Ok my poly locks keep backing out.. i dunno whats up with it but i was going to order new set.. what do you guys think....


Crane cams from summit (i have GM 1.6 roller rockers that came with hot cam kit)

http://store.summitracing.com/produc...earchtype=ecat

which is correct i belive its 3.8 or the first one on the page??

 

This problem happens all the time. The easiest way to try to fix it is to adjust the rockers and tighten down the locks as hard as you can. Ignore the torque values. This worked for me after doing it 2 times.

If not, you can pull the rockers and make sure the tops of the studs are absolutly flat. Pull them and sand them with a sanding block with 180 grit paper or higher until they are level and flat. Some people use loctite, but this should only be a last resort.

Ordering new locks probably won't fix the problem, it's more likely related to the studs themselves. Good luck, hope this helps.

 

yea, i doubt its the locks.


do this.


adjust the adjuster so the rocker is 1/4 turn from being where you want it. snug the lock down, then turn the whole thing(by the nut) another 1/4 turn or so. this will really lock it down.

never had one come loose doing it this way! good luck

 

Well guys this did not solve the problem... please if you have any insight please chime in..

 

If you install them per Jordon's instructions I don't see how they can back off Honestly, when you lock them down and then crank the nut over a little more as hard as possible they are *solid*

Maybe you read it wrong. Find zero lash, tighten nut 1/4-1/2 turn (unless running 'R' lifters), tighten lock, tighten nut again as far as you can (~1/4 turn if I remember right).

 

I know whenever i adjust valves i set them and when i tighten the allen screw as tight as possible i then give the adjuster itself a little bit of a turn, you will feel it get a lot tighter. make sure your locks are on the flat part of the rocker not the round that goes on the bottom

 

what about locktite guys? should or shouldnt... i hope to have this fixed befor sunday....

 

I would think blue loctite would be fine.

 

...are you sure the real problem isn't that your lifters are bleeding down on install, or that you're tightening the poly locks without setting lash correctly?

This question might be little more than a TTT... I'm just curious because I know I made the mistake of tightening the locks down and not really paying attention to zero lash which made my comp pro magnums sound like I had dumped a jar of Mexican jumping beans under the valve covers

Hope you can get this solved man

 

are they actually coming loose, as in you can undo them with your fingers, or are the valves just getting out of adjustment? it sounds like the latter. because if you set them the way I told ya no WAY could they back off.

You need to learn to adjust the valve correctly, or fix the problem that is causing the miadjustment (bad lifter, etc)

 

When I first read your post I was kind of thinking along the same lines as the other guys in that the tops of your rocker studs aren't perfectly flat. If it isn't that, then it may be a lifter or something.

Just thought I'd put in my .02 It may not help any, but it surely can't hurt.

---J.Bird