The Honda PCX / Forza / ADV150 / SH Forums

Stock CVT Limits are flow for cooling in the long run you'll wear out the clutch faster and go through cvt belts faster... The idea is to help ventilate and clean up the CVT Case

Tools
1. Angle grinder with only a cut off disc (Don't use a regular grinder disc or you'll destroy the metal quick!)
2. Electric DA / Orbital Sander
3. Flat metal file
4. IPA (Your choice of vender, I prefer Stone or Ballast Point) =P

Stock CVT with plastic intake removed


Grinding off the stock plastic air vent mounting tabs





Mounting peg removed will go back and use a DA Sander to flush out the rough grinder marks


Removing the lip



I use a normal cut off disc and use it as a grinder, i find it really good for finer grinding work. I'll then go through and knock it down as much as possible then hit it up with a flat file, and then the DA/Orbital Palm sander.



100% Cleaned up and blended in! Woot! Looks nice!



Now enough with making it look purdy! Time to cool that bissssh down!



Front inlet holes



Crappy paint jobbers, will be power coated later on when I get time to do so.



So why you ask did i do all this crap right? well simple the stock cvt is for regular riding, but once you start introducing mods, especially to the cvt system you'll increase a ton of heat under the cover. Also the stock system really doesn't vent well. I even expect this mod to make belts run cooler and last a little longer. I always change belts at 5k. Plus the fact i'm doing 60 miles a day the insurance to keep a cooler belt is more ideal in my situation.

i did that exact thing on my elite 80. the cvt cover went from too hot to touch on a long ride to barely warm and never had a problem with the belt.

Stock CVT Limits are flow for cooling == Limits AIR flow... mehhh can't edit the post

i was actually thinking of something similar when i had to replace my belt last weekend thinking that might have been part of the cause of my yumi belt going so early, well that and long highway rides

mikelx5 wrote:i was actually thinking of something similar when i had to replace my belt last weekend thinking that might have been part of the cause of my yumi belt going so early, well that and long highway rides

im doing 30 miles one way to work all freeway, then 30 back home.

yeah my girl is 46 miles from me

Like the mod dem0nk1d. Here in Missouri we get lots of wet weather and I'm not against riding in it. I need to look into a possible electric fan to push or pull air through the cover. That or some way to increase airflow without opening it too much to the elements. I know that moisture would probably be better than heat on the belt though.

You could use these?

You still have to drill holes. Called Airbox filtered vents

Where do you get them?

Ahh Swiss cheese
I like the mod, but I ride in gravel/dirt/twigs and I probably don't need that crap in my cvt.
I've thought about hollowing out the cvt cover... because it is heavy... only have removed the 2 long bolts thus far... so much lighter now

Mgalutia88 wrote:Where do you get them?

There are a myriad of places selling them just surf for <Airbox filtered vents>

waspmike wrote:

Mgalutia88 wrote:Where do you get them?

There are a myriad of places selling them just surf for <Airbox filtered vents>

you can use them they are too deep would hit the belt or clutch bell. just be a man and run without them. if anything there will be limited dust because of the ventilation, and if dust went in, it would come directly out. also you seen how much belt dust these things create. =P

vents
http://www.rockymountainatvmc.com/p/142 ... -Box-Vents

Yamaha CVT scooters here have quite an elaborate CVT ventilation system most include some form of rubber "snorkel", some forward facing.

here's a SX 125



hers's another a Fino 115



yet another 125



A search of a vacuum cleaner parts store or auto parts store might yield a suitable rubber piece that could be mounted on top of the crankcase cover.

I use to have a Zuma 125 before it got stolen 10/17/2013 Never Forgotten . The first mod the Zuma guys do is remove the foam filter in the CVT case creates more issues than what it's intended for. The whole filter thing is over rated. I use to run my Zuma in the rain, the only failure i had was the intake snorkel was picking up water... thus free steam cleaning and fouling the plugs, when raining.

oh on a more technical note, do note remove the cvt case where the bearing is pressed into the rear of the cvt case. this is used to stabilize main drive shaft in the transmission.