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Sealant for carb holders to engine 19 Apr 2006 11:50 #40871

  • gas
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This could go carb or engine forum I suppose, anyway....
I have read several times in the archives about using RTV black to seal the carb holders to the engine. I went through my tubes and eliminated my Permatex 2 form a gasket and the Permatex Red hi-temp was tempting but seems to be more of an outdoor application. The last tube that I have is Permatex ultra grey. It's oil resistant, has serious vibration resistance and a heat resistance up to 650 degrees. Is there any reason why I shouldn't use ultra grey to seal my carb holders instead of the Loctite RTV black, that only goes up to 400 degree heat resistance?

Post edited by: gas, at: 2006/04/19 14:52

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Sealant for carb holders to engine 19 Apr 2006 12:12 #40878

  • mariozappa
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I've used the red hi-temp in the past and it's been just fine.
1977 KZ650C1
and the KZ650/KZ750 Conversion ;)

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Sealant for carb holders to engine 19 Apr 2006 13:17 #40887

  • BARNEYHYPHEN
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I use the Ultra Grey and have suffered no apparent problems. I also smear a little vaseline inside the boots before i refit the carbs. Seems to help the refit process.

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Sealant for carb holders to engine 19 Apr 2006 16:01 #40902

  • jtmcculloch
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Ultra Grey is the best

you can also mix in some thinner and brush it on your tank and side covers to make a very cool looking finish.

it is very durable and cheaper than most spray paints.

it also helps to sprinkle a little sand on it while it is wet on the tank to make it a non-slip surface for those that like to drive real peg scraping crazy.
76 KZ1075
93 ZR1100
71 Moto-guzzi 750
2001 ZR-7S

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Sealant for carb holders to engine 19 Apr 2006 17:38 #40921

  • fonZee
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Hondabond.

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Sealant for carb holders to engine 20 Apr 2006 00:03 #41029

  • gas
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This one is settled for me, thanks guys.

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Sealant for carb holders to engine 21 Apr 2006 09:39 #41419

  • kx_125_pilot
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jtmcculloch wrote:

Ultra Grey is the best

you can also mix in some thinner and brush it on your tank and side covers to make a very cool looking finish.

it is very durable and cheaper than most spray paints.

it also helps to sprinkle a little sand on it while it is wet on the tank to make it a non-slip surface for those that like to drive real peg scraping crazy.


what kind of a finish? and where did you get that idea??

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Sealant for carb holders to engine 21 Apr 2006 09:59 #41422

  • waterman
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Quick question, how hard is it (generally) to remove the old boots. Mine are old and probably have never had any moron superglueing them on--how hard have you found them to be coming off?

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Sealant for carb holders to engine 21 Apr 2006 14:13 #41482

  • kx_125_pilot
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they should just pop off farely easily......might need a bit of help with a flat blad but, should't need a winch lol

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