SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: MID-LAKE-CRISIS on August 11, 2013, 09:23:25 PM

Title: Tanks not draining equal ?
Post by: MID-LAKE-CRISIS on August 11, 2013, 09:23:25 PM

 I know this has been asked before....
 
 first go after motor swap and right (passenger) tank won't drain?

 only thing different from before,

 fuel lines run over tt exhaust to tee then down to fuel pump,   thx

 
Title: Re: Tanks not draining equal ?
Post by: ka0tyk on August 11, 2013, 10:09:36 PM
put ball valves on the pickups and turn the other side off.  tanks will always pull from the easiest side.  an extra bend, inch longer hose, etc. 
Title: Re: Tanks not draining equal ?
Post by: MID-LAKE-CRISIS on August 11, 2013, 10:18:19 PM
put ball valves on the pickups and turn the other side off.  tanks will always pull from the easiest side.  an extra bend, inch longer hose, etc.

 easy fix, thx

 just can't understand problem (hydraulics) , left side empty/right side full ??

 air locked ?
Title: Re: Tanks not draining equal ?
Post by: GT Jets on August 11, 2013, 10:27:36 PM
I know this has been asked before....
 
 first go after motor swap and right (passenger) tank won't drain?

 only thing different from before,

 fuel lines run over tt exhaust to tee then down to fuel pump,   thx

 


Whichever tank starts out with a higher level, or is higher because of a list, that tank will drain faster, simple physics.

Drawing from both tanks at the same time can be risky, if one of the tanks is allowed to run dry, the fuel pump can aerate the fuel and run the motor stupid lean....

GT
Title: Re: Tanks not draining equal ?
Post by: MID-LAKE-CRISIS on August 11, 2013, 10:38:20 PM

Whichever tank starts out with a higher level, or is higher because of a list, that tank will drain faster, simple physics.

Drawing from both tanks at the same time can be risky, if one of the tanks is allowed to run dry, the fuel pump can aerate the fuel and run the motor stupid lean....

GT

 k ,  so shut-offs it is.  thx's guys
Title: Re: Tanks not draining equal ?
Post by: MID-LAKE-CRISIS on September 01, 2013, 08:09:39 PM

 kaOtyk & GT, here we go...see how this works 2morrow,

 will let u know     thx

Title: Re: Tanks not draining equal ?
Post by: MID-LAKE-CRISIS on September 02, 2013, 08:58:47 PM

fuel problems ....  what fuel problems ??   ;)
what a difference a couple ball valves make
ran an hour , reach under , run another.

 thx for spreadin the wisdom   :beer: :beer:
Title: Re: Tanks not draining equal ?
Post by: ka0tyk on September 02, 2013, 11:53:46 PM
good job, glad it all worked out for ya.  get some cushion clamps on those lines to tidy things up so they're not flopping around. 

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.powersourcemotorsports.com%2Fimages%2F13624898731382101013712.jpeg&hash=0789f74bf3c63853f75ebef5307f9f71c4b5b69c)

zip ties can pinch and cut rubber hose, these are nice and when they're tightened down they dont pinch fuel lines shut.  you can grab them at home depot. 

http://www.homedepot.com/p/1-in-Rubber-Insulated-Metal-Clamps-67795/ (http://www.homedepot.com/p/1-in-Rubber-Insulated-Metal-Clamps-67795/)
Title: Re: Tanks not draining equal ?
Post by: MID-LAKE-CRISIS on September 03, 2013, 06:45:22 PM
good job, glad it all worked out for ya.  get some cushion clamps on those lines to tidy things up so they're not flopping around. 

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.powersourcemotorsports.com%2Fimages%2F13624898731382101013712.jpeg&hash=0789f74bf3c63853f75ebef5307f9f71c4b5b69c)

zip ties can pinch and cut rubber hose, these are nice and when they're tightened down they dont pinch fuel lines shut.  you can grab them at home depot. 

http://www.homedepot.com/p/1-in-Rubber-Insulated-Metal-Clamps-67795/ (http://www.homedepot.com/p/1-in-Rubber-Insulated-Metal-Clamps-67795/)



  agreed.... using existing fuel lines dictated location.
  would you suggest glueing a backing mount on transom,
  then lengthen lines to secure  ?

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