how to keep gas from spillin

justinkr58 · 06-13-2008, 08:37 PM

how to keep gas from spilling out of the cap when i dump the bike.

I was doin some expert trails with downed trees and i dumpped it a couple times when trying to hop the trees, any type of sealed gas cap, cus it pours out..

AZ200cc · 06-13-2008, 08:43 PM

Is the rubber seal all cracked...You know how the Chinese rubber is.

justinkr58 · 06-13-2008, 08:46 PM

no it is there, it is made to breath i think but i wanna seal it off

lego1970 · 06-13-2008, 08:56 PM

If you seal it off the motor will die from fuel starvation. There will be no way for the air to replace the consumed fuel and therefore the fuel will lock itself in the fuel tank causing the motor to die.

Some newer cars as well as off road jeeps come with a check valve in the fuel cap to prevent fuel spillage in the event of a roll over. I'm sure you could rig something similar.

Rizn · 06-13-2008, 08:59 PM

I have metal tanks, the caps are metal with no hole for breathing, atv and enduro, do they breath some other way

ImEazy · 06-13-2008, 09:48 PM

I brought this up the other night in another thread. I'm still looking for a
better cap. If I find one I will let you know. Would appreciate the same in
return.

IronFist · 06-13-2008, 11:39 PM

The gas cap on my chinabike fell apart. I actually used the cap off of a marine gas can to get home from Sarnia. I had to Mcgyver the tabs so that the cap would seal. But I did a good job and it never failed. My bike was layed over when I tried to kick start it once. The marine cap held the fuel in. I think they're made to not leak. I doubt this helps you guys, just tryen to help.

TeamCheap · 06-13-2008, 11:46 PM

when my cap plugged itself up it did indeed stopped the fuel from flowing and that wont do you any good.

The cap has a two small steel ball bearings that I guess is suppossed to allow to cap the breath but restrict the fuel flow if the bike is layed down.
The does work but will not stop the fuel completely.

If you have a dirt bike type cap, you know the ones with the fuel vent tube, then you can install a check valve that they sell for them.

justinkr58 · 06-14-2008, 08:11 PM

yea , i looked on ebay and found a dirtbike ascap and Breather check valve.
but will the cap fit?

does are enduros have threads on the tank or just a ring to hold the locking cap on?

IronFist · 06-14-2008, 11:48 PM

Yep TeamCheap, I'm pretty sure the marine cap was the little ball bearing type. I think my stock cap had rubber valves that didn't work too well keeping in the gas. Though it let air in great to equalize the pressure.

ImEazy · 06-15-2008, 01:25 AM

Quote:

Originally Posted by justinkr58

yea , i looked on ebay and found a dirtbike ascap and Breather check valve.
but will the cap fit?

does are enduros have threads on the tank or just a ring to hold the locking cap on?

I don't know what bike you have, but that type won't work on my bike.
Here's a couple pics for ya...

My cap on left and pitbike cap on right...

Another pic of the pitbike cap...

My tank neck has no threads...

Hope this helps. I'm still searching for a better one.

TeamCheap · 06-15-2008, 04:54 AM

Top pic-left cap, looks to be about what we have on ours and those two little holes are part of the vent holes.

If you take it apart do it on some type of tray to catch the parts/springs and be ready to sit and do a puzzle.

(its a fun puzzle though)

How about you just buy another cap that fits your bike then see if you can mod it to take a breather hose with check valve.I know the key will be a pain.

I think the main reason our caps are press on is because of the key lock which when turned pulls the tabs back but its all a joke since our tanks are made of plastic and the cap I'm sure could just be pryed off but would most likely ruin the tank.

Dirtbike/pitbike caps will just be screw on as they rarely use locking caps on those types of vehichles.

Maybe you'll need to replace the whole tank with a dirtbike tank that has the regular simple better screw on cap.

katoranger · 06-15-2008, 08:26 PM

I have a mercedes gas cap. 8O

It fit right on the Dr350 gas tank. No lock, but it fits like the stock gas cap. The neck on the lifan tank was smaller.

I have a plastic dr200 tank too. Might try that one out also.

Allen

06-13-2008, 08:37 PM	#1
justinkr58 Join Date: Apr 2007 Location: mn Posts: 183	how to keep gas from spillin how to keep gas from spilling out of the cap when i dump the bike. I was doin some expert trails with downed trees and i dumpped it a couple times when trying to hop the trees, any type of sealed gas cap, cus it pours out..
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06-13-2008, 08:43 PM	#2
AZ200cc Join Date: Apr 2007 Location: Show Low Arizona Posts: 2,889	Is the rubber seal all cracked...You know how the Chinese rubber is. __________________ <br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90
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06-13-2008, 09:48 PM	#6
ImEazy Join Date: Jun 2006 Location: N.E. Ohio (Near Akron) Posts: 599	I brought this up the other night in another thread. I'm still looking for a better cap. If I find one I will let you know. Would appreciate the same in return. __________________ 2000 MZ Baghira
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06-13-2008, 11:39 PM	#7
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	The gas cap on my chinabike fell apart. I actually used the cap off of a marine gas can to get home from Sarnia. I had to Mcgyver the tabs so that the cap would seal. But I did a good job and it never failed. My bike was layed over when I tried to kick start it once. The marine cap held the fuel in. I think they're made to not leak. I doubt this helps you guys, just tryen to help. __________________ IronFist ___________________________________ The "chain" of command is used for beating spammers. ___________________________________
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06-15-2008, 08:26 PM	#13
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I have a mercedes gas cap. 8O It fit right on the Dr350 gas tank. No lock, but it fits like the stock gas cap. The neck on the lifan tank was smaller. I have a plastic dr200 tank too. Might try that one out also. Allen __________________ You meet the nicest people on a Honda Clone.
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06-13-2008, 08:46 PM	#3
justinkr58 Join Date: Apr 2007 Location: mn Posts: 183	no it is there, it is made to breath i think but i wanna seal it off
	0

06-13-2008, 08:56 PM	#4
lego1970 Join Date: Apr 2008 Location: Blue Springs, Missouri. United States Posts: 505	If you seal it off the motor will die from fuel starvation. There will be no way for the air to replace the consumed fuel and therefore the fuel will lock itself in the fuel tank causing the motor to die. Some newer cars as well as off road jeeps come with a check valve in the fuel cap to prevent fuel spillage in the event of a roll over. I'm sure you could rig something similar.
	0

06-13-2008, 08:59 PM	#5
Rizn Join Date: Apr 2008 Posts: 127	I have metal tanks, the caps are metal with no hole for breathing, atv and enduro, do they breath some other way
	0

06-13-2008, 11:46 PM	#8
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	when my cap plugged itself up it did indeed stopped the fuel from flowing and that wont do you any good. The cap has a two small steel ball bearings that I guess is suppossed to allow to cap the breath but restrict the fuel flow if the bike is layed down. The does work but will not stop the fuel completely. If you have a dirt bike type cap, you know the ones with the fuel vent tube, then you can install a check valve that they sell for them.
	0

06-14-2008, 08:11 PM	#9
justinkr58 Join Date: Apr 2007 Location: mn Posts: 183	yea , i looked on ebay and found a dirtbike ascap and Breather check valve. but will the cap fit? does are enduros have threads on the tank or just a ring to hold the locking cap on?
	0

06-14-2008, 11:48 PM	#10
IronFist Join Date: Apr 2007 Location: Toronto Ontario Canada Posts: 2,585	Yep TeamCheap, I'm pretty sure the marine cap was the little ball bearing type. I think my stock cap had rubber valves that didn't work too well keeping in the gas. Though it let air in great to equalize the pressure.
	0

06-15-2008, 04:54 AM	#12
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	Top pic-left cap, looks to be about what we have on ours and those two little holes are part of the vent holes. If you take it apart do it on some type of tray to catch the parts/springs and be ready to sit and do a puzzle. (its a fun puzzle though) How about you just buy another cap that fits your bike then see if you can mod it to take a breather hose with check valve.I know the key will be a pain. I think the main reason our caps are press on is because of the key lock which when turned pulls the tabs back but its all a joke since our tanks are made of plastic and the cap I'm sure could just be pryed off but would most likely ruin the tank. Dirtbike/pitbike caps will just be screw on as they rarely use locking caps on those types of vehichles. Maybe you'll need to replace the whole tank with a dirtbike tank that has the regular simple better screw on cap.
	0