Master Cylinder I.D.??

  • 79MKII
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Master Cylinder I.D.??

20 Feb 2008 11:28
#195845
Can anyone offer an opinion on what year/model this master cylinder could be from? The only difference I can see from my '79KZ1000 MKII MC is that there is a "14" cast into the housing instead of the usual "5/8". Maybe a 650 or 750?? Any ideas?
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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  • The Gringo
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Re: Master Cylinder I.D.??

20 Feb 2008 11:56
#195850
This is one of those questions that makes me go hmmmmm? I looked at the rear master cylinder on my 650 C-1 and it doesn't look like the one you have. I know that my 81 750 LTD has a remote reservoir as does my L-3 so we can rule those two out. My 1000 G-1 is stamped 5/8 and has the remote reservoir so there is one more eliminated. I don't have a 1000 A or a 1000 B here to look at or a 750 B but it looks like maybe we narrowed it down to 3 possibles?
Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special

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Re: Master Cylinder I.D.??

20 Feb 2008 12:05
#195852
77-78 kz1000????????;)
Still recovering,some days are better than others.

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Re: Master Cylinder I.D.??

20 Feb 2008 12:26
#195865
I can also say for certain that the 1980 LTD has a remote reservoir. I'm also fairly certain that the 1980 "A" model has a remote reservoir. Knock off 2 more from the list...
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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Re: Master Cylinder I.D.??

20 Feb 2008 12:57
#195872
Looks like it might be a '78 650 SR. The parts diagram has a comment of "14" for markings. The piston is also a different part number than the MKII, so maybe that's it.
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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Re: Master Cylinder I.D.??

20 Feb 2008 13:51
#195885
Any chance of getting a pic of the other side?
Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special

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Re: Master Cylinder I.D.??

20 Feb 2008 15:25
#195896
The Gringo wrote:
Any chance of getting a pic of the other side?

Your wish is my command!

The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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  • steell
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Re: Master Cylinder I.D.??

20 Feb 2008 16:24
#195906
I think you can eliminate the KZ750B from your list, the ones I have (and had), have a bleeder screw on the rear master cylinder.
KD9JUR

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Re: Master Cylinder I.D.??

20 Feb 2008 17:16
#195916
14 MM is closer to 9/16 than 5/8 but perhaps that what 14 means.

Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300

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Re: Master Cylinder I.D.??

20 Feb 2008 17:23
#195919
After seeing that side I can say it's from a 650.
Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special

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Re: Master Cylinder I.D.??

20 Feb 2008 17:39
#195924
KZCSI wrote:
14 MM is closer to 9/16 than 5/8 but perhaps that what 14 means.

Bill

That's exactly what I'm hoping for - if it's a true 14mm it's almost 2 mm smaller than 5/8".

Post edited by: 79MKII, at: 2008/02/20 20:43
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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Re: Master Cylinder I.D.??

20 Feb 2008 17:41
#195925
The Gringo wrote:
After seeing that side I can say it's from a 650.

Any idea what year/model? I'd like to find a rebuild kit but I noticed that the 650's vary quite a bit depending on year/model.
The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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