Best sealant intake gasket ends?

[Bansheex13]

What is the best thing to use on the block part of the intake that will not leak?(4.3 liter chevy)

 

[Don S]

Re: Best sealant intake gasket ends?

Year?

 

[Bondo]

Re: Best sealant intake gasket ends?

Ayuh,.....

rtv Silicone....

 

[Fishermark]

Re: Best sealant intake gasket ends?

Definitely the RTV silicone - throw the end rubber pieces away.


That's assuming you are talking about putting the intake back on - just smearing some silicone on a leaking intake will not work.

 

[Bansheex13]

Re: Best sealant intake gasket ends?

1999 is the year,and I am talking about assembly,not fixing a leak. Any RTV sealant or should I use a specific brand or color?

 

[Fishermark]

Re: Best sealant intake gasket ends?

I generally use the RTV black - but most of them work well for oil resistance. Just clean the area well and lay down a solid bead - about a 1/4" or so - and carefully install the intake. Be sure to coat the bolts with a sealant as well. Permatex makes a good product for that - keeps the oil from wicking up and leaking through the bolts.

I personally like to take a paper towel and wipe both ends immediately after installation. It looks better and makes sure the silicone is fully embedded in the gap.

 

[Don S]

Re: Best sealant intake gasket ends?

Here is the section from the manual on how to do it. Page 3A-24

http://www-alt.mercurymarine.com/mnetdata/SERVICE/CRUISER/Servmanl/25/25a3r1.pdf

 

[JustJason]

Re: Best sealant intake gasket ends?

black rtv from permatex will do it...
personally i use three bond 1215.....
otherwise known as fujibond...
pricey, but good stuff.