KZ1100 HEAD ON KZ1000J

  • kz1100warrior
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KZ1100 HEAD ON KZ1000J

30 Nov 2011 04:54
#490799
Please can someone inform me, can you put a KZ1100 head directly onto a KZ1000J cyclinder with out changing much, valves etc ....Head is a KZ1100 A1 and the bottom is a KZ1000J.

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  • mtbspeedfreak
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 05:08
#490800
No.
The first example is simply a big bore Z1 900. This engine came with a kick starter and electric starter. The cam chain tensioner hole in the cylinder block is a rectangle. The ccs cast on the cylinder is 1015. The later "J model" has no kick starter, and the cam chain tensioner hole in the cylinder block is round. The cc's cast on the cylinder is 998. This engine also became the GPZ1100 in 1981 and '82, and virtually everything between them is the same. (The '83-'84 GPZ1100 was changed). Cylinder blocks and lower engine cases are NOT interchangeable. You can not put a J model cylinder on an older style lower end, and vise versa.

www.aperaceparts.com/tech/techkz1000.html
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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  • mtbspeedfreak
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 05:39
#490803
Actually, I take that back- I was looking at cylinder blocks. It looks like it's possible to swap heads, people put J heads on KZs all the time. Why would you want to out a KZ head on a J model though?
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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  • otakar
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 09:38 - 30 Nov 2011 09:39
#490812
Sure, you can swap those heads. They are 100% identical in every way with exception possibly of color. The KZ1100 A1 IS a "J" motor with a shaft on it instead of a chain and sprocket. The heads are the same.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 30 Nov 2011 09:39 by otakar.
The following user(s) said Thank You: wireman

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  • Mookachacka
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 09:52
#490813
kz1100warrior wrote: Please can someone inform me, can you put a KZ1100 head directly onto a KZ1000J cyclinder with out changing much, valves etc ....Head is a KZ1100 A1 and the bottom is a KZ1000J.

I would rather put the KZ1100 cylinder block on the KZ1000 J motor, going from 998 cm3 to 1089cm3.

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  • otakar
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 12:41
#490828
Mookachacka wrote:
kz1100warrior wrote: Please can someone inform me, can you put a KZ1100 head directly onto a KZ1000J cyclinder with out changing much, valves etc ....Head is a KZ1100 A1 and the bottom is a KZ1000J.

I would rather put the KZ1100 cylinder block on the KZ1000 J motor, going from 998 cm3 to 1089cm3.

x2
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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  • TeK9iNe
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 15:07
#490839
Mookachacka wrote:
kz1100warrior wrote: Please can someone inform me, can you put a KZ1100 head directly onto a KZ1000J cyclinder with out changing much, valves etc ....Head is a KZ1100 A1 and the bottom is a KZ1000J.

I would rather put the KZ1100 cylinder block on the KZ1000 J motor, going from 998 cm3 to 1089cm3.

Ditto + a nicely ported head with some 410 cams and... whoops there goes my inheritance lol.

B)
Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)

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  • MFolks
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Re: KZ1100 HEAD ON KZ1000J

30 Nov 2011 16:11
#490851
Read this: www.aperaceparts.com/tech/techkz1000.html
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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  • kz1100warrior
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Re: KZ1100 HEAD ON KZ1000J

01 Dec 2011 04:08
#490930
Thanks for the response, the reason, is that my block from the 1100 is kaput, my head is fine, on my 1000 motor my cam bolts are kaput, so want to just swap out heads , money tight before xmas, and need to get bike on road.....thanks all

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  • Kitten Tooth
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Re: KZ1100 HEAD ON KZ1000J

04 Dec 2011 21:35
#491559
id love to put a J head on an 80 and down 1000/900 cause of the kickstarter. So many rides where i had to push 600 pounds of iron up the street just to get going when my starter took a dump :D
1981 Kawasaki KZ1000-K LTD
1983 Suzuki GS300L-D
1982 Suzuki GS300L-Z sold:(
1976 KZ400D3
1973 Z900... I WISH

DO A BARREL ROLL!!

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  • TeK9iNe
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Re: KZ1100 HEAD ON KZ1000J

07 Dec 2011 15:12
#492044
Kitten Tooth wrote: id love to put a J head on an 80 and down 1000/900 cause of the kickstarter. So many rides where i had to push 600 pounds of iron up the street just to get going when my starter took a dump :D

:laugh: :laugh: :laugh: Fix it right the first time... kidding.

B)
Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)

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  • lucienmaier
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Re: KZ1100 HEAD ON KZ1000J

01 Aug 2013 13:50
#599419
So I currently have a kz1000j motor.
Want to swap a bad jug for a 84 gpz1100 jug with pistons
is that doable?
--1981 Kz1000m CSR--
--Converted to 1100CC---

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