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Old 12-04-2012, 08:48 AM   #376
ebrabaek
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Quote:
Originally Posted by Sohere View Post
I checked and the valve didn't work anymore so I removed it.

If the original tank couldn't get air, because the valve wasn't working anymore, it had to get air from somewhere else.
Can't be the fuel cap cause I swapped this with the one on my brothers f800gs and tank wouldn't get vacuum.
Any ideas where the tank could have sucked air?
It Can't. That is the only way, unless you have a hole in the tank . How did you determine that it did not vent. Easy flow towards the tank with the arrow, and need 2-5 psi against the arrow. That is the only way into the tank.
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Old 12-04-2012, 08:49 AM   #377
ebrabaek
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Quote:
Originally Posted by Casejeep View Post
im pretty sure the main tank has 2 vents....
Where have you seen the second vent...???
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Old 12-04-2012, 08:57 AM   #378
Casejeep
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Quote:
Originally Posted by ebrabaek View Post
Where have you seen the second vent...???
While reading the directions for the 1.5gal Adventures fuel tank, you hook up on vent line to the tank and you plug up the other one. I have not personally see it myself, its just what i have heard.... but ill be installing the TT tank this month so ill be in the same boat soon enough.
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Old 12-04-2012, 12:53 PM   #379
ebrabaek
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Quote:
Originally Posted by Casejeep View Post
While reading the directions for the 1.5gal Adventures fuel tank, you hook up on vent line to the tank and you plug up the other one. I have not personally see it myself, its just what i have heard.... but ill be installing the TT tank this month so ill be in the same boat soon enough.
They must be talking of the same line. Like plumming in the adv. tank in a break in the stock vent system. Like this....
Instead of the stock vent going into the stock tank..... The stock vent now goes into the adv. tank ....topside.... then bottom of the adv. tank vents into the stock. That way the stock tank vents through the adv. tank, and in to the stock vent system. Simple setup. You are essentially hacking the stock vent line.....Then inserting the adv. tank in said vent line. There are still only one vent. I am curious though...... If you had that vent blocked.... I am most certain that you would have a giant whoooooosh.....and possible fuel starvation issues, as the tank has to vent somehow.....
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Old 12-04-2012, 01:24 PM   #380
Bill the Duck
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Quote:
Originally Posted by OZZY-GS View Post
So are you saying you don't tap into the existing tank you only hook the main fuel line from the TT tank to the original
tank vent line? Then just vent the TT tank over the handlebars ! Is this correct? Cheers
Nope, sorry. The supply-side is as per TT instructions with the two holes in the standard tank. I was just describing the vent lines.

Carry on.
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Old 12-10-2012, 03:54 AM   #381
overlandr
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Originally Posted by cobblecrazy View Post
I am curious, when you next fill it up with fuel and luggage, would you let us know the weight??

overlandr screwed with this post 12-11-2012 at 06:44 AM
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Old 04-30-2013, 10:47 PM   #382
espi
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Quote:
Originally Posted by grandru View Post
No problems at all:

well I dit it like this:

I have it installed with the 2 sides of the tank connected on the vent hose of the main thank.
The hose is also over the dashboard so I can fill the tank with the petcocks open and he do not overfill the main thank.
The advantages are:
-petcocks always open,
-no drilling in to the main tank.
- not possible to overfill the main thank

Last year i have driven this system with a jerrycan for 10000km an it works perfect, when the main tank lowers it sucks the gasoline from the jerrycan, now the tt-tank.

greatings
Hi,

So to get this straight,

You merge the left TT and the right TT tank fuel lines into one hose then run that hose into the stock tank's vent hole located at the back right corner of the the stock tank?

Then you run the TT tank vent line(underneath the TT tank) up and around the instruement cluster and attach it to the right side, kinda high up to minimize water/dust contaminating your fuel. thus allowing both TT tank and the stock tank to equalize the pressure in both tanks.

So there is NO drilling the stock tank.
Petcock stays open ALL the time.
Both tanks vent using a shared vent hose coming out of the TT tank.

BRAVO!!
In theory, it sounds like it would work! And you stated you've done this using a jerry can for many miles.
As long as you have an airtight tank, the fuel pump should provide the fuel suction to draw all the fuel to the engine.
Sounds like you have to have the "canisterectomy" done too (US bikes only).


Sounds awesome!
In about a month, I'm gonna try this and will report back with pics!

Until then.

Ciao,

Espi
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Old 05-02-2013, 06:51 PM   #383
Casejeep
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Quote:
Originally Posted by espi View Post
Hi,

So to get this straight,

You merge the left TT and the right TT tank fuel lines into one hose then run that hose into the stock tank's vent hole located at the back right corner of the the stock tank?

Then you run the TT tank vent line(underneath the TT tank) up and around the instruement cluster and attach it to the right side, kinda high up to minimize water/dust contaminating your fuel. thus allowing both TT tank and the stock tank to equalize the pressure in both tanks.

So there is NO drilling the stock tank.
Petcock stays open ALL the time.
Both tanks vent using a shared vent hose coming out of the TT tank.

BRAVO!!
In theory, it sounds like it would work! And you stated you've done this using a jerry can for many miles.
As long as you have an airtight tank, the fuel pump should provide the fuel suction to draw all the fuel to the engine.
Sounds like you have to have the "canisterectomy" done too (US bikes only).


Sounds awesome!
In about a month, I'm gonna try this and will report back with pics!

Until then.

Ciao,

Espi
Well kinda

If you run the lines though the vent, you only get about 2.5gal of fuel, the rest stays in the bottom of the tank. I have a full write up on my build thread. I have a fuel pump to move the other 2.5gal.
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Old 05-02-2013, 07:47 PM   #384
CheckerdD
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I was talking to my dealer today and they said they got an e-mail from BMW NA that there will be an F800 Adventure GS and that it will have an 6.3 gallon tank - stock, and the pricing will be released shortly. I assume it will be a 2014 bike coming this fall. So screw Tourtech, I will take BMW stock any day. Dave
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Old 05-02-2013, 08:02 PM   #385
petzi-baer
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Originally Posted by CheckerdD View Post
I was talking to my dealer today and they said they got an e-mail from BMW NA that there will be an F800 Adventure GS and that it will have an 6.3 gallon tank - stock, and the pricing will be released shortly. I assume it will be a 2014 bike coming this fall. So screw Tourtech, I will take BMW stock any day. Dave
see the new sticky thread

Also the I don't think Touratech had a tank for the 2013 model. I have the TT tank - and yes - I think the new BMW Adv solution is less trouble.

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Old 05-04-2013, 10:22 AM   #386
espi
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Quote:
Originally Posted by Casejeep View Post
Well kinda

If you run the lines though the vent, you only get about 2.5gal of fuel, the rest stays in the bottom of the tank. I have a full write up on my build thread. I have a fuel pump to move the other 2.5gal.
Awesome< thanks.
I'll go check it out.
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Old 05-04-2013, 11:02 AM   #387
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Quote:
Originally Posted by espi View Post
Hi,

So to get this straight,

You merge the left TT and the right TT tank fuel lines into one hose then run that hose into the stock tank's vent hole located at the back right corner of the the stock tank?

Then you run the TT tank vent line(underneath the TT tank) up and around the instruement cluster and attach it to the right side, kinda high up to minimize water/dust contaminating your fuel. thus allowing both TT tank and the stock tank to equalize the pressure in both tanks.

So there is NO drilling the stock tank.
Petcock stays open ALL the time.
Both tanks vent using a shared vent hose coming out of the TT tank.

BRAVO!!
In theory, it sounds like it would work! And you stated you've done this using a jerry can for many miles.
As long as you have an airtight tank, the fuel pump should provide the fuel suction to draw all the fuel to the engine.
Sounds like you have to have the "canisterectomy" done too (US bikes only).


Sounds awesome!
In about a month, I'm gonna try this and will report back with pics!

Until then.

Ciao,

Espi
Friend of me did this on his F800GS and this works perfect! Bought the TT tank myself some months ago, installed it the same way and it works splendid (after having some minor problems in the beginning).

You don't need a fuel pump to get the other 2.5 gal ...

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Old 05-04-2013, 11:13 AM   #388
espi
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Quote:
Originally Posted by Sohere View Post
Friend of me did this on his F800GS and this works perfect! Bought the TT tank myself some months ago, installed it the same way and it works splendid.

You don't need a fuel pump to get the other 2.5 gal ...

THATS what I wanted to hear!!!

So there is enough suction from the main tank to transfer the fuel uphill from the remaining 2.5 gallons of fuel from the TT tank to the stock tank!

Yaahoo!!

much appreciated,

Espi
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Old 05-04-2013, 01:41 PM   #389
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Thought about getting one, but I have a hard time getting the bike off the kickstand when it's fully loaded.
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Old 05-06-2013, 07:57 AM   #390
espi
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Quote:
Originally Posted by Sohere View Post
Friend of me did this on his F800GS and this works perfect! Bought the TT tank myself some months ago, installed it the same way and it works splendid (after having some minor problems in the beginning).

You don't need a fuel pump to get the other 2.5 gal ...
What sort of "minor issues" did you have?
Did you install a fuel filter? if so, where?
Did you take out any valves in the fuel line?

thanks,
Pablo
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