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leaking carb..
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Playing in the dirt
 
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leaking carb.. - July 18, 2013, 08:32 AM

Fuck you float valve seat o-ring...and fuck you too ethanol.




At least I ended up with a shiny carb for all my wasted time.

I wonder how well HF o-rings hold up to gas?


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July 18, 2013, 08:37 AM

Viton.

I'm fairly certain they are ethanol resistant. Don't take that as gospel though..

Give me the ID, OD and CSD of the ring you need and I'll see if I have any here. If yes, I'll send you a couple.

Last edited by drz1050; July 18, 2013 at 08:42 AM..
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July 18, 2013, 08:50 AM

It is not the ethanol doing that. When there is no fuel and the o rings/rubber parts get dry that is what does the damage.


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July 18, 2013, 09:15 AM

Quote:
Originally Posted by drz1050 View Post
Viton.

I'm fairly certain they are ethanol resistant. Don't take that as gospel though..

Give me the ID, OD and CSD of the ring you need and I'll see if I have any here. If yes, I'll send you a couple.
I used a std Nitrile it should hold up.

Buna-N (Nitrile)
Recommended Use
Silicone Greases / Oils
Water
Petroleum Oils / Fuels
Ethylene Glycol Fluids

Viton
Recommended Use
Vacuum
Most Acids / Chemicals
Halogenated Hydrocarbons
Di-Ester Lubricants
Petroleum Oils / Fuels
Silicone Oils / Greases

Quote:
Originally Posted by dodge131 View Post
It is not the ethanol doing that. When there is no fuel and the o rings/rubber parts get dry that is what does the damage.
Yeah, but I can still hate on ethanol...


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July 18, 2013, 09:27 AM

Most of what we use here is viton.. when viton won't hold up (temp, chemicals), we move to others..

Viton is pretty hard to beat for vacuum applications though. Next step up from a thick viton is a crush seal.
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July 18, 2013, 09:38 AM

Harbor Freight has a $5 box of multiple sizes of nitrile o-rings. I won't tell you how I know this. Just figure that I had a moment of weakness while there one day....



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July 18, 2013, 09:39 AM

Since you mentioned ethanol...Any local shops with premium (not race) no ethanol gas? I can get 87 octane in charles town but that doesn't do me any good.
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July 18, 2013, 09:45 AM

Quote:
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Since you mentioned ethanol...Any local shops with premium (not race) no ethanol gas? I can get 87 octane in charles town but that doesn't do me any good.
Pretty sure all Liberty gas stations do not have corn in their gas. Double check me though.


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July 18, 2013, 09:46 AM

Last I looked the liberty had 87 octane no ethanol but that was it. I'll have to look again.
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Quote:
Originally Posted by KirkRoy View Post
Last I looked the liberty had 87 octane no ethanol but that was it. I'll have to look again.
What do you need in 93 for?


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July 18, 2013, 09:56 AM

Quote:
Originally Posted by MudDawg View Post
Harbor Freight has a $5 box of multiple sizes of nitrile o-rings. I won't tell you how I know this. Just figure that I had a moment of weakness while there one day....

Take a guess where the o-ring i used came from...


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July 18, 2013, 10:00 AM

Quote:
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Since you mentioned ethanol...Any local shops with premium (not race) no ethanol gas? I can get 87 octane in charles town but that doesn't do me any good.
Manassas airport: Dulles aviation (100LL) $6.35/gal (I'm picking up 10 gallons tonight) mix it with the 87. 75% (87) / 25% (100ll)

Keep the AV gas in a sealed metal can and it will keep for a year.

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What do you need in 93 for?
The KX likely pings on 87-91


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July 18, 2013, 10:27 AM

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Manassas airport: Dulles aviation (100LL) $6.35/gal (I'm picking up 10 gallons tonight) mix it with the 87. 75% (87) / 25% (100ll)

Keep the AV gas in a sealed metal can and it will keep for a year.
Cool, thanks!.

Quote:
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The KX likely pings on 87-91
Yep.

Also, I'm curious what fuel economy is like in the CBR (realizing it's not good $$$-wise, but this is curiosity, just something I've wanted to see).
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