Bike aesthetic/mechanical/electrical modifications and general wrenching advice.
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UFO
- Supercharged!

- Posts: 388
- Joined: Thu Nov 30, 2017 5:36 am
- Location: PNW, USA
- Bike(s): '18 H2SX SE
- x 7
- x 28
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by UFO » Wed May 23, 2018 11:38 pm
Full article here:
https://h2sxriders.net/h2-sx-supercharg ... xial-play/
So, I suspect that most dealers aren't even checking this during their "break in service" and the SC is probably the most important component/assembly on this bike...so I did it myself. Very easy.
Not an inspection I would skip. More than likely you are okay, but if your axial play is out of spec now...you get a free new supercharger. If you find it prematurely out of spec later it will probably cost you thousands. Very simple to inspect.
Service limit is <0.020" (0.5mm). Mine measured in at 0.002". Peace of mind.
It's interesting that there are 6 massive holes on the backside of the SC intake. This must cause a lot of bypass of the front intake, as well as adding some pre-heated air that's sucked up from behind the fairing.

Are these the holes so we can hear the chirp at high RPM? Efficiency wise it seems like it would be better to be drawing cool air solely from the front intake at high RPM and high speed.
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cOoTeR
- Supercharged!

- Posts: 1105
- Joined: Fri Dec 15, 2017 3:40 am
- Location: United States
- x 2
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by cOoTeR » Thu May 24, 2018 1:55 am
The holes are for the sound. According to the H2 forum there is no benefit to closing them off if I remember right.
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Stock with airfilter 164whp 84ft.lbs
De-restricted + tuned 213whp 97ft.lbs
Full vandemon exhaust with tune 221whp 99ft.lbs
On Race Fuel 233whp 103ft.lbs
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