Cool the Airbox Stingray/Excell Cold Air Intake Mods

[cannondale27]

Final test. She is all wrapped. Wish I wouldnt have had to take that divider out but see how it goes.

 

[cannondale27]

Screw it. This works! 120mph gps easy.

 

[cannondale27]

Guys this was a fresh install. We made minor clutching changes and it is right on. 120mph and rips your arms off the whole way getting up to it. Now my quest seems pointless. Only managed 103 today. Bummed but conditions killed my turd once again!

 

[TD Max]

Guys this was a fresh install. We made minor clutching changes and it is right on. 120mph and rips your arms off the whole way getting up to it. Now my quest seems pointless. Only managed 103 today. Bummed but conditions killed my turd once again!

Have you thought about taking some of those extra wheels off once to see what happens?

 

[cannondale27]

TD I dont need clutching aeros or suspension. Just need more power. The wheels come in handy for the dirt road speed runs! All kidding aside dropping suspension and getting rid of the stupid quiet track and yes those wheels would help 2-3mph I bet but Power can overcome all that very easily. This sled rides and handles so well it could easily handle a real true 100mph right now I have a 90-95mph modded sled with that perfect run up to a hundred or more. Just keep sticking more $ in it till I say holy crap! Like that turbo I rode today.

 

[TJ-R]

My version of the Stingray mod.

Some numbers I came up with regarding the stock open.

• The bore of the throttle body intakes is 45mm each and the stock intake horns have a similar ID. The three rectangular air box intake openings are 25mm x 52mm.
• The surface area of the three 45mm ID carb intakes is 4,767 sq mm and the airbox intake holes are 3,600 sq mm.
• Therefore the stock airbox opening is 25% smaller.

Using a small cut off wheel I carefully opened up another 1,200 sq mm so it is now slightly larger than the intakes. Note with the cutoff wheel run a vacuum cleaner nearby to keep it cool and suck up dirt and smell; if it gets hot it starts to melt and stinks.

Biggest difference is noise, as the intake noise is now noticeably louder, this was not a goal of mine, but with the MRBP trail can it howls on the climbs. The midrange seems to have a bit more snap, and as Cannondale noted, I also for the first time found the back end breaking loose ever so slightly in the turns; note mine is an un-studded 141.

 

[cannondale27]

Cool! Once you get confident you have the power to break that 141 loose in corners that is really going to be a weapon!

 

[Mattyflem0111]

View attachment 106175

My version of the Stingray mod.

Some numbers I came up with regarding the stock open.

• The bore of the throttle body intakes is 45mm each and the stock intake horns have a similar ID. The three rectangular air box intake openings are 25mm x 52mm.
• The surface area of the three 45mm ID carb intakes is 4,767 sq mm and the airbox intake holes are 3,600 sq mm.
• Therefore the stock airbox opening is 25% smaller.

Using a small cut off wheel I carefully opened up another 1,200 sq mm so it is now slightly larger than the intakes. Note with the cutoff wheel run a vacuum cleaner nearby to keep it cool and suck up dirt and smell; if it gets hot it starts to melt and stinks.

Biggest difference is noise, as the intake noise is now noticeably louder, this was not a goal of mine, but with the MRBP trail can it howls on the climbs. The midrange seems to have a bit more snap, and as Cannondale noted, I also for the first time found the back end breaking loose ever so slightly in the turns; note mine is an un-studded 141.

Did you play with clutch to eliminate hitting rev limiter? If so, what exactly did you do? I'm not sure what route I should go.

 

[stingray719]

View attachment 106175

My version of the Stingray mod.

Some numbers I came up with regarding the stock open.

• The bore of the throttle body intakes is 45mm each and the stock intake horns have a similar ID. The three rectangular air box intake openings are 25mm x 52mm.
• The surface area of the three 45mm ID carb intakes is 4,767 sq mm and the airbox intake holes are 3,600 sq mm.
• Therefore the stock airbox opening is 25% smaller.

Using a small cut off wheel I carefully opened up another 1,200 sq mm so it is now slightly larger than the intakes. Note with the cutoff wheel run a vacuum cleaner nearby to keep it cool and suck up dirt and smell; if it gets hot it starts to melt and stinks.

Biggest difference is noise, as the intake noise is now noticeably louder, this was not a goal of mine, but with the MRBP trail can it howls on the climbs. The midrange seems to have a bit more snap, and as Cannondale noted, I also for the first time found the back end breaking loose ever so slightly in the turns; note mine is an un-studded 141.

Always happy to see my ideas tried in a different manner. Close enough to mine I would imagine no noticeable difference better or worse. Enjoy!

 

[TJ-R]

Did you play with clutch to eliminate hitting rev limiter? If so, what exactly did you do? I'm not sure what route I should go.

I did the clutching on the cheap mod, works real well especially initial engagement. Smooth, no belt slip.