Best thread sealer?

[martybose]

When I assembled my motor I used some thread sealer that I had in my toolbox from a previous project, and frankly it didn't work. I'm running Evans NPG+, which makes it more inclined to leak anyway, and boy it does! Currently it is leaking from about 1/3 of the head studs, two of the waterpump bolts, and from the thermostat housing. I can only imagine how bad it would be if I had put a pressurized radiator cap on it.

My winter project this year is to pull the head and intake manifold off and get them polished, and I'd sure like to clean up all of the bolts and studs and seal them up for good when I reassemble it.

So, what the the consensus of the best thread sealer to use?

Marty

[Dennis Hemingway]

I used Teflon tape when I did my water pump. That is what our son told me to use, and he is a master mechanic.

Dennis:cool:

[Norm's Coupe]

I used teflon brush grade sealer when I did the rebuild in 1998. Still no leaks anywhere.

[Guest rockabillybassman]

I use plumbers black graphite thread sealing compound.

[Normspeed]

I used permatex white thread sealant on this motor. In the past I've used non hardening Permatex #2.

[Lou Earle]

I have used parmatex #2 and plumers grey pipe thread sealant - both no problems

Lou