bike runs smoother after breather bypass??

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#21

03-21-2023 | 06:45 PM

TUCCI

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Joined: Jun 2011

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From: Glendale AZ

Quote:

Originally Posted by RG Pilot

I did that same exact thing on my last bike with 103 HO. Hardly got anything out of the breather. These M8’s aren’t quite that easy, with the drilling and tapping that’s necessary. I’m still not completely sold on the concept of external breathers though. I’ve had them on a few performance cars, just because it seemed like a good idea, but never saw much oil in the can at all. Probably would become more critical when the miles get high. The other thing too is that venting the breathers externally makes the crankcase vent passively instead of actively by vacuum. I wonder how much the crankcase pressure is affected between stock and vented?

After I got this bike and took a look at the plugs to see where the mixture was I opened up the air breather and there was a lot of oil running down the TB. I sprayed it out real good then did my bypass. It's nothing pretty but, it's tucked away nicely and working so that's all I needed. I was glad I didn't have to drill and tap hose fittings this time as I just want to ride.
There's a puffing action that occurs as small as it might be. My old 80ci EVO used to puff much more but it's the same concept. When I dab the outlet that's under the bike with my finger I feel some oil on it which tells me it's working.

Last edited by TUCCI; 03-21-2023 at 06:49 PM.

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RG Pilot (03-22-2023)