turbos with aluminum fuel tanks

[rotax]

What about adding some water remover every so often into a full tank of 92 octane? What effects would this have on a turbo application? Say half a bottle or so every 5 tanks?
BB

Yeah, I'd be curious about this. In Denver we can see temps from 60-70 in Denver to 10-20 at the lot...

And I DO know how bad water is for a 2 stroke...but doesn't the same thing happen with the tank in you truck? Is insulation an option/idea??? Or would make it worse? Or maybe not a huge concern to begin with on an EFI'd 4 stroke?

 

[Ak nitro]

I do not think condensation is an issue, I live in Alaska the temp differences do not get much more extreme. My sled can see negative 50 in the winter to 99 in the summer. Like I said it does not matter what material you tank is made of it will condensate. I owned ski doo summits with plastic tanks and it got to the point where if I did not have iso heat on a cold day the fuel line and pump would always freeze. If you leave the tank full I dont think condensation would even have a chance to build up, although I do not see what a little iso heat every few tanks would hurt.

 

[rednytro]

if you worried about condisation fill youre tank up right after getiing off the mountain at then end of the day . as for welding the fuel tanks just look up a fuel tank repair shopin the yellow pages lots of guys do it . i know most larger welding shops just send the tanks out to get cleaned before they weld on them . . i have seen a few aluminum tanks leak but it was because of a crappy design on the fill spout on some kits. plastic tanks can leak too if there not welded right ,a guy almost burnt his sled to the ground this weekend due to a leaky tank. on my impulse nytro i had to switch the stock flat O ring to an actual o ring and route my vent line the same as stock .The aluminum tank on my impulse has been great and shows no signs of cracking even after a few spills this year .

 

[spring snow hero]

I would say don't sweat the condensation issue as the alight amount of water is gonna be pretty negligeble. if you are not able to fill your tanks then a low point drain to dump the water would be the solution, but I can't imaging a tiny bit of water being any harder than a big shot of methanol.

as for guys welding on tanks purged with car exhaust.....please keep this in mind. CO is flammable, HC's are flammable. if you are getting away with exhaust purging then it is pure luck and your car is heavy on the co2. I used to do all kinds of chit I would never dream of now that I am educated and expierienced. you are gonna need argon to weld it anyways......use inert gases and live longer with your eyes and skin still intact.

 

[powdermuncher]

Yeah, I'd be curious about this. In Denver we can see temps from 60-70 in Denver to 10-20 at the lot...

And I DO know how bad water is for a 2 stroke...but doesn't the same thing happen with the tank in you truck? Is insulation an option/idea??? Or would make it worse? Or maybe not a huge concern to begin with on an EFI'd 4 stroke?

The tanks in any truck are plastic -- have been for many years
They simply are safer .
Yes the condensation issue can be dealt with with Alcohol.