I'm putting all the accesories on my car then starting up the new engine for a first time. I'm just curious what to use to seal the threads for the water pump.

 

Are you talking about the water outlets (heater hose connections) ? If so, all I ever use is regular teflon tape. If you are talking about the bolts that hold the pump to the block, I use nothing. Never had a leak, ever.

 

Never used anything, except a bit of copperslip on the bolts to ease getting them out in future.
You dont need to "seal" the bolts as such.

 

That was posted about 3 years ago, I just saw it and panicked. OK, thanks guys!

 

So whats beter the copper sealant or the locktite? If you use locktite, that just keeps the threads from coming loose right? Does'nt seal anything.... Doesn't need to in this application right?

 

Copperslip helps it come out when you want to remove it. Loctite keeps it in there.

 

He's probably referring to a V6.

 

It is not "copper sealant" it is "copper slip" I've never heard of it, but I think it is a copper based antisieze compound. I use Nevrsieze myself which is aluminum based. It probably doesn't make any difference which you use, but something to keep the threads from rusting to the block is a good idea. Sealant is not needed on the v8, the bolts don't go through to water.

 

fewwww..... ok, thats all i needed to hear.

(the thing about the V8, and water)

Thx for clearing that up

 

Yeh sorry, i wasnt very clear, its a grease, [copper based] thats an anti-seize compound.
Usually available in tubs or spray can.
And the aluminium variety is good too, you can get some that can be used on exhaust bolts as its vht [very high temperature] and can resist the temperatures of headers.

 

Yes they do. The lower right bolt goes into the water jacket. Apply silicone to the threads of the bolt to seal it up.

 

LocTite offers a lot of chemicals in their product line. It extends well beyond the anerobic thread lockers for which they became famous. The LocTite PST is a thread sealant, not a thread locker.

FWIW, Permatex/Loctite anti-seize (133K) is primarily a nickel-based compound, not aluminum. It contains a variety of other metals, as well as oil and soluble wax. They also have other formulas of anti-seize, including a high nickel variety that is very dark gray, and not the popular silver/aluminum color of the "regular" anti seize.

Yes, you don't need to apply thread sealant to the water pump bolts. You also don't need to torque head bolts. You don't need to inflate tires if you choose not to. It's all up to you. If you want to see which ones are drilled through to the cooling passages, don't use sealant. They'll become apparent soon enough.