Future leaktest proof glue and manifold Insulator

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PanPal
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Future leaktest proof glue and manifold Insulator

#1

Post by PanPal » Thu Jul 17, 2008 10:15 pm

Last week I finally fired up a 50 EL chop project I've been working on. During the assembly, I had a S&S manifold with a CV adapter but did not want the carb. sticking out that far. So we used left over parts from my buddy's shop to get something together to start the bike. I have a linkert manifold that needs to be replaced due to a chip in the front intake lip and a broken out bolt hole. I machined the end of an old linkert to Bendix adapter so that a CV would push into the rubber bushing. It came out a little short, but was what was needed to start the bike. Last night I made an extension for the adapter that can be pressed into the present adapter. It is machined for a .007 interference fit. This is aluminum to aluminum and I would like to glue it before I press the extension in. My question is, what would you guys recommend for the glue? I was thinking of using Green retaining Locktite, or JB weld but I have been hearing this modern gas may eat the JB weld. i also have plenty of Three bond, Yamabond and a variety of heat type Silicone sealers.
When the adapter was a bit short we also had to install 2 insulator pads between the adapter and manifold. I machined the extension long enough to remove both and run only a gasket. Is the rubber bushing for the CV adequate as a insulator between the carb. and manifold?



mbskeam
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#2

Post by mbskeam » Thu Jul 17, 2008 11:23 pm

tig weld.....

mbskeam
Last edited by mbskeam on Sat Jul 19, 2008 12:34 am, edited 1 time in total.

Robert Luland
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#3

Post by Robert Luland » Fri Jul 18, 2008 1:03 am

Weld.

1950 Bobber

#4

Post by 1950 Bobber » Fri Jul 18, 2008 1:54 am

(jb) WELD!

51Hog
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#5

Post by 51Hog » Fri Jul 18, 2008 5:01 am

W-E-L-D

PanPal
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#6

Post by PanPal » Fri Jul 18, 2008 6:05 pm

As in Tig? Not JB huh?

51Hog
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#7

Post by 51Hog » Fri Jul 18, 2008 8:51 pm

Tig is good.

PanPal
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#8

Post by PanPal » Fri Jul 18, 2008 9:10 pm

Thanks all!
Glue was to easy. I guess It will have to wait until Monday now.

Is the rubber mount on the CV good for a insulator, or do I need to install one between the manifold and adapter?

john HD
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#9

Post by john HD » Fri Jul 18, 2008 10:33 pm

panpal

i ran my cv for years with just the rubber adaptor.

buy a spare one. they seem to develop a crack on sunday morning when you want to go for a ride with your buddies... when all the shops are closed.

that is why i went the linkert route!

john

PanPal
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#10

Post by PanPal » Mon Jul 21, 2008 4:46 pm

Thanks John!

I did buy a spare. When the CV rubber cracks on Sunday, I get on the 59 with the Linkert.

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#11

Post by Panacea » Tue Jul 22, 2008 3:35 am

The problem with the OEM CV intake/carb seal is it offers no support for the carb, The press on addaptor available on E-Bay for about 30 bucks does a fine job of holding the carb secure when used with the typical S&S carb support fastened to the center case bolt. I spoke with the guy that makes the addaptor and he claims a zero failure rate with the adaptor when pressed on with JB- Weld. So far so good after two years on mine. I do use an insulator block that was on my S&S E between the carb addaptor and manifold. Mike

PanPal
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#12

Post by PanPal » Tue Jul 22, 2008 2:56 pm

Mike, it sounds like a good set up that way. I am too far into it now. I have the OEM linkert manifold repaired and the extension is welded to a Modified Branch Bendix adapter. I machined the ID of the adapter .015 smaller than the original for a tighter press on the rubber bushing. I plan to support it from the back of the air cleaner keeping everything in position. The S&S manifold was just too long, but like you suggest much easier to support. And I could have machined the S&S manifold down, but we seem to need them in the shop more often, So I didn't want to destroy it.

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