650/X-2 Flow control valve on 650sx?

[GrantWarden]

Has anybody used a Jetworks flow control valve on a 650? If so, gains, pressure you set it at, etc would be helpful.

 

[GrantWarden]

Bump? anybody?

 

[whitca]

I did when running a west coast pipe. I put it all on as a package so I can't narrow down exactly how much improvement the flow controller yielded. I ran the non adjustable and used one of the washer/spacers that was provided. My waterbox was very dry and for what it was, that ski snapped off the bottom pretty well.

 

[Dutchie]

what does this unit do? control the water in the exhaust? does it help inprove ? please explain the principle (A)

Thanx

 

[whitca]

It's a cylinder with a spring that pushes a ball into a cone at one end. The water pressure opens the ball (where/when depends on what pressure your cooling system is pushing at a particular rpm) and lets water into the stinger of your exhaust. You can add washers to stiffen the spring and require more pressure to open it. With little to no water entering the stinger at idle, the engine doesn't need to push excess water out of the waterbox which gives better throttle response off idle. As your rpms increase, more water is let in to control temperatures. Art makes an adjustable (pro model) controller and non adjustable. The pro model doesn't require the washers, you just twist it tighter to add tension to the spring.

 

[Dutchie]

That sounds real sweet. I will be puttin that on my wish list ! Thank you verry much

 

[tomthewakeboarder]

It's worth the $40 for it I'd say.

 

[Octane_114]

it's well worth the money, improves low end throttle response. first 60ft, or any time you're on and off the throttle.