January 25th, 2012, 07:54 PM | #1 |
ninjette.org guru
Name: andrew
Location: oakdale california
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Who's taken off their Kleen Air System?
I'm talking about this DIY: http://www.ninjette.org/forums/showthread.php?t=9948
Just curious on who's done it? I have a slip on mgp growler, and today I shimmed my carbs w/ 2x 3mm washers and took off the CA emissions junk. I'm just wondering what the whole Kleen Air System does, and if it would be beneficial to take it off? Also what would taking off the snorkel do? |
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January 25th, 2012, 08:50 PM | #2 |
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January 25th, 2012, 09:53 PM | #3 |
ninjette.org member
Name: Tom
Location: Park Ridge
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first off alex do you realize that he has the same link in his post.
second walty87, the link you posted has all the information in it from what i got it is equivalent to the EGR valve in cars aka more "emissions junk" it dumps exhaust in to the intake. therefore cooling the exhaust. what CA emissions junk did you remove as far as i know the Kleen Air System and the stock muffler is the only emissions on the bike. since you have a aftermarket muffler you won't have any issue with it. I installed the plate that is in post 24 still haven't finished working on my bike won't know until spring how it will run. and really all this info is in the first 2 paragraphs in the link, there even bold. what isn't in the post is that it might improve fuel economy and power. but in theory it would make the engine run hotter, too. |
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January 25th, 2012, 10:41 PM | #4 | |
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Quote:
The ca emissions thing I was talking about can be seen here: http://www.ninjette.org/forums/showthread.php?t=22296 I think it comes on CA Bikes only? idk. I don't have a full system on my bike, I only have a slip on. So would taking off the Kleen air system be a good idea? Like I said, I did do the shim... |
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January 26th, 2012, 08:07 AM | #6 |
Your Lord Funny Bits
Name: Darrell
Location: Fort Collins
Join Date: Jan 2012 Motorcycle(s): 2011 Kawasaki Ninja 250 Posts: 95
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But with only a slip-on, don't you run the risk of clogging the catalytic converter that's in the stock piping? (Haven't looked, just remember seeing that somewhere)
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January 28th, 2012, 06:41 PM | #7 |
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I skipped right past that....
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January 28th, 2012, 06:46 PM | #8 |
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January 28th, 2012, 11:55 PM | #9 |
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I read that too, but I'm pretty sure it was with a stock can. There's plenty of people here with a slip-on and the kleen system gone. If there was an issue, we would have heard something about it in larger quantities before now.
@walty87 removing the snorkel allows a little more air into your airbox. More air = more gas/air mix. More gas/air mix = more power. The main jets on 250's are balls rich, so adding that little extra little amount of air leans the mixture a little bit so it's less rich, and it pulls just a little harder. It also sounds great under throttle and gives the exhaust note a new texture. |
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January 29th, 2012, 08:27 AM | #10 | |
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Name: David
Location: Loves Park, IL
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For what it's worth, I've been running a slip-on (DanMoto) with the KleenAir system without any need to remove it. If you do remove it, though, don't just block off the hose coming from the engine head, make sure you get a breather, otherwise you'll create an area with excess pressure that can just blow seals.
Quote:
Regardless, like I said before, I run a slip-on with the kleen air system without any issues, and have been for quite some time now. I saw no reason to take it off, though, as the popping/bubbling I have is only during hard deceleration, and it wasn't to the extent of backfiring so it didn't bother me. |
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January 29th, 2012, 10:37 AM | #11 | |
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Quote:
I'm assuming that whenever someone makes an intake change, they're also going to change their jetting, because if they didn't the intake change would be pointless and negatively impact the engine. Under that assumption, more air = more usable gas+air mix because there would always the proper amount of fuel in the mix A 14.7 AFR doesn't mean the best performance. It only means that all the air and all the fuel put into the mix will both be entirely used up. Go look at a dyno print-off. The AFR at 10k-14k rpm is a lower number, usually in the mid to high 13's. Adding an excess of gas gives a smoother and more responsive throttle, and it also helps cool the valves. |
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