Garys1969RR
Well-Known Member
My son is ordering a Voodoo solid roller, 40230732LK. 243/249 and .578/.585 int/ex. Why, do you have one for sale?
Valve lash keeps getting loose
- Thread starter Garys1969RR
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lewtot184
Well-Known Member
i don't have any roller stuff. some new flat tappet stuff.
when going to the roller make sure to get the end play set-up.
Garys1969RR
Well-Known Member
Yes, I plan to set the end play, and degree in the cam, using the ICL method. The ICL on the voodoo is listed at 106. So I assume that means that at 106 crankshaft degrees past TDC, the cam lobe will be at the center of it's maximum open lift? I've never degreed in a cam before, so I'm open to suggestions on how to do it.
Garys1969RR
Well-Known Member
Good idea! I drained the oil, put a magnet in there, and there are some fine particles of metal in there. Not a whole lot but enough to concern me. I will put new oil in, run it a few minutes, then change the oil and filter again. Hopefully that will clear all the iron grit out. I also may try to insert a small elongated high strength magnet into the oil drain hole. That will catch and hold any particles that may pass by.
CHARGERSTEVEN
Well-Known Member
What you got in new flat tappet for sale
IQ52
Well-Known Member
Good idea, keep replacing the cams without tearing down and cleaning the engine and we can have another saga like this one................
http://www.forbbodiesonly.com/mopar...-had-enough-of-this-440-mystery-motor.122864/
I'm sure the roller lifer bearings will love those little metal flakes........
miller
Well-Known Member
Hey, Gary...since your pulling the cam...just wondering what your cam bearings look like? Got any embedded metal flakes on 'em?
Yeah, I know...I'm a pain in the rear.
Yeah, I know...I'm a pain in the rear.
I run a large 4" magnet duct taped to the outside of the back of the pan under the diaper (it's an aluminum pan). Started doing this when it broke a valve spring. On tear down and inspection you can "read" the shape of the magnet on the inside of the pan. Its amazing how many little pieces it picks up.
Doug
Doug
Garys1969RR
Well-Known Member
Cam bearin
Cam bearigs look fine, no signs of wear or metal embedded in there. I only ran it for about a mile after the cam lobe started to go. Ran a magnet around in the oil I drained out, and can't find any metal particles sticking to it. I found a few very small metal particles in the oil yesterday.
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Garys1969RR
Well-Known Member
Here are some pics of the offending lobe and lifter. As can be seen, the bad lobe has begun to wear down, but still has some metal left, and the lifter is starting to become dished.
Garys1969RR
Well-Known Member
In this picture you can see the base circle on the lobe second to the left, has some pit marks on it. This is prob due to a manufacturing defect. It looks like it may have been that way for awhile. Not new damage.
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What brand cam is that?
I don't like how the lobes aren't chamfered or deburred. Those chunks along the edge can come loose and get between the lifter and lobe and there it goes.
I don't like how the lobes aren't chamfered or deburred. Those chunks along the edge can come loose and get between the lifter and lobe and there it goes.
Garys1969RR
Well-Known Member
Not sure of the brand, I will take a closer look at the cam tonight and see if I can see any I D numbers on there. Definitely NOT a purple shaft.
miller
Well-Known Member
Ahh, thanks Gary!
That explains why there's not much 'loose' metal floating around. Just got shifted! My guess would be lousy manufacturing, surface treatment. Sad state when lifters bought are pieces of crap out of the box.
You lucked out on that one!!! Agree...you'll get by with just changing out parts, and go for it.
That explains why there's not much 'loose' metal floating around. Just got shifted! My guess would be lousy manufacturing, surface treatment. Sad state when lifters bought are pieces of crap out of the box.
You lucked out on that one!!! Agree...you'll get by with just changing out parts, and go for it.
Garys1969RR
Well-Known Member
Yea the oil is discolored, but not bad. Can't find any metal fragments or debris anywhere. And there is no ID on the cam other than a number on the back of the rear journal. I think it may be an off brand. Here is a close up of the second lobe to the left of the one that wore down.
miller
Well-Known Member
Thanks for the heads-up, Gary! Interesting, and informative.
Don't suppose any idea on the tappet brand...it's what gave up, at least the one. Cam looks like it was holding up pretty good, considering.
Don't suppose any idea on the tappet brand...it's what gave up, at least the one. Cam looks like it was holding up pretty good, considering.
IQ52
Well-Known Member
If I threw a teaspoon full of metal grindings from the porting bench into an engine everyone would throw a fit. But a teaspoon full of cam lobe and lifter inside an engine is no problem? Slap in that new cam and go for it.
Garys1969RR
Well-Known Member
Don't know the tappet brand, and not sure if the tappet or lobe started to go first. The lobe must have began to wear, lost some lift, which opened up the valve lash. That's when I noticed the tappet sound. So I checked valve lift again, and it was at .340" where it had been .520 before. So losing .180 lift at valve translates into losing .120" at lobe/tappet. 1.5 to 1 Rockers. Both lobe and tappet are worn down some, so who knows which one started to go first? I AM putting a magnetic drain plug in the motor, when I re assemble it, just to see if anything shows up. No cam bearing wear or noticeable grooves, and I can't find any metal particles anywhere.
Garys1969RR
Well-Known Member
I agree, metal particles are damaging to an engine. I have the engine partially disassembled, and have not found any signs of metal particles. I've checked the lifter valley closely, and nothing there. The only thing I've found is slightly darkened oil. I'm going to re check the oil I drained out and see if I can find anything. I appreciate your concern.
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