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TOPIC: Looking for kz900 or 1000 exhaust port spacing

Looking for kz900 or 1000 exhaust port spacing 10 Sep 2019 06:30 #810628

  • Daftrusty
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I found a mystery hand-bent Yoshimura exhaust at the junk yard the other day, but now I need to figure out what bike it is for. I have compared it to a Suzuki gs1000 header I have and the spacing is virtually identical, but the Suzuki has a much different downtube angle than the Yoshi exhaust. I know that the Suzuki's have a more forward leaning cylinder block and head, so this leads me to believe this exhaust is for a Kawasaki. But I just need to confirm the actual exhaust port spacing for a kz900 or 1000 exhaust header. If anyone could help me with this I would be very grateful!
Thanks in advance!!

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Looking for kz900 or 1000 exhaust port spacing 11 Sep 2019 05:48 #810685

  • slmjim+Z1BEBE
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On a Z1 head measured with a vernier caliper...
1 - 2 and 3 - 4 = ~94mm.
2 - 3 = ~125mm.

Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1973 Z1 x2
1973 Z1 "The Wounded Z" Resto project
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.

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Last edit: by slmjim+Z1BEBE. Reason: spelling

Looking for kz900 or 1000 exhaust port spacing 13 Sep 2019 07:03 #810800

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slmjim+Z1BEBE wrote: On a Z1 head measured with a vernier caliper...
1 - 2 and 3 - 4 = ~94mm.
2 - 3 = ~125mm.

Good Ridin'
slmjim & Z1BEBE


Thank you!
That certainly corresponds with the measurements I took from the header.

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Looking for kz900 or 1000 exhaust port spacing 14 Sep 2019 10:17 #810834

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Yes, go buy it if you have not yet!!! Tell the Yard you will give him $25 bucks for the rusty thing!
Then sand blast, acid dip, ceramic coat a nice silver or black finish. Then sell it for $400-$500.
That's what I would do. I have no use for one. I would just invest into it!
Just M Opinion
Livin in "CheektaVegas, NY
Still have a Kaw! 76 KZ900 Pro-Street.
Went thru 25 of these in 40 yrs.

And The Old Girl, Harley 75 FLH Electra Glide,
Old faithful! Points ign. Bendix Orig. carb.
Starts everytime!

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Looking for kz900 or 1000 exhaust port spacing Yesterday 07:30 #810865

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z1kzonly wrote: Yes, go buy it if you have not yet!!! Tell the Yard you will give him $25 bucks for the rusty thing!
Then sand blast, acid dip, ceramic coat a nice silver or black finish. Then sell it for $400-$500.
That's what I would do. I have no use for one. I would just invest into it!
Just M Opinion


That is exactly what I did! I got the hand-bent and another early Yoshimura pipe for a gpz550 for $80.



I have zero use for the hand-bent exhaust so I will media blast and recoat it for resale to a good home. I “think” it is for the Z-1 as all the vintage Yoshimura literature only lists the hand bent exhausts being available for the Z-1, cb750’s and assorted Suzuki’s.
I just couldn’t stand to see either sit in the junk yard. They need to be restored and used.

I am soaking the slip joint joints on both with an ATF/acetone/pb plaster mixture to see if I can get the sections to separate. When/if I get them to separate, then they are off to get media blasted. I will then also need to make or find a replica baffle for the hand-bent pipe as it has a ghetto hand made one at the moment.
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