Best RTV ?

[b5blue]

I'm doing a head swap soon and want opinions on best RTV to use?   

[fizz]

Great Stuff  sold at NAPA uses a separate gun. And Yamabond

[c00nhunterjoe]

Ford motorcraft 7.3liter diesel silicone.

[John_Kunkel]

You might have noticed that RTV has become somewhat specialized, different formulas for different uses. 

[71_Charger_R/T]

A great all around RTV is Mopar ATF RTV!  I worked at a driveline shop that was owned by chevy guys. They would give me guff about my "Mopar junk" but even they admitted it was the best stuff to use! They always keep it in stock for the work they do.  Make sure it's Mopar "ATF" RTV!   

[b5blue]

Thanks guys!    (Yes I noticed the "specialized"...RTV's and added the use intended in my question.)   

[polywideblock]

I've always had good results with "permatex" products   

[firefighter3931]

I've always had good results with "permatex" products   

Same here 

I like the ultra high temp copper stuff 


Ron

[A383Wing]

"Right Stuff"...available at most any parts store

[b5blue]

Picked up Ultra Copper as it was the only convenient recommended choice.     

[Dino]

Ultra copper is great, you'll have no problems with it.   

[RallyeMike]

Late to the party but also give high recommendations to Ultra Copper. 

[fy469rtse]

  damn I'm late ,
I missed the party

[ws23rt]

Ultra copper is my choice as well for engine assembly. It has done me well and is easy to clean up for the next time.

I feel compelled to add though---I think the use of copper is a sales thing that seems to be a trend these days. ---I am going with it.

We all know that copper is a good conductor but that is a non issue for what we are using sealer for. The copper has nothing to do with sealing

BTW I don't wear copper in my clothing.---For fear the meth/tweekers might want to recycle me.

[garner7555]

Do you guys use RTV on the head gaskets?  I have always just installed them on clean surfaces with no sealer.   

[firefighter3931]

With a composite style head gasket there is no sealer required. With a steel shim gasket I've used the spray copper coat stuff but I only use those (steel shim) gaskets with a factory cast iron head. 


Ron

[b5blue]

Do you guys use RTV on the head gaskets?  I have always just installed them on clean surfaces with no sealer.   

Don't forget you can call Todd at Marsh with any questions about the heads.