Sealing Oil Galley Plugs

[PurpleBeeper]

I've had my motor gushing oil from the back of the engine. I cahnved the rear main seal, and verified it's not from the oil sender. I'm 99% sure the teflon tape I used on the oil galley plugs next to the rear cam "freeze plug" are leaking.

I bought some "plumber putty" at the hardware store, bit I want zome expert advise on exactly what to use. The transmission is out already. I don't want to do this job again. Thanks for the advice!

 

[PRND21]

I use a little Teflon paste on pipe thread. If it’s “gushing” out, I’d bet it’s the cam plug if not the rear main seal.

 

[metaldad]

i use loctite teflon paste, #565, 567. it does NOT harden, no grit like traditional pastes, fills the threads, seals everything great.
youre somewhere around me, i can turn you on to some.
or if you are NOT going to disassemble, loctite 554 and a primer. i can also 'lend' you the bottle and spray. these i do need back.

 

[Fran Blacker]

I'd have somebody crank up oil pressure like you were priming engine. I had a gallery plug leak PITA.

 

[lewtot184]

i use ARP Teflon paste. but, i'd think Teflon tape, if done properly, would work too.

 

[PurpleBeeper]

Thanks guys, looks like I bought the wrong paste. I "thought" that the Teflon tape I used would be enough, but I was wrong (unless it is the rear cam plug). Hopefully I will find out for sure this evening. I have the trans out, but still need to remove the Lakewood, flywheel & block plate to see for sure.

Do they sell Teflon paste in auto parts stores? I haven't seen it.

 

[68 HEMI GTS]

Clean it good with brake clean and use a little black rtv on the threads of the plug.

 

[HEMI-ITIS]

That will work,,,,,,,,,I always used the paste

 

[PRND21]

Thanks guys, looks like I bought the wrong paste. I "thought" that the Teflon tape I used would be enough, but I was wrong (unless it is the rear cam plug). Hopefully I will find out for sure this evening. I have the trans out, but still need to remove the Lakewood, flywheel & block plate to see for sure.

Do they sell Teflon paste in auto parts stores? I haven't seen it.

You can get the Teflon sealer at any hardeware store, Home Depot, Menards, etc..., plumbing dept.
The thing I don’t like about the tape is that little pieces can come off and get into places and plug orifices and little holes. Definitely don’t use it on fuel fittings.

 

[RJRENTON]

Gentlemen,
My opinion I would use, and do use, LOCTITE GRADE AV HYDRAULIC SEALANT (RED MATERIAL), applied on clean dry threads using the recommended Loctite primer (an aerosol material). The primer hastens the cure of the anaerobic sealant. Perhaps you would consider using NEW screw in plugs. Pipe threads are tapered and perhaps yours are worn out from being over tightened. The grade AV sealant, when applied correctly, will seal up to 1000 psi and 300+ degrees temp. But, I would NOT use teflon thread dope or teflon tape, but this is just my opinion.
Bob Renton

 

[moper]

The threads on those plugs are National Pipe. They seal against each other to seal it. So either the plug is loose, or it's tight and not your leak. I use liquid Teflon on all mine, but it's more to get them out if I need to again, then actually seal because the threads seal it when properly installed.

 

[khryslerkid]

You kids! Teflon is for frying pans, silicone is for rain gutters.

 

[RJRENTON]

The threads on those plugs are National Pipe. They seal against each other to seal it. So either the plug is loose, or it's tight and not your leak. I use liquid Teflon on all mine, but it's more to get them out if I need to again, then actually seal because the threads seal it when properly installed.

All pipe threads sre tapered. There two (2) types of pipe threads...both are tapered...typically 11 1/2 threads per inch and DRY SEAL THREADS, with the same thread dimensions. This style is tapered but has square section threads, which increases the sealing surfaces permitting lower installing torque. For my money and piece of mind, I'll continue to use the Loctite grade AV material i noted in my response. Like anything, there are differences in opinion as to material and methodology.....you pay your money and take your choice.....remember "mom loves me best"....
Bob Renton

 

[69L48Z27]

I used Indian Head on freeze plugs and these galley plugs.

 

[Steve Garner]

If you've got a visible leak it's not from the threaded plugs (unless it's falling out). You can put a pipe thread plug in dry and the worst you will get is a little sweating. Might get an actual drip with hydraulics at 2600 psi at the plug, but with under 80 psi, just doesn't happen. Teflon tape, pipe dope, anerobic flange sealant.... Any of them will work just fine. I wouldn't use rtv because of it's intolerance for any oil contamination on the surfaces that are mating, but even that is unlikely to leak.

 

[bm02tj]

Teflon tape is good to 250f so it is either loose or not leaking
check cam plug

 

[wyrmrider]

NO Silicone EVER- it's not oil compatible
Hylomar or loctite