrods. Unless I'm missing something.
Thanks for all the advice. Keep it coming if I'm headed the wrong direction.
That's King Weenie to you!
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Re: Think I may have messed up...Help!!!!!
[Re: mcat4321]
#1593704
03/17/14 12:13 PM
03/17/14 12:13 PM
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Joined: Sep 2013
Posts: 464 KY
Telvis
OP
mopar
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OP
mopar
Joined: Sep 2013
Posts: 464
KY
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Nothing is hitting the valve covers... The preload should be between 20 and 40 from what I have read. Mine is 70 but I need to check more thoroughly to confirm. I know it's not oil viscosity, it's not rocker orientation or shaft orientation, it's not a lubrication to the rockers issue and it isn't anything hitting the valve covers. There's no metal in the oil.
Last edited by Telvis; 03/17/14 12:18 PM.
That's King Weenie to you!
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Re: Think I may have messed up...Help!!!!!
[Re: Challenger 1]
#1593706
03/17/14 01:22 PM
03/17/14 01:22 PM
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Joined: Sep 2013
Posts: 464 KY
Telvis
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mopar
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OP
mopar
Joined: Sep 2013
Posts: 464
KY
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I spoke with lunati tech support. He said .025 shorter pushrods but said mine were close and may not be an issue. He said the voodoo cams sometimes cause a bit of valve train noise and suggested I do a full breakin and run it to give everything time to get settled. What do you guys think? Does this sound right? Plus, If I need to go .025 shorter any idea where I get them? Part numbers would be greatly appreciated....
That's King Weenie to you!
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Re: Think I may have messed up...Help!!!!!
[Re: Telvis]
#1593710
03/17/14 03:59 PM
03/17/14 03:59 PM
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Joined: Aug 2003
Posts: 3,107 old westchester
mcat4321
master
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master
Joined: Aug 2003
Posts: 3,107
old westchester
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Quote:
Quote:
i would try shaft shims before new push rods.. IMO too long will not cause noise...
That makes sense. What do you use for shims? Is this something made specifically for this purpose? I'm imagining a washer.
they make kits, i got one from mancini years ago..
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Re: Think I may have messed up...Help!!!!!
[Re: mcat4321]
#1593712
03/17/14 04:48 PM
03/17/14 04:48 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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First find the exact preload. With any particular cyls' lobes on base circle lay one of those 6" thin steel metal rulers, the ones with the clip to go in your shirt pocket across the valve cover rails & wipe the edge of it with a magic marker then before it dries quickly slide it over till it touches a pushrod & makes a thin magic marker ink mark on it. Then loosen the shaft holddown bolts till the pushrod is up all the way but not loose enough to where it is falling sideways (in the same plane in other words) & make another new mark then take the shaft/holddowns/pushrod all the way out & with that steel scale measure the distance between the two marks for your preload. Those shims will change the wipe pattern in addition to the pushrod length needed. You need .020" - .030" preload and an acceptable wipe pattern (as close to the center as possible/not going off the edge). mancini & others have those metal shims, just me I think they're hokey & I prefer soft copper or alum washers. For the cause of the noise you might have inadequate preload or one or more of the lifters might be defective
live every 24 hour block of time like it's your last day on earth
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Re: Think I may have messed up...Help!!!!!
[Re: RapidRobert]
#1593713
03/17/14 09:46 PM
03/17/14 09:46 PM
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Joined: Sep 2013
Posts: 464 KY
Telvis
OP
mopar
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OP
mopar
Joined: Sep 2013
Posts: 464
KY
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I followed the advice of the Lunati rep...reluctantly...Changed the oil again, put in more break in lube and went through the whole 30 minute break in. No issues, no temperature problems, oil pressure good. It lost a bunch of the valve noise but it still has some. Probably 30% of where it was originally. No metal in the oil either...
That's King Weenie to you!
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Re: Think I may have messed up...Help!!!!!
[Re: Telvis]
#1593714
03/18/14 08:42 PM
03/18/14 08:42 PM
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Joined: Sep 2013
Posts: 464 KY
Telvis
OP
mopar
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OP
mopar
Joined: Sep 2013
Posts: 464
KY
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I have been reading everything I can on the 340 valve train and just read that the 340 rockers were different than the 318 rockers. Apparently they have a relief area for bigger valve springs. I didn't realize they were different. I used a set of 318 rockers! Haven't been able to go out and confirm this is my problem but can anyone confirm if this is truly the case? Were the rockers different? Could this be the cause of my noise?
That's King Weenie to you!
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Re: Think I may have messed up...Help!!!!!
[Re: Telvis]
#1593716
03/18/14 09:07 PM
03/18/14 09:07 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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I don't remember any 340-specific stamped steel rockers, sounds like bunk to me.
Anyway, PLENTY of Mopar 318s have been built with camshafts similar to yours in terms of lift, using stock 318 rocker arms. Look at the bottom of your rockers to see if they are conttacting the spring or retainer. I bet they aren't. If no contact, rockers are not the problem.
You did say something that could have a bearing on the situation: Voodoo camshaft.
Comp Cams' HE line and Lunati's Voodoo cams have very aggressive ramps on the lobes. This puts higher stress on the valvetrain, which could cause more noise than a stock-type cam. The CompXE line is especially known for this, but the Voodoo is similar in design and that COULD be the increase in noise that you're getting.
I think you're worrying about nothing. If the lifter has 0.150 travel and you're using about half as preload, I don't see that reducing the preload would lessen noise appreciably. It may put the rocker in a wrong place on the valve tip, you can check for that.
If you want to buy shorter pushrods, first you find out how long yours are and then search out a shelf stock pushrod the right length, or have Smith Brothers or Manton custom build you some. Not impossibly expensive. Or send them a pushrod and say build one 0.025" shorter. But I think the lifters are more forgiving than that.
Have you checked the pushrod sides for contact marks with the intake ports?
R.
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