icarus
Expert Class
Posts: 344
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posted September 10, 2008 08:12 PM
Crankcase vent
Has anyone disconnected the vent tube from the crankcase to the air box as a modification? If so, did you notice any changes good or bad. Thanks.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted September 10, 2008 10:04 PM
hook the crankcase up to the air injection system, and plug the air box to air injection on the exhaust side of the valve cover.
The exhaust will draw out the positive crank pressure!
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icarus
Expert Class
Posts: 344
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posted September 11, 2008 03:25 PM
Dubious, are you referring to the port in the air box that gets plugged when you install
a Brock's exhaust? I'm trying to get a good mental picture of your description as I am at
work right now and can't look at my bike. I will look at my manual tonight to get a better
idea. Have you done this on your bike? Thanks.
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Nelson Taylor
Zone Head
Posts: 927
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posted September 11, 2008 09:21 PM
Can someone who has brocks system elaborate on this.
I haven't heard about this deal Dubious is talking about.
Are there any gains to doing this???
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nczx14
Expert Class
Posts: 108
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posted September 12, 2008 03:00 AM
 Edited By: nczx14 on 12 Sep 2008 04:03
Nelson, all it is, is pulling the hose out of the airbox and putting a cap in the hole and shove the hose back in the box. Or you can take the hose out get you a 1/2" bolt with some flat washers, little dab of RTV on top and bottom washers and tighten bolt till it just starts to squeeze out the rubber grommet. Then grab hold of the clean air switch and give it a tug to take it out. Unplug the wire and get a piece of 3/8" fuel or tranny hose and put back in place of the switch and your clean air system is pretty much gone. That's the cheap way to block off the clean air system costs about 5 bucks, or you can order a set off Muzzy block off plates that comes with a plug for the air box for about 50. I went the cheap way when I put my new header gaskets in. Nothing too it. It's easier than pulling the flies. As Dubious is referring to he's making the clean air system work as a Positive Crankcase Ventilation or PCV as it's commonly refered too. Pulling a vaccum on the crankcase typical makes a better ring seal.
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1badvespa1400cc
Zone Head
power junkie
Posts: 691
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posted September 12, 2008 06:37 AM
Can anyone take any pics also is it worth the effort?Any hp gains?
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nczx14
Expert Class
Posts: 108
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posted September 12, 2008 10:53 AM
It takes longer to take all the fairings off to get there than it does to take off the clean air system. Can't answer as for the power gains because I'm doing all my mods before I go for a custom map.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 12, 2008 01:47 PM
search " crank case vent mod "
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00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted September 12, 2008 01:56 PM
It has shown 1 to 2 hp on dyno results with zx12s in the past.
I would think the 14 would be similar.
I have it on my 12. I have run 124 mph in the 1/8 mile several times, with stock internal motor, and bolt ons, all motor, no nitrous on the bike at all.
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