What's the purpose of...

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30 Jul 2021 08:34 - 30 Jul 2021 08:36 #852843 by Claude.
What's the purpose of... was created by Claude.
... the cover installed over (or under) the oil filter?
In my 20+ years or maintaining my previous ZX-11, I always installed the said cover over the oil filter. I was surprised to see it goes under the oil filter on my KZ750L but that goes over on my KZ1000J (as on ZX11). Every other parts are about the same so I'm wondering why and what is the purpose of the shown cover.
Pictures comes from OEM parts manuals.
Thanks! 

2017 Versys 1000
1982 KZ1000J2
1983 KZ1000J3
1982 GPZ1100
1983 KZ750L
1982 KZ1000J2 (another one!)
2017 Yamaha FZ07
Last edit: 30 Jul 2021 08:36 by Claude..

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30 Jul 2021 08:53 #852844 by loudhvx
Replied by loudhvx on topic What's the purpose of...
Ahh.  What was the purpose of the  Nazca Lines ?.  Who built the pyramids and how?  Stonehenge?

Those questions pale in comparison to the Kawasaki filter cup mystery.  And some bikes use the same setup with no cup at all.

Robert Stack never got to the bottom of it despite highlighting it in no less than 4 episodes of Unsolved Mysteries.
The following user(s) said Thank You: rstnick, DOHC, DoctoRot, Robb2018

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30 Jul 2021 09:47 #852846 by TexasKZ
Replied by TexasKZ on topic What's the purpose of...

Ahh.  What was the purpose of the  Nazca Lines ?.  Who built the pyramids and how?  Stonehenge?

Those questions pale in comparison to the Kawasaki filter cup mystery.  And some bikes use the same setup with no cup at all.

Robert Stack never got to the bottom of it despite highlighting it in no less than 4 episodes of Unsolved Mysteries.
Yup, that pretty much sums it up.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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30 Jul 2021 12:05 #852856 by hardrockminer
Replied by hardrockminer on topic What's the purpose of...
I'm going to guess and say that the purpose is to drive oil through the filter before it moves into the lube system.  Without the cup (on the 1000) oil could potentially flow through the filter and on to the lube system.  

I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.

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30 Jul 2021 12:25 - 31 Jul 2021 06:58 #852857 by martin_csr
Replied by martin_csr on topic What's the purpose of...
I don't know. I would have guessed the fence is supposed to deflect the oil entering thru a galley to keep the oil pressure from deforming the filter or something.  The KZ650 oil pan has an orifice in the oil pan & the fence is fitted at the bottom of the oil filter.  I've never looked at the 1000 setup.
Last edit: 31 Jul 2021 06:58 by martin_csr.

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  • Scirocco
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30 Jul 2021 12:34 - 30 Jul 2021 12:34 #852860 by Scirocco
Replied by Scirocco on topic What's the purpose of...
I´ve been ridden my Z1B for more than 25 years without the cover on top or bottom of the filter with no problems.
For me there there no technical advantage to use this oil filter bucket cover in the future, because KHI didn´t explain anything about it.
If you feel safer with the bucket(s), so put one on top and bottom, give it a try and report here......
Last edit: 30 Jul 2021 12:34 by Scirocco.

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30 Jul 2021 12:37 #852861 by Mikaw
Replied by Mikaw on topic What's the purpose of...
Oops, I didn’t even know I was supposed to have one. 

1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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30 Jul 2021 12:43 - 31 Jul 2021 07:01 #852862 by martin_csr
Replied by martin_csr on topic What's the purpose of...
From EB pics the 1000 oil pan doesn't have an orifice, so the oil inlet must be via the crankcase, hence the fence at the top.  My guess is that the barrier isn't needed in most cases but adds an extra level of protection for the filter.  Some oil filters have a mesh screen around them & don't have the fence.
Last edit: 31 Jul 2021 07:01 by martin_csr.

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30 Jul 2021 12:49 #852864 by willemZ900
Replied by willemZ900 on topic What's the purpose of...
Me to never used the cover on my Z1B in the last 40 years. 

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  • Street Fighter LTD
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30 Jul 2021 14:07 #852866 by Street Fighter LTD
Replied by Street Fighter LTD on topic What's the purpose of...
I dont recall my bike having one when new. 


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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30 Jul 2021 15:13 - 30 Jul 2021 15:15 #852869 by Dr. Gamma
Replied by Dr. Gamma on topic What's the purpose of...
The '73 to '80 900/1000 kickstart motors NEVER used that oil filter cup.

Kawasaki started using them on the non-kickstart 1000J model motors in '81.

1972 H2 750 Cafe Racer built in 1974.
1976 KH400 Production Road Racer.
1979 Kz1000 MK. II Old AMA/WERA Superbike.
1986 RG500G 2 stroke terror.
1986 GSXR750RG The one with the clutch that rattles!

Up in the hills near Prescott, Az.
Last edit: 30 Jul 2021 15:15 by Dr. Gamma.

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30 Jul 2021 15:17 #852870 by daveo
Replied by daveo on topic What's the purpose of...
According to the KZ1100 Shaft FSM that cover is a fence.

 

 

1982 KZ1100-A2

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