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O-Ring vs Rubber Band

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Ohio-Rider
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O-Ring vs Rubber Band

#1

Post by Ohio-Rider » Sat Mar 07, 2009 3:47 pm

Spring maintenance revealed a monstrous manifold leak, so I’ll be learning something new again. I’ve got an S&S manifold which I believe where designed for the o-ring style installation but mine was assembled using just the rubber bands. :? Anyway I’ve got a few questions before deciding my game plan for this repair.

1)- Will I be able to get a good seal with this bad looking spicket?
2)-Can o-ring and rubber bands be used together?

Image



beets
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Re: O-Ring vs Rubber Band

#2

Post by beets » Sat Mar 07, 2009 4:55 pm

2) I have both on mine.

fourthgear
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Re: O-Ring vs Rubber Band

#3

Post by fourthgear » Sat Mar 07, 2009 6:04 pm

2)-Can o-ring and rubber bands be used together?
Yes but why? Its hard enough to just get one type on correctly , but both ,wow.

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Will I be able to get a good seal with this bad looking spicket?
Using the rubber band type ,yes .

rootwad
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Re: O-Ring vs Rubber Band

#4

Post by rootwad » Sat Mar 07, 2009 8:34 pm

I had the rubber band type on my shovel (59 bottom end) and when I pulled the carb for a rebuild I pulled the intake also. I had a REALLY hard time trying to get the intake to stop leaking so I used the rubber bands instead of the o-rings, but I did put in the spacers to fill the gap. I have no intake problems now. Of course, I was told that the new rubber bands will get eaten by fuel over time, and to replace them on a Panhead is more of a struggle than on a shovel, but? It is working for me. I got the inserts for 2 bucks a piece, two to a side, so easy fix.

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Re: O-Ring vs Rubber Band

#5

Post by Ohio-Rider » Sat Mar 07, 2009 9:10 pm

So even with out breaking the heads loose, the rubber bands should get me a good seal? That’s great news for me. :) To close to our riding season to be taking heads off. Is there a preferable “brand name” of rubber bands and clamps I should be looking for?

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Re: O-Ring vs Rubber Band

#6

Post by Cotten » Mon Mar 09, 2009 12:32 pm

A pro welder can repair and dress that spigot in his sleep.
Putting a band-aid upon it only lengthens the fuse.

Fuel-resistant (James' viton) O-rings are available; Band seals still swell and deteriorate in modern fuels.

Factory design (including clamps) works great if you find the "sweet spot" for assembling an o-ring manifold by pressuretesting while installing. Then make the support mate the carb to it without bind or stress.

And you won't have to remove a head every time you service it.

....Cotten

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Re: O-Ring vs Rubber Band

#7

Post by Ohio-Rider » Mon Mar 09, 2009 5:17 pm

Thanks for your input Mr. Cotten. I wish I had found this leak last fall when I would have had all winter to repair it properly. I’m going to put the band-aid on it for this season and repair it properly next fall.

Its amazing how quickly and severe these leaks show up. Last spring I had no leaks at all. This year I could have blown out my birthday candles with the air coming out that manifold.

Judging how tough it was to get the manifold off, I’ll bet putting it back on will be some kind of fun.

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