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Calling all large tank Z1R owners 21 Jul 2021 16:26 #852221

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Hi All, I have a Z1R MKII large tank, Fuel/gas cap, the one that bolts directly into the tank top, there were 2 different caps for this tank, I desperately need the other type. The cap I have is in near perfect condition with new rubber seal section, Ideally I would like to swap it with the correct cap. This cap cost me a small fortune, I thought I may be able to modify it to use but its not possible, any help would be much appreciated..

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Calling all large tank Z1R owners 21 Jul 2021 16:33 #852224

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Can you post a picture of your tank?  I didn't know there were two caps.
'78 Z1-R in blue, '78 Z1-R in black, '78 Z1-R in pieces
'95 GPZ1100 (sold) , '00 ZRX1100

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Calling all large tank Z1R owners 21 Jul 2021 16:43 #852225

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Is it like the cap on this German Z1000S Z1R?

bringatrailer.com/listing/1978-kawasaki-z1r-z1000s/
'78 Z1-R in blue, '78 Z1-R in black, '78 Z1-R in pieces
'95 GPZ1100 (sold) , '00 ZRX1100

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Calling all large tank Z1R owners 21 Jul 2021 17:58 #852229

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Can you post a picture of your tank?  I didn't know there were two caps.

I forgot my camera yesterday, Can't get photo's till next week now. On my tank, at the back of the fuel inlet the the threaded inserts to locate the cap are directly in the top of the tank, the other tank has a small raised bracket spot welded onto the tank and the cap hinge screws into that, that's the one i need. I'll do a google search and see if I can find some pics....
OK, the top  one is the cap I need  , its hinge section is longer and screws directly into the tank , the bottom one is the one I have ,  hinge is shorter and the seal sits a couple of mill above the filler hole so it doesn't seal at all.... I was going to just make a small shim and use the cap but because of the seal it still won't work like that... I don't think I can buy the seals, I must have a look...

 
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Calling all large tank Z1R owners 21 Jul 2021 19:57 #852249

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That's interesting (and frustrating for you).  The US Kawasaki diagrams for the 1980 D3 only list one part number for the gas cap.

The two big Z1R tanks I've seen both have the cap bolt directly to the tank, and do not have that sheet metal bracket around the fill hole.  It sounds like this is the tank you have as well.  Unfortunately I don't have a cap for you.

But I'm curious about the other style of tank.  Your profile says you're in Australia.  Is it possible that the tank with the sheet metal bracket is from a 1979 D2?  I think Australia was one of the places to get a few of the handful of D2 models.  I also checked Tony Sculpher Z1R book, and there is no mention of two different caps for the big tank.  

 
'78 Z1-R in blue, '78 Z1-R in black, '78 Z1-R in pieces
'95 GPZ1100 (sold) , '00 ZRX1100

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Calling all large tank Z1R owners 21 Jul 2021 20:38 #852252

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That's interesting (and frustrating for you).  The US Kawasaki diagrams for the 1980 D3 only list one part number for the gas cap.

The two big Z1R tanks I've seen both have the cap bolt directly to the tank, and do not have that sheet metal bracket around the fill hole.  It sounds like this is the tank you have as well.  Unfortunately I don't have a cap for you.

But I'm curious about the other style of tank.  Your profile says you're in Australia.  Is it possible that the tank with the sheet metal bracket is from a 1979 D2?  I think Australia was one of the places to get a few of the handful of D2 models.  I also checked Tony Sculpher Z1R book, and there is no mention of two different caps for the big tank.  



 

I'm after the cap that bolts directly to the tank like you had, the other style tank was apparently phased out sometime during the D2 as far as I can ascertain , they seem to be very rare and I happen to have bought a cap to suit, so I expect I will be able to get rid of the D2 cap,  but I'd rather swap it if possible. As a side note, while searching for a cap today I found a finished Auction for a D3 cap for 450 UK pounds...!!!!, That's about 900 Aussie dollars, unbelievable..
If you come across anything please let me know....

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Calling all large tank Z1R owners 21 Jul 2021 21:16 #852255

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I sold a D3 tank with cap for not much more than that 2 years ago.  I guess I should have sold the cap separately.  :)
'78 Z1-R in blue, '78 Z1-R in black, '78 Z1-R in pieces
'95 GPZ1100 (sold) , '00 ZRX1100

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Calling all large tank Z1R owners 21 Jul 2021 21:39 #852258

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That cap in the link is the same as mine.   From what I can work out, the main difference is the filler hole is much higher in the D2 tank, so the lock section sits about 12mm above the underside of the cap, on the correct cap, the lock section sits about 2 mm above..

This is a look at the correct cap {D3} upside down, you can see the lock section barely sits above the under edge..   A pic of Mine below that
 
 
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