Sealing carb holders to engine?

  • JR
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31 Jul 2011 15:21 #466030 by JR
Sealing carb holders to engine? was created by JR
What you you guys recommend for sealing the rubber carb holders to the engine ?

Last year I replaced the original carb holders and used a green Permatex 2 but it seemed to dry up. I had the carb holders off today and used Permatex grey when putting them back on. On the Permatex website under automotive it was recommended for manifold intake seals but no mention under motorcycle applications.
1980 kz750E1, Delkevic exhaust

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  • wireman
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31 Jul 2011 15:43 #466032 by wireman
Replied by wireman on topic Sealing carb holders to engine?
silicone,yama bond...... B)
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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31 Jul 2011 15:53 #466034 by OnkelB
Replied by OnkelB on topic Sealing carb holders to engine?
ThreeBond 1104, or 1194 as it's called now (basically the same stuff as Yamabond, Hondabond etc).
77 KZ 650 B1, 82 GPz 1100 B2.

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  • JR
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31 Jul 2011 20:15 - 31 Jul 2011 20:41 #466066 by JR
Replied by JR on topic Sealing carb holders to engine?
Thanks guys. I'll try to get some during the week. Hoping the permatex grey will hold up until next Saturday
1980 kz750E1, Delkevic exhaust
Last edit: 31 Jul 2011 20:41 by JR.

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  • TeK9iNe
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31 Jul 2011 20:21 #466069 by TeK9iNe
Replied by TeK9iNe on topic Sealing carb holders to engine?
Ive used permatex Motoseal (gray tube), as it lists explicitly for sealing larger gaps on that parts that move or are frequently dissasembled, and it is resistant to gasoline.

Might want to check if the 1194 is actually gas resistant - probly is, and its a good product too.

B)
Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)

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31 Jul 2011 20:51 #466075 by 650ed
Replied by 650ed on topic Sealing carb holders to engine?
I put mine on dry. No leaks. Maybe if you're re-using old ones a little goo on there might help, but be sure to wipe any excess from the inside as you wouldn't want any getting sucked into the cylinder. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • JR
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31 Jul 2011 20:54 - 31 Jul 2011 21:03 #466076 by JR
Replied by JR on topic Sealing carb holders to engine?
Thx. I'll keep fingers crossed that the grey will hold up.
The Threebond website says gas oil and water resistant. I think it might be a good product to have handy in my toolbox

650ed, the old ones I replaced 18 months ago were on dry and sealed well at the engine surface but had cracks. The new ones leaked when put on dry.
1980 kz750E1, Delkevic exhaust
Last edit: 31 Jul 2011 21:03 by JR.

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01 Aug 2011 16:36 #466200 by leorider
Replied by leorider on topic Sealing carb holders to engine?
High temp RTV. Black tube.
78 KZ650B

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01 Aug 2011 20:13 #466235 by mtbspeedfreak
Replied by mtbspeedfreak on topic Sealing carb holders to engine?

leorider wrote: High temp RTV. Black tube.


+1
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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01 Aug 2011 20:19 #466237 by racer54
Replied by racer54 on topic Sealing carb holders to engine?
I've always put mine on dry also. Never had a problem in all my years. I did use some yamabond on the manifolds for the turbo just in case but not sure it was really needed.
1980 LTD (changed over the years), 1979 LTD (being rebuilt), 1977 KZ turbo and various KZ's in various states of build. KLX110

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01 Aug 2011 23:50 #466279 by Patton
Replied by Patton on topic Sealing carb holders to engine?
The yet unsolved problem for me is finding a sealant that's both heat proof and gasoline proof.

Was unable to locate a Permatex product sealant represented as being both heat proof and gasoline proof.

Absent both qualities, would expect the seal to deteriorate sooner or later.

Imo, the carb holders should be installed "dry" and without any sealant.

Good Fortune! :)
1973 Z1
KZ900 LTD

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02 Aug 2011 00:36 #466290 by RonKZ650
Replied by RonKZ650 on topic Sealing carb holders to engine?
Dry always worked for me, but if you must, Yamabond #4 works fine. For sure don't use RTV anywhere. It sucks majorly. Sorry, but no kind words for that sealer are in my mind.
321,000 miles on KZ's that I can remember. Not going to see any more.

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