Sealing carb holders to engine?

JR
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Sealing carb holders to engine?

31 Jul 2011 15:21

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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Re: Sealing carb holders to engine?

31 Jul 2011 15:43

#466032

silicone,yama bond......

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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OnkelB
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Re: Sealing carb holders to engine?

31 Jul 2011 15:53

#466034

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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Re: Sealing carb holders to engine?

31 Jul 2011 20:15 - 31 Jul 2011 20:41

#466066

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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Re: Sealing carb holders to engine?

31 Jul 2011 20:21

#466069

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.

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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650ed
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Re: Sealing carb holders to engine?

31 Jul 2011 20:51

#466075

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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Re: Sealing carb holders to engine?

31 Jul 2011 20:54 - 31 Jul 2011 21:03

#466076

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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leorider
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Re: Sealing carb holders to engine?

01 Aug 2011 16:36

#466200

High temp RTV. Black tube.

78 KZ650B

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mtbspeedfreak
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Re: Sealing carb holders to engine?

01 Aug 2011 20:13

#466235

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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racer54
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Re: Sealing carb holders to engine?

01 Aug 2011 20:19

#466237

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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Patton
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Re: Sealing carb holders to engine?

01 Aug 2011 23:50

#466279

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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RonKZ650
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Re: Sealing carb holders to engine?

02 Aug 2011 00:36

#466290

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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