Notices

J tubes

Old 03-20-2017, 07:30 PM
  #11  
bck
Charter Member#568
Charter Member
 
bck's Avatar
 
Join Date: Dec 2000
Location: Western N.Y.
Posts: 2,171
Received 16 Likes on 14 Posts
Default

Some of the rock crawler guys have a slightly different setup that accomplishes the same thing as the j tubes without the worry of siphoning fuel out of the bowls. If that's a concern of yours...
__________________
Straight bottoms and flat decks
bck is offline  
Old 03-20-2017, 07:42 PM
  #12  
Gold Member
Gold Member
iTrader: (3)
 
vintage chromoly's Avatar
 
Join Date: Sep 2011
Location: cleveland ohio
Posts: 2,634
Received 12 Likes on 6 Posts
Default

Originally Posted by Baja8808
I bought an HP750 and a HP1000 cfm from AED, they turned the tubes 180 degrees with the small side facing the middle. They said the coast guard approved that setup.
There is no USCG requirement for j tube carb vents.
vintage chromoly is offline  
Old 03-20-2017, 07:48 PM
  #13  
Registered
iTrader: (7)
 
Join Date: Feb 2009
Location: NW Michigan
Posts: 8,293
Received 1,476 Likes on 801 Posts
Default

Originally Posted by bck
Some of the rock crawler guys have a slightly different setup that accomplishes the same thing as the j tubes without the worry of siphoning fuel out of the bowls. If that's a concern of yours...
Some of us tend to run like rock crawlers only at a much higher speed. I've been near every angle in and out of the water but not over backwards as of yet and only stuffed one boat. Lol. I like j tubes cause they make it easy to carry your carb. Hah
getrdunn is offline  
Old 03-20-2017, 07:49 PM
  #14  
bck
Charter Member#568
Charter Member
 
bck's Avatar
 
Join Date: Dec 2000
Location: Western N.Y.
Posts: 2,171
Received 16 Likes on 14 Posts
Default

Even though there isn't a requirement for a j tube, there is a requirement that the carb not be able to leak fuel into the bilge. The Holley style vent system which would normally leak into the bilge accomplishes this by means of the j tube. Anyway that's my .02
__________________
Straight bottoms and flat decks
bck is offline  
Old 03-20-2017, 07:52 PM
  #15  
bck
Charter Member#568
Charter Member
 
bck's Avatar
 
Join Date: Dec 2000
Location: Western N.Y.
Posts: 2,171
Received 16 Likes on 14 Posts
Default

Originally Posted by getrdunn
Some of us tend to run like rock crawlers only at a much higher speed. I've been near every angle in and out of the water but not over backwards as of yet and only stuffed one boat. Lol. I like j tubes cause they make it easy to carry your carb. Hah
Some people are concerned that the airflow by the j tubes will siphon fuel from the bowls even in an upright position. I don't know if this is a valid concern, but if it is the tubes the rock crawlers use prevents it.
__________________
Straight bottoms and flat decks

Last edited by bck; 03-20-2017 at 08:02 PM.
bck is offline  
Old 03-20-2017, 07:58 PM
  #16  
Registered
iTrader: (7)
 
Join Date: Feb 2009
Location: NW Michigan
Posts: 8,293
Received 1,476 Likes on 801 Posts
Default

Originally Posted by vintage chromoly
There is no USCG requirement for j tube carb vents.
Although was a big deal at one time to the CG I've yet to get cked for J tubes in over 30 yrs of boating and been stopped numerous times.
getrdunn is offline  
Old 03-20-2017, 07:59 PM
  #17  
Gold Member
Gold Member
iTrader: (3)
 
vintage chromoly's Avatar
 
Join Date: Sep 2011
Location: cleveland ohio
Posts: 2,634
Received 12 Likes on 6 Posts
Default

Here is exactly what the CFR reads:
vintage chromoly is offline  
Old 03-20-2017, 08:00 PM
  #18  
Registered
iTrader: (4)
 
Rookie's Avatar
 
Join Date: Jan 2003
Location: Grand Rapids, MI
Posts: 5,675
Received 1,188 Likes on 566 Posts
Default

http://www.uscgboating.org/assets/1/...YC.1002.01.pdf

It's all here. Start around page 40.
Rookie is offline  
Old 03-20-2017, 08:02 PM
  #19  
Registered
iTrader: (7)
 
Join Date: Feb 2009
Location: NW Michigan
Posts: 8,293
Received 1,476 Likes on 801 Posts
Default

I think we get it VC. You've been doing your homework. What do they have to say about nude chicks aboard?
getrdunn is offline  
Old 03-20-2017, 08:04 PM
  #20  
Registered
iTrader: (2)
 
Join Date: Aug 2010
Location: MCHENRY IL
Posts: 744
Likes: 0
Received 1 Like on 1 Post
Default

If it's stuck a little heat with a torch will get it moving...LOL.
COOPS is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.