E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Forced Induction Forum Sponsored by Active Autowerke

Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
Sponsored by Active Autowerke

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 04-12-2012, 01:46 PM   #1
Bdave
Registered User
 
Join Date: Feb 2008
Location: Fort Lauderdale
Posts: 1,827
My Ride: M3 HPF Stage 3
Second tank draining?

Chris was posting on bimmerforums some info on damaged motors. This one looked like user error. Could someone explain what happened? What "second" tank? A fuel cell? I dont understand.

George

* Product: HPF Stage 2
* Problem: April 2010 - Engine Failure
* Diagnosis: Car in Beirut Lebanon. Appears that car may have been set to race mode with residual pump gas in 2nd tank.
* Customer Service: Customer upgraded to stage 3 at substantial discount.
* Product Change: Posted on forums that draining gas from tank will not drain 2nd tank. Customer must drive car until mileage left says zero. Customer must add a minimum of 10 gallons of 110 leaded before flipping race fuel switch.
* Link: None

http://forums.bimmerforums.com/forum....php?t=1610423
__________________
Bdave is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 04-12-2012, 02:15 PM   #2
///3ME
Registered User
 
Join Date: Dec 2010
Location: San Diego
Posts: 95
My Ride: 2004 M3 SMG
I would imagine he is talking about the siphon side of the saddle tank.
__________________
2004 M3 SMG: V1, Intravee, Custom XM, BSW Stage 1, CSL Brake Upgrade
///3ME is offline   Reply With Quote
Old 04-12-2012, 02:54 PM   #3
Bdave
Registered User
 
Join Date: Feb 2008
Location: Fort Lauderdale
Posts: 1,827
My Ride: M3 HPF Stage 3
Quote:
Originally Posted by ///3ME View Post
I would imagine he is talking about the siphon side of the saddle tank.
AHh. There is a hidden portion to our fuel tanks? Very interesting. All this time and I was unaware of this. I donbt know how I missed never hearing about it.

So how DO you pump an OEM tank dry? Let me see if I can find some links on this.

EDIT: OK I found a schematic for my fuel tank. I can see that to properly pump the tank DRY, BOTH right and left sending unit access ports must be opened. The one side contains the fuel pump and the other is just a sending unit, but they both will give you the access you need to use something like this:

http://www.amazon.com/Flo-08338-MaxF..._bxgy_sg_img_b
two gallons per minute flow. Perfect.

This saddle shape has to be what he meant by the "second tank". I am glad I know now. This might save some other people a lot of errors when you THINK you have pumped a tank dry and you still have a 1/4 tank sitting on the left side!
Thank you 3ME for sending me in the right direction. I had to say I kept thinking it was something else.
__________________

Last edited by Bdave; 04-12-2012 at 03:19 PM.
Bdave is offline   Reply With Quote
Old 04-12-2012, 07:19 PM   #4
///3ME
Registered User
 
Join Date: Dec 2010
Location: San Diego
Posts: 95
My Ride: 2004 M3 SMG
You are welcome BDave. Looking forward to seeing your unique system in action.
__________________
2004 M3 SMG: V1, Intravee, Custom XM, BSW Stage 1, CSL Brake Upgrade
///3ME is offline   Reply With Quote
Old 04-12-2012, 07:28 PM   #5
Bdave
Registered User
 
Join Date: Feb 2008
Location: Fort Lauderdale
Posts: 1,827
My Ride: M3 HPF Stage 3
Quote:
Originally Posted by ///3ME View Post
You are welcome BDave. Looking forward to seeing your unique system in action.
My fuel cell? Thats not unique. It is a painfully simplified version of what Neslon Engineering did in this case. They had a fuel cell that would start pumping on demand when high boost condition took place...all governed by owners foot. It is an ultra complex system that is all automatic. Looked like it was prone to issues so I made everything manual. Stop, open the hood and switch. Still, only 20 seconds, but nothing to fail.

You have to watch this video, however. This guy is insane, the owner and the builder!

__________________
Bdave is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 02:07 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use