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FE Power Forums => FE Technical Forum => Topic started by: rockhouse66 on September 16, 2019, 05:16:10 PM

Title: Pipe Plugs into Aluminum Intake - Material ?
Post by: rockhouse66 on September 16, 2019, 05:16:10 PM

I recall putting an aluminum fitting into an aluminum manifold and it seized up tight - like forever!  So, maybe I did something wrong or what is the best/better pipe plug material for aluminum intake manifolds?  I have brass and steel and am afraid of aluminum now.

I tried Google for this and - well - some say aluminum with anti-seize is fine and some say brass because it is close in galvanic properties.  Or stainless steel (harder to find).

Title: Re: Pipe Plugs into Aluminum Intake - Material ?
Post by: kraut61 on September 16, 2019, 05:23:11 PM

 Teflon tape...about three wraps. Be careful when tightening the fitting because the teflon is "slick" and the fitting can be over tightened very easily.

Title: Re: Pipe Plugs into Aluminum Intake - Material ?
Post by: C6AE on September 16, 2019, 10:28:17 PM

Mcmaster Carr has hex socket pipe plugs in 316 SS
(not that expensive for a high quality part)

https://www.mcmaster.com/pipe-plugs

Title: Re: Pipe Plugs into Aluminum Intake - Material ?
Post by: Drew Pojedinec on September 17, 2019, 01:16:55 AM

Stainless, and use an antiseize for aluminum.
Dissimilar metal issues on the boat all the time...

Title: Re: Pipe Plugs into Aluminum Intake - Material ?
Post by: Falcon67 on September 17, 2019, 09:21:57 AM

I use brass or aluminum - and always with anti-seize or teflon, PTFE paste, teflon tape.  Steel spark plug into aluminum heads - always anti-seize.