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Z650 fuel linkage O rings

Posted: Thu Jan 21, 2021 9:00 pm
Author: mattc
I am looking to put new O rings on the three metal fuel linkage pipes that fit between the carbs on a Z650B1, one T piece and 2 straight pieces.
(92005-1010 & 92005-1009)

They seem to be the same sizes so need 12 O rings in total. Anyone know what sizes O rings I need or where I can get them from? You can buy the complete parts from Z-Power and CMS but they are pretty expensive.

Thanks for any help
Matt

Re: Z650 fuel linkage O rings

Posted: Thu Jan 21, 2021 9:44 pm
Author: KeithZ1R
7.5 id x 1.8 cross section give or take have a troll around 'O' ring suppliers you should find something close to that, the ports are around 11mm id from memory. If I am incorrect somebody will be along to let you know :)

Re: Z650 fuel linkage O rings

Posted: Thu Jan 21, 2021 10:05 pm
Author: z1bman
if you still have the original joints fitted the part that looks like an o ring is part of the fitting & cannot be removed. you will have to purchase the stainless steel kit that you can buy from z power & has separate o rings fitted

Re: Z650 fuel linkage O rings

Posted: Thu Jan 21, 2021 10:13 pm
Author: warren3200gt
650 B1's do have removable o rings from new. Later models had o rings moulded into the t and straight piece.
Halfrauds do a viton multi o ring set which has the correct size in it. Cant recall how many in the set so you may need two.
Cheap enough and you get some spares and a stock of other sizes to boot.

Re: Z650 fuel linkage O rings

Posted: Thu Jan 21, 2021 10:30 pm
Author: z1bman

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 8:42 am
Author: mattc
KeithZ1R wrote:7.5 id x 1.8 cross section give or take have a troll around 'O' ring suppliers you should find something close to that, the ports are around 11mm id from memory. If I am incorrect somebody will be along to let you know :)

Thanks for the detail Keith...looks about right. Matt

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 8:44 am
Author: mattc
z1bman wrote:if you still have the original joints fitted the part that looks like an o ring is part of the fitting & cannot be removed. you will have to purchase the stainless steel kit that you can buy from z power & has separate o rings fitted

No these O rings definitely come off, and the metal parts do look like they are original 43 years old...the sizes that Keith suggested look about right. Thanks, Matt

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 8:44 am
Author: mattc
warren3200gt wrote:650 B1's do have removable o rings from new. Later models had o rings moulded into the t and straight piece.
Halfrauds do a viton multi o ring set which has the correct size in it. Cant recall how many in the set so you may need two.
Cheap enough and you get some spares and a stock of other sizes to boot.

Good suggestion Warren, thanks Matt

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 8:56 am
Author: KeithZ1R
mattc wrote:
KeithZ1R wrote:7.5 id x 1.8 cross section give or take have a troll around 'O' ring suppliers you should find something close to that, the ports are around 11mm id from memory. If I am incorrect somebody will be along to let you know :)

Thanks for the detail Keith...looks about right. Matt


Just had another measure whilst not under the influence :oops: they are 8mm id and 1.8 cross section :up

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 9:03 am
Author: mattc
KeithZ1R wrote:
mattc wrote:
KeithZ1R wrote:7.5 id x 1.8 cross section give or take have a troll around 'O' ring suppliers you should find something close to that, the ports are around 11mm id from memory. If I am incorrect somebody will be along to let you know :)

Thanks for the detail Keith...looks about right. Matt


Just had another measure whilst not under the influence :oops: they are 8mm id and 1.8 cross section :up


Thanks, I have just checked the od of the grooves in the metal linkage pieces and they are 8.2mm.....so an O ring id of 8mm or slightly less should be good. Cheers

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 9:10 am
Author: warren3200gt
8 X 2 is the size you want Matt. Nice tight squish fit. They are in the Halfrauds pack.

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 9:52 am
Author: mattc
warren3200gt wrote:8 X 2 is the size you want Matt. Nice tight squish fit. They are in the Halfrauds pack.


Thanks Warren. Squishy fit it will probaby be.... Matt

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 12:02 pm
Author: z1bman
kawasaki never made them with a seperate o ring fitted it was moulded to have the same effect as an o ring someone has probably fitted suzuki gs750b fittings that have seperate o rings & are available to buy seperate & are the same size as the kawasaki

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 12:13 pm
Author: warren3200gt
Yes they did z1bman. Both my 650's have them fitted. One of which I have owned from new. Both are 650 b1's as is Matt's.

Re: Z650 fuel linkage O rings

Posted: Fri Jan 22, 2021 12:25 pm
Author: z1bman
i worked at cradley for over thirty years as a mechanic & have stripped many of these carbs & have never seen them with removable o rings if they had removable o rings they would be shown in the parts diagrams or parts microfiche. contact dave marsden at z power if you want more confirmation

gs 750b