Group K fuel -air seperator installed

[billglass]

I replaced the tubing of the fuel-air seperator and external fuel pump in case anyone wanted to see it installed while motor is out. I definately like them. It removes all those little hicups ( when air enters the fuel line)when low on fuel and hitting waves and curving tight turns.
Here's and article on them..: http://www.groupk.com/sep.htm

 

[Mdavies_02]

Interesting. Anyone else running these? Is it that noticeable or aimed more at reducing piston wear.

 

[billglass]

I can't comment on the piston wear aspect. Although my head is off with original pistons and the cylinders have no scoring. I noticed the difference in riding. rough water or when jetski is on it's side when you don't have a full tank. No hicups from the air in the line. Group K reccomend them to keep from the lean moments when air gets in the line. Anyways, I never seen anyone write up about these or anyone else using one so I thought I'd post it. . Is it a necessity. I'd say no. Is it nice to have, I'd say yes. If you don't have a hicup problem or one of those weighted gas lines for the fuel tank, not sure you would benefit. I have the weighted gas tank line and this...

 

[OCD Solutions]

They were absolutely necessary on the Seadoo 951's back in the day. Just way too much aeration in the fuel making fuel metering somewhat erratic and lean conditions way too prevalent. I had a couple extras and researched putting one in my SJ but all the advise at the time said it wasn't necessary.

Of course those same people advised against me putting a 144 mag in my SJ because it was to much load. These days you're a retard if your not running a 148 or 155 in a stock boat. SMH

 

[catpower]

This has stirred in my head to for some time. Why do you need a second fuel pump? As illustration shows the small canister will eliminate air as the carb mounted fuel pump constantly feeds fuel from return line and tank. Any air would be sent back to top of fuel tank.

 

[kevbo]

This has stirred in my head to for some time. Why do you need a second fuel pump? As illustration shows the small canister will eliminate air as the carb mounted fuel pump constantly feeds fuel from return line and tank. Any air would be sent back to top of fuel tank. View attachment 297851

The idea is to create a continuously overflowing reservoir close to the carb. A second pump is needed to push any collected air back to the tank, otherwise it would all stay in the reservoir.

 

[Quinc]

Can you even get these anymore?

 

[kevbo]

I made mine, I incorporated an internal standoff and a drain so that it separates water as well.