Manifold and Riser Sealants?

[nigels]

Hope to install new ali manifolds and risers this week (if it stops raining) and wondered what sealant is best to use on the riser gaskets and what sealant if any on the exhaust gaskets?

I have read the manual and several threads however any other useful tips for this procedure will be greatly appreciated.

1999 4.3 MerCruiser

 

[rodgeml1]

Re: Manifold and Riser Sealants?

Per the linked service bulletin, no sealant is used when installing the gaskets. Also note the revised torque values.

http://www.boatfix.com/merc/Bullet/99/99_10.pdf

 

[Jmunk]

Re: Manifold and Riser Sealants?

The gaskets are designed to go on dry, make sure your surfaces are clean.

 

[Bondo]

Re: Manifold and Riser Sealants?

The gaskets are designed to go on dry, make sure your surfaces are clean.

Ayuh,..... Clean, 'n Flat.....

 

[nigels]

Re: Manifold and Riser Sealants?

Thanks guys, for you input, I didn't know about the new torque numbers, either!