Check Your Rockers!

RacinDuallie said:
For you guys that are setting the lash on your valves check your rockers- check these pics out and look at what I discovered.....:bang :aiwebs_029:

This design needs some improvement.:dead-horse-fast2:

So if you are checking the valve lash- I suggest to fully remove and disassemble your rockers for inspection. Several of these rockers had binding going on and gouging of the hardened material.......
Click to expand...

:doh: :doh:

I just found same problem in two engines:

1. 2003 CR -250hp and milage 89000
2. 2004 CR -325 with milage 65000

In those two engines almost all rockers were damaged !!!
Do you guy's knew what will couse this?

Whats best upgrade? full roller ? :poke:
 
Mine were scuffed as well at 40k. Always used Mobile syn and changed every 4-5k miles. Not near enough to cause anything to hang but not happy feelings either about it.
 
I found scuffing on mine about 9 months ago. No gouging like yours though.

Nothing that should cause a major problem... like I said... just some minor scuffing.
 
Signature600 said:
Good thing I just checked mine when I machined the rocker's for studs:D Looked good at 135K!

Chris
Click to expand...

Why did you machine them for studs Chris? I have an extra set of complete rockers for a 12v that are in great shape if anyone needs them!
 
I meant I machined the rocker pedestals...but honestly, I couldn't remember how to spell pedestal until about 5 minutes ago:D

The old ARP's were too tall, and would hit the valve cover...the newer ones are shorter, and require you to mill about .100" off the top of the pedestal to give them sufficient thread engagement!

Chris
 
I've seen this now on a 24v and 12v. Haven't seen it on the CRs for some reason?
 
My rockers have the same issue as the ones in the first post, so I bought a used set off of a member here who said they were in good condition, but I go them tonight and they have the scarring on them too. This seems to be a huge problem, does anyone have any ideas about how we could fix this because I do not want to shell out 800-1000 for a set of new stock rockers that will have the same problem in 50k-100k miles.
 
Boost + Spring rate?

I had my 12V down at 170K for the studs and a gasket and all was alright? I have 280k with 60lb springs and 35psi boost every day now so I wonder what kind of shape they are in?
 
I`ve seen lots of those too, not as bad, but every 24v I`ve had apart has it to some degree.

Its not a question, these engines need a high pressure additive of some sort, right from the get go.
 
Anyone came up with a solution for this yet? We just pulled the rockers off the Black mega and they have the same issue.
 
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