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  #21  
Old 01-11-2018, 08:23 PM
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Originally Posted by Saville View Post
Sam I've already made arrangements with the FBO chief mechanic to bring the plane to his hangar next week so he can pull, check, clean re-install the plugs.

I already knew I don't know enough to do it myself. People who know me know I'm extremely...and I mean EXTREMELY careful and take no chances. The comment about the Briggs was to illustrate I have practically zero knowledge about this. But more importantly, that I KNOW I have practically zero knowledge about this.

I'm hoping I can get basic info from the mechanic as well as tips, and part numbers. Hopefully he will let me install one while he watches.

You should have noticed the questions I had - such as which plug and which crush gasket. That should tell you that I already know that I don't know the basics.

So you can relax. No need to be spooked.

But just remember that you have to start somewhere. And what my post was intended to to do was lay out the sorts of questions a newbie has to contend with in order to learn.
Sounds like a good plan. Remember the old adage taught to new docs in med school: Watch one, Learn one, Do one.

And read and follow the manufacturer's published maintenance procedures!
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  #22  
Old 01-11-2018, 08:42 PM
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Even which plugs?
Check out Lycoming Service Instruction No. 1042AE for approved spark plugs, installation guidelines, gaps, and torques values (assuming you're not using auto plugs):

https://www.lycoming.com/sites/defau...rk%20Plugs.pdf

A previous poster mentioned anti-seize. Note what Lycoming says on page 2:
3. Use a copper-based anti-seize compound or engine oil on spark plug threads starting two full threads from the electrode, but DO NOT use a graphite-based compound.
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Last edited by RV8JD : 01-11-2018 at 09:07 PM.
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  #23  
Old 01-12-2018, 07:00 AM
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Originally Posted by RV8JD View Post
Check out Lycoming Service Instruction No. 1042AE for approved spark plugs, installation guidelines, gaps, and torques values (assuming you're not using auto plugs):

https://www.lycoming.com/sites/defau...rk%20Plugs.pdf


Already have. It seems fairly clear. The only unknowns to this newbie are:

1) the selection of the heat range. I do not know the ramifications of a 40 over a 38 (for example) and

2) selection rationale for E vs BY



A previous poster mentioned anti-seize. Note what Lycoming says on page 2:
3. Use a copper-based anti-seize compound or engine oil on spark plug threads starting two full threads from the electrode, but DO NOT use a graphite-based compound.

Noted that when I read the document yesterday morning.
Thanks for the info and the pointers.

I suppose that once one selects - or knows - which spark plugs to choose, then that leads to selecting the socket, correct?
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  #24  
Old 01-12-2018, 01:45 PM
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Thanks for the info and the pointers.
Re: "2) selection rationale for E vs BY"

The "BY" plugs have the extended electrode (longer nose), which is less susceptible to plug fouling.
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RV-8, 290 Tach Hours
(Pic 1),(Pic 2)
- Out with the Old, In with the New
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Glasflügel H-201B Standard Libelle, N564NS - Sold
Rolladen-Schneider LS1-f, N61MP - No longer owned
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