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i just bought some new carb mounts for a 1990 indy 650. The new ones have a metal face with an o-ring in the center unlike the old ones that had a solid rubber face. Can anyone tell me if you can just bolt these on or do you need to use silicone also?
 

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O-ring = Great seal....no silicone needed. If you look at your old ones, there is probably a raised portion of the rubber that is in the shape of an o-ring. Anyways, I would not use any type of sealant.

Polaris is my way out - Other people just use a door.
 
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