[saleemas]

Greetings to all. A friend just had a stutter kit and velocity stacks installed on his 1K gsxr. He says it will improve his hole shot 1000% but couldn't give the mecahnics of how it works. Would someone help me?

G-

 

[87gsxrnut]

Velocity stacks on an FI bike? Interesting.

- Nut

 

[stevie c]

Stutter kit? Velocity stacks?
HUH....?

Can you tell I'm no mechanic?

 

[Gixxerdale]

Velocity Stack. Ran them on my old flat bottom for a while with 2 Holley dbl pumpers, but a Fuel Infected Bike?

Metal cone with a heavy screen as a filter. Only stops the big stuff. Sure wouldn't run them on the street. You'd be suckin in all kinds of grunge!

Here Stevie C

http://images.search.yahoo.com/sear...1.htm&p=velocity+stack&type=jpeg&no=16&tt=600

 

[stevie c]

Cheers mate!
Cleared it up for me,now I know what we are talking about.

 

[87gsxrnut]

I have two sets for my bikes. Short and medium length for the RS series carbs. I never used them on the track because:

1. NO FILTER on these.
2. I ain't good enough to bother. The extra gains I would get from those wouldn't really help me. I need more track time to get my laptimes down, not HPs.
3. My motors weren't in a high-enough state of tune for those to do any good anyway. They would just burn up my valves faster.

Maybe one day I'll build a motor that they will be good for . . . :mrgreen:

I used them on the street ONCE. That was when I was running a real high-compression motor that had been in storage for a LONG time, and I needed to shoot some ether in the intakes to get her to fire. Once I got the motor running good, then I put the filters back on.

- Nut

 

[Clint]

Velocity is velocity. Doesn't matter how the fuel is delivered. Narrower, longer runners improve a/f feeding at lower rpms. It probably knocks something off the high end, though.

 

[saleemas]

Thanks all. i talked to the mechanic and found out the stutter kit is a two stage rev limiter. It's to improve the hole shot. Boy can we get serious bout our toys :twisted:

 

[themeatmanlandry]

I read about velocity stacks once. I think Rowdy's right. I seem to remember that they vary the heights, based on where they want to beef up the power curve.

It would seem to me that this principle would work on EFI as well, but I'm no mechanic.

 

[Gixxerdale]

I think the direct ram air on the Gixxer's is much better than a velocity stack under the tank area. But hey I'm no mechanic.

 

[Adrenalin_Junky]

but pretty damn close eh GixxerDale!