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General Category >> Rubber Side Down! >> Carb seal method for 660 petcock change
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Message started by Eegore on 04/19/17 at 20:23:16

Title: Carb seal method for 660 petcock change
Post by Eegore on 04/19/17 at 20:23:16

Anyone know of a specific part to seal the carburetor input where the stock petcock vacuum line attaches?

I went to an auto parts store and they recommended I just crimp the stock hose and put a hose clamp on it. I need better ideas than that.

Title: Re: Carb seal method for 660 petcock change
Post by verslagen1 on 04/19/17 at 20:58:23

They do sell port caps, but they don't last very long and you'll end replacing every year.
They gave you a good tip, but just cut the line 1 to 2" long and shove a bolt in it.

Title: Re: Carb seal method for 660 petcock change
Post by Kenny G on 04/19/17 at 22:06:37

Eagore,

When I installed my Raptor a few years ago I squirted some Silicone Gasket Sealer in the stock hose that I cut off and then threaded an Allen Bolt in while the Silicone was still wet and put a clamp on the tube to hold it onto the vacuum port. It will last as long as the bike. The vacuum caps you purchase at the auto parts store only last a few years at best.

Kenny G :-/

Title: Re: Carb seal method for 660 petcock change
Post by ohiomoto on 04/20/17 at 05:59:37

Mine was cut about 2-3" long, the end was filled with silicone, folded over and then zip tied by the previous owner. No leaks.

Title: Re: Carb seal method for 660 petcock change
Post by Bubba on 04/20/17 at 06:47:53

I looked around for a small machine screw that would just barely fit in the port...I screwed it in using a dot of blue Loctite sealer on the threads and then put a rubber cap from the foot of an old dish dryer rack on it...that was 4 years ago and it's still fine.

Title: Re: Carb seal method for 660 petcock change
Post by Dave on 04/20/17 at 07:13:14

I bought a pack of rubber caps at the auto store. I installed one, and put a spare in the tool kit. I had it on the bike a couple years before switching to a different carb....and it held up for that length of time.

I guess the rubber caps I bought were better than some - a few members said the ones they installed aged quickly.

Title: Re: Carb seal method for 660 petcock change
Post by koehlerrk on 04/20/17 at 10:10:33

I just swapped out the stock petcock for a Raptor on my wifes' 03 Savage. I cut the vacuum line off about 2" long, found a machine screw that fit into it snug. I squirted a wad of silicone into the end of the tube, and pushed the screw into it. Then I put a zip tie around it and pulled it tight with pliers. Let the silcone cure overnight, then put it back on the vacuum port on the carb.

Title: Re: Carb seal method for 660 petcock change
Post by Eegore on 04/20/17 at 17:34:08

Thanks for the ideas. I will probably try to epoxy a screw in the current hose and clamp it down.

Title: Re: Carb seal method for 660 petcock change
Post by Kris01 on 04/20/17 at 18:11:33

Didn't someone here use the brass from a spent .22 to cover the hole?

Title: Re: Carb seal method for 660 petcock change
Post by Eegore on 04/20/17 at 18:13:23

"Didn't someone here use the brass from a spent .22 to cover the hole?"

Probably some genius. I have tons of those sitting around.