Expansion tank on top of fuel tank???, anything "inside"....???? |
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Expansion tank on top of fuel tank???, anything "inside"....???? |
Mueller |
Jun 26 2005, 02:51 PM
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#1
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
pulling my gas tank to install a new fuel pump, filter and lines......started to wonder if anything was inside the expansion tank.....any reason I couldn't substitute a lighter, smaller tank for the same purpose???
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URY914 |
Jun 26 2005, 02:54 PM
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#2
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I built the lightest 914 in the history of mankind. Group: Members Posts: 120,944 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
I've got one in the trash can as we speak,
Want it to cut it in half? Paul (IMG:http://www.914world.com/bbs2/html/emoticons/sawzall-smiley.gif) |
Joe Bob |
Jun 26 2005, 02:54 PM
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#3
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
AFIK...it's an overfill tank for morons that try to get as much gas in as they can...and for thermal expansion on HOT days.
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TravisNeff |
Jun 26 2005, 03:18 PM
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#4
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
I thought that was for vapor recovery, filled with charcoal. Thing only weighs 2 or 3 lbs.
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IanStott |
Jun 26 2005, 03:24 PM
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#5
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Member Group: Members Posts: 226 Joined: 13-June 04 From: Moncton,New Brunswick,Canada Member No.: 2,199 |
What happens if you just elimlinate the thing??
Ian Stott Moncton |
TravisNeff |
Jun 26 2005, 03:27 PM
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#6
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
If you just bypass the tank and still use the vapor recovery? I dunno prolly nuthin'. If you remove the tank and not use the vapor recovery system - you need to plug the hose coming out of the gas tank or it'll get a little stinky in the cabin.
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Joe Bob |
Jun 26 2005, 03:45 PM
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#7
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
The expansion tank is on top of the tank...the charcoal canister is over by the driver side fender....usually... |
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SirAndy |
Jun 26 2005, 03:56 PM
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#8
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Resident German Group: Admin Posts: 41,669 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
i removed the expansion tank and charcoal canister. i simply routed the hose that connects the gas tank vent to the expansion tank into the large transparent plastic drain hose. now, when the tank is full and i do hard left-hand cornering, some fuel will come out the vent and drip down the drain hose resulting in fuel "smell" ... same with a full tank on a really hot day. you sometimes get a hint of fuel smell as the venting gases exit out the bottom of the drain hose. that's it ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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Demick |
Jun 26 2005, 04:57 PM
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#9
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Ernie made me do it! Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257 |
Am I missing something? What's the purpose of removing the expansion tank?
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SirAndy |
Jun 26 2005, 05:06 PM
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#10
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Resident German Group: Admin Posts: 41,669 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
i removed the complete venting system, no expension tank, no charcoal canister, no plastic lines to the engine comp. just stuff that i didn't deem neccessary ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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ruddyboys |
Jun 27 2005, 08:43 AM
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#11
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Hummel eigentümer Group: Members Posts: 594 Joined: 3-March 04 From: Monroe, NY Member No.: 1,749 Region Association: North East States |
Were does the fuel go from the drain hose? |
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ClayPerrine |
Jun 27 2005, 08:49 AM
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#12
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Life's been good to me so far..... Group: Admin Posts: 15,498 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
Andy.. you better watch out. Doing that in California might draw some unwanted attention from the Smog Police. Remember.... MikeZ is one of them!! |
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DNHunt |
Jun 27 2005, 08:58 AM
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#13
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Let's see, there's mostly nitrogen, some oxygen, CO2, unburnt hydrocarbons, various other gases, water vapor, some particulates and probably a little unrecognizable goo in the bottom. Pretty close to air.
Dave |
Joe Bob |
Jun 27 2005, 09:02 AM
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#14
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
The expansion tank drains back into the main tank. It's a safety issue not smog related. The carbon canister is an old school smog device that also keeps odors down. After 30 years it's probably saturated with hydrocarbons. It's a repalcement item. It does little or no smog protection but the drones at EPA insist that it be there, even if it doesn't work. BTW, smog control on cars is to a lesser extent Federal (new) and State (new AND used)....nobody "I" know works for THEM. The individual States can mirror Federal regs, THEY JUST CAN'T BE LESS STRINGENT, adopt their own or reference California's if they are lazy and don't want to do their own research or maintain an agency. |
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ClayPerrine |
Jun 27 2005, 09:09 AM
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#15
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Life's been good to me so far..... Group: Admin Posts: 15,498 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
Oh (IMG:http://www.914world.com/bbs2/html/emoticons/stromberg.gif) !!!
Now look what you have done!!! You woke up the smog police!!!!! |
SirAndy |
Jun 27 2005, 10:00 AM
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#16
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Resident German Group: Admin Posts: 41,669 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
the drain hose just goes out the underside of the car. it does that ON ALL CARS ... if you overspill your tank when filling up, the gas in the "catcher" around the filler neck will simply drain through that hose and come out under your car. the drain hose is the big transparent plastic hose. it works that way on all 914s. the vent hose is a smll dia. hose (on my car greenish) similar to the vaccum hose for the dizzy. i simply shoved it inside the large drain hose, so any gas vapors or slosh from a full tank will drain down the drain hose and exit at the bottom ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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