General Category > Quadrajet Carb Talk and Tips

brake booster vacuum fitting on back side of quadrajet carb base plate

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GSP7:
What is the proper thread sealant to use on the threads of the brake booster vacuum fitting on back side of quadrajet carb base plate?  If any....

I know I wont use teflon tape

GSP7:
I have some brush on white stuff, pipe thread sealer, think its a teflon paste , or I have some anti seize/thread sealer I use on head bolts etc...

Or ?  Or use nothin' ?

Kenth:
Vacuum National Pipe Threads needs no sealant.

GSP7:
 8)

Cliff Ruggles:
I use a very small amount of liquid thread sealant (PTFE) on all NPT fittings, NEVER Teflon tape.  The reason I use it as it not only seals the threads is provides some lubricant so they don't bind up and split the casting.  The baseplates drilled and tapped for 1/4" NPT threads are pretty thin and crack easily if you over-tighten the rear fitting......

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