[Strabo]

Would this work for my oem carb, with a jet kit only?

☺ Can you show me and Rat how?

 

[TINKEN]

Would this work for my oem carb, with a jet kit only?

☺ Can you show me and Rat how?

Yes, it will work on a stock carburetor and I am happy to help anyone foolhardy enough to try it.

However, in my opinion, you are wasting your money and time. The stock carburetor is limited and problematic. On your engine especially, you should seriously invest in a HSR carburetor first. Used HSR carburetors are pretty easy to find, or performance cycles sells a 42HSR for about $265. Then the Intelijet is an easier addition due to the long bowl nut and drill locations for the HSR.

Yost Performance has made their Power Tube kit for the HSR for as long as I can remember. This modifies the main jet in the HSR to atomize fuel finer, resulting in up to 10hp. The fuel is adjusted by Mikuni jets in the main location. The intelajet does the same exact thing, except that it is infinitely adjustable and without opening the carburetor.

 

[TINKEN]

There is a less expensive version called the Powerjet. I believe it sells for $65. There is no remote control, but you still get the dial-ability of a Lectron powertube.

When tuning with one of these jets, your main and needle jets need be be reduced 4 jet sizes (leaner), for example if you use a #145 main like me, you will need to install a #125.

 

[TINKEN]

Lectron and some Mikuni carburetors come with the fuel tubes from the factory. I hear they are producing the model below up to 58mm now.

 

[oilcan1001]

After having a long conversation with the inventor, I picked up a torque wing. Many companies make these, but this one goes on the exit side of the carburetor and works well for both carburetors and fuel injection. It is especially useful on the HSR45 because it increases the velocity of passing air at low rpm.

Motocross Action Magazine gave it a 5 star rating when used on the exit side of a KTM throttle body.

I searched their website pretty well but cant find anything regarding EFI.

 

[TINKEN]

Motorcross Action Magazine added the Torque Wing to the exit side of a throttle body. Turbulance is greater when you have a butterfly opening since the air is spilling through from the top and the bottom versus just the bottom of a slide carburetor.

Lonn probably hasn't upated his website with the new information. I would give him a call (Lonn Peterson). 320-597-2700

 

[TINKEN]

There's a lot of turbulence with efi rolling off the butterfly on the top and the bottom. But you should give Lonn Peterson a call and let him explain it better.
320-597-2700

 

[TINKEN]

Fuel Injected Quad Flow Torque Wing

NEW!!! Designed exclusively for throttle bodies. This new piece controls air all the way to the butterfly valve where it matters most. Reduces turbulence, resulting in smoother power, less off idle jerkiness, and increased torque. Available for all fuel injected dirt bikes.

D I C Ksracing.com
http://www.****sracing.com/motorcycle_specialty_parts/fuel_injected_quad_flow_torque_wing

 

[oilcan1001]

Thanks Tinken !

 

[TINKEN]

Thunder Products Quad-Wing showed up yesterday. Understanding the mechanics behind this stainless steel wing leads me to believe that it shrinks the HSR42 down near a 21mm carburetor at low to mid throttle. One of the reasons why I chose the 42mm over the 45 was the increased bottom end from increased flow. This may very well make the 42 & the 45HSR really come alive on the bottom, matching it's power up top. I have a lot of mods to do.

Special thanks to to Lonn Peterson of Thunder Products for rushing this out to me for my HSR42! :headbang:

 

[serioustony]

That looks great.

 

[TINKEN]

I spent about a week testing the new QuadWing in my HSR42. Drove about 50 miles through various terrain prior to installing in order to get a better feel for the change.

Install was pretty simple, I used a dremel tool to cut the small slots in the front side of the carburetor. There are four tabs you must bend upward, I alternated from side to side and then tapped lightly with a hammer to create 90° bends in the wing.

I will note that prior to install, the transition from idle to 50% throttle was pretty erratic and left me hanging once or twice on steep trails. This was not the case after install. Power is completely solid from idle to top speed, linear like fuel injection. Any null or dead spots in the throttle are gone and there is a pretty noticeable increase in power in the low rpm stages. This add on combined with my Yost powertube made an incredible change in performance. Power feels very similar to a 686 with cam and exhaust, all from a stock 660, ha! Fuel mileage seems to be up as well. :headbang: