Blessyouboys
Senior Member
I agree with you, FWIW.
I am curious as to what Tom Wesenberg's experience is, and why he thinks this failure is due to a lack of ZDDP.
Poor Quality Replacement Parts
- Thread starter TinCup
- Start date
I am curious as to what Tom Wesenberg's experience is, and why he thinks this failure is due to a lack of ZDDP.
1931 flamingo
Well-known member
Based on past postings on think the multi locks are the way to go. Engine is out on a stand, manifolds off, much easier to install and adj than when in the car. JMO
Paul in CT
Paul in CT
Tom Wesenberg
Well-known member
No, I was just kidding.
I just wanted to make it known that a can of cam lube would be good to use with a new cam and lifters
MikeK
Well-known member
If you look at the contact base of the used lifters you will see a circular wear pattern that is smaller in diameter than the pad. The steeper/ faster the cam lift acceleration/ deceleration ramps are, and the smaller the cam base circle is, the larger that contact circle becomes. The contact circle is not a function of total lift.
The double lock type lifters (lock nut) hold their setting but have a smaller face than the single locks. The double locks are OK for a stock cam, but may be too small for performance grinds. The main problem with the singles is they loose their lock stiffness because the threads hammer and burnish themselves into a nice slick fit. On the last set of singles I used, I disassembled and degreased them, then sandblasted both the internal and external threads. You may want to tighten the interference too, then reassemble with a drop of engine oil.
The second lifter problem is that the face on both the lift pad and the adjustment bolt are not always correct. Both should have a fine-ground appearance with an almost imperceptible crown. The bolts often have a '***' from a lathe facing operation that must be removed. Reworking both ends with a fine belt on a expanding rubber wheel may be necessary. I use a 400 grit 3M Cubitron Trizact belt on a 12" wheel with coolant for that kind of stuff. Takes a practiced touch.
Use an EP lithium + MoS2 (Moly) lube on cam/ lifter assembly.
rockingchair
Junior Member
Cam lube is a good idea on break-in. Also instructions on performance cams recommend staring the engine, immediatly rev to at least 1500 rpm and hold that rpm for a few minutes.
Rotella oil and Rotella T don't have zddp any more. If you want oil with ZDDP in it go to your local motercycle shop!
Rotella oil and Rotella T don't have zddp any more. If you want oil with ZDDP in it go to your local motercycle shop!