Turning the pollution cap into a crankcase vent
- 531blackbanshee
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Re: Turning the pollution cap into a crankcase vent
21 Nov 2012 10:40
skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!
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1976 kz 900 x 3
i make what i can,and save the rest!
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- donthaveakawman
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Re: Turning the pollution cap into a crankcase vent
21 Nov 2012 20:59
so what you are saying is to reroute the intake to the exhaust from the airbox to the crankcase vent?
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- kzz1king
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Re: Turning the pollution cap into a crankcase vent
22 Nov 2012 12:29
I thought I already asked this but do not see it. Does additional venting from the bottom end negate having to vent the top end? I Vented through fill plug on mine with no problems.
Wayne
Wayne
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
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- Patton
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Re: Turning the pollution cap into a crankcase vent
22 Nov 2012 15:18Am thinking there's no separate venting for the bottom end and top end, because they're connected by the cam chain tunnel between the crankcase and cam area.kzz1king wrote: I thought I already asked this but do not see it. Does additional venting from the bottom end negate having to vent the top end? I Vented through fill plug on mine with no problems.
Wayne
Good Fortune!

1973 Z1
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- mark1122
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:09kzz1king wrote: I thought I already asked this but do not see it. Does additional venting from the bottom end negate having to vent the top end? I Vented through fill plug on mine with no problems.
Wayne
Yes. where u vent is not that important, .just find a spot that is the least likely to spu oil.
i think mother kaw hfound a good spot, it just need to be bigger.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
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- kzz1king
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:28mark1122 wrote:kzz1king wrote: I thought I already asked this but do not see it. Does additional venting from the bottom end negate having to vent the top end? I Vented through fill plug on mine with no problems.
Wayne
Yes. where u vent is not that important, .just find a spot that is the least likely to spu oil.
i think mother kaw hfound a good spot, it just need to be bigger.
I modified a oil fill cap with a small mechanical baffle and a 1/2 inch nipple. Does not spit anything out. Have to pull hose off to remove cap but not a biggie.
Wayne
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
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- wireman
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:30
Picture?

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- kzz1king
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:32I will pull the cap tomorrow and take a pic if you promise not to laughwireman wrote: Picture?

Wayne
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
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- wireman
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:42
At the same time like Ive said before if you have to start adding lots of extra venting just to keep oil from blowing out of a motor its time to do a leak down test to make sure youre not just blowing everything past worn rings or a worn bore.
On a high rpm racing engine thats spinning its way down the track at 10,000 rpms its understandable that things getting stirred up internally pretty violently,but on the typical street bike thats just being jumped on once in a while its not such a big issue.
If youve got a streetbike thats blowing gaskets out to vent itself and the stock crankcase vent isnt clogged up youve got internal issues and the extra venting is just a band aid.
On a high rpm racing engine thats spinning its way down the track at 10,000 rpms its understandable that things getting stirred up internally pretty violently,but on the typical street bike thats just being jumped on once in a while its not such a big issue.
If youve got a streetbike thats blowing gaskets out to vent itself and the stock crankcase vent isnt clogged up youve got internal issues and the extra venting is just a band aid.

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- wireman
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:43As long as it gets the job done! :laugh:kzz1king wrote:I will pull the cap tomorrow and take a pic if you promise not to laughwireman wrote: Picture?
Wayne
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.
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- kzz1king
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:57 - 23 Nov 2012 01:00
double
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
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Last edit: 23 Nov 2012 01:00 by kzz1king.
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Re: Turning the pollution cap into a crankcase vent
23 Nov 2012 00:57Attachment Picture175.jpg not found
Attachment Picture180.jpg not found
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
Home built KZ1000 turbo setup
www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build
www.kzrider.com/forum/11-projects/532489-74-z-makeover
Attachments:
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