Rocker Cover Screw Retention

[Greg Ellis]

11 hours ago, PT20J said:

Why do screws come loose? Vibration coupled with insufficient torque. How can you get insufficient torque? Give the screws a twist every so often. The gasket will compress a little more each time until eventually it looses resiliency. Same thing with hose clamps. Sometimes it is best to leave well enough alone. 

Skip

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I know some will have this on immediate mental recall....so what is the proper torque for Lycoming Rocker Box screws?

[N201MKTurbo]

34 minutes ago, 0TreeLemur said:

You're saying that instead of a giving MS participants easy access to non-controversial information, let's make them hunt for it or start a new thread.  I don't get it.

I can see that.

[PT20J]

1 hour ago, Greg Ellis said:

I know some will have this on immediate mental recall....so what is the proper torque for Lycoming Rocker Box screws?

[Greg Ellis]

13 minutes ago, PT20J said:

Thank you.

[N201MKTurbo]

2 hours ago, Greg Ellis said:

I know some will have this on immediate mental recall....so what is the proper torque for Lycoming Rocker Box screws?

As tight as you can get it with an oily plastic screwdriver.

 

[RLCarter]

44 minutes ago, N201MKTurbo said:

As tight as you can get it with an oily plastic screwdriver.

 

Are we talking white knuckle or break wind tight?

[N201MKTurbo]

15 minutes ago, RLCarter said:

Are we talking white knuckle or break wind tight?

Just till it stops making the grindy sound.

[MikeOH]

On 4/23/2021 at 8:16 AM, PT20J said:

Hmm, I've never had a problem with rocker box leaks in over three years of ownership, but I now think I know why others do....35 in-lbs is just under 3 ft-lbs, which is NOT much!  I strongly suspect most are waaay overtightened and the cover/gasket distorts and a leak ensues. Followed by MORE tightening to 'stop' the leak.

[MikeOH]

7 minutes ago, GEE-BEE said:

Silicone with fiberglass 

25/27 inch Pounds

The key is fiberglass 

it’s three times the cost of non reinforced silicone.

 

GB

@GEE-BEE

I have been very happy with your baffle kit I bought three years ago. Part of what you sent was a set of blue silicone rocker-box gaskets...which I've not yet needed to install!  Would they be with the fiberglass? (Not sure you've changed materials since then)