Lets talk rocker arms

[moper]

It's hard to see in that pic... but the radius where the lifter actually contacts is the same on both and that area is nowhere near the edge of the one on the left.

 

[1wild&crazyguy]

It's hard to see in that pic... but the radius where the lifter actually contacts is the same on both and that area is nowhere near the edge of the one on the left.

It's hard to see?
then why would you make that kind of a statement not sure of what you're seeing?

The old tip width/diameter is larger than the new, and the new ones have much more radius.

 

[w2360Duster]

You know what?
:cheers:Thanks man, thats what has happened on no.1 exhaust lifter.

I looked and noticed that no.1 exh was loose again, so adjusted it and then saw I had maybe 1 thread on top showing as the rest sat with about 2, when pulled the rocker shaft and yanked the lifter bingo...lifter boring.
I compared it to a mock up MP solid lifter I have for degreeing cams, I might just swap cups.
Thanks again and sorry if I doubted your thought on this, it's just.. well thats some weird **** right there and I never have had it happen while running even more psi than these springs.

I hoped everyone is reading this:read2:
this is called learning right here.:cheers:

Glad i could help ! Cheers :burnout:

 

[Mad Dart]

heres the difference between new and old, same part #.

Left-old Right-new

the ball on the right is the fix to my lifter boring issue.

That looks like it will fix the boring problem for sure!!

 

[1wild&crazyguy]

That looks like it will fix the boring problem for sure!!

I just buttoned it up and fired it up and man...so much quieter now.

It's been days....I'm so driving it tomorrow after work.:burnout:

 

[moper]

I'm glad you fixed it...lol.

 

[1wild&crazyguy]

lets get this straight....

I have a geometry problem, not major but just a hair off center on the valve tip, just a hair.

The push rod length at this time happens to be good in relation to adjuster threads shown, as in no extreme angle to damage adjusters and or contact the rocker itself, or bore out lifter cups.

The lifter boring was due to the shtty push rod ball, or lack of ball I should say.

when I took a closer look at all the old push rods, I found the offending one had a sharper edge and even less radius than most of the others, though all were sketchy.


The final outcome is I no longer have to readjust the rockers to make up for the push rods boring out the lifters, it's quiter running, and all though I'm losing a lil lift from the advertised, nothing destructive or worth pulling the heads and buying/grinding valves over.

I fixed what and all I was looking to fix at this time.

btw I think I will measure the lobe and see if it matches the cam card before assuming how much lift I'm actually losing.