Welcome, Guest
Username: Password: Remember me

TOPIC:

GPZ750R1 -82 Will it be yet an other green Kwack 15 Nov 2015 08:26 #698757

  • GPzMOD750
  • GPzMOD750's Avatar
  • Offline
  • User
  • Posts: 1365
  • Thank you received: 148
Nice to see you getting started. Are you going to keep the fairing?

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 15 Nov 2015 08:44 #698760

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
Tks James.
Yep! finally we are on our way and I really want to keep the original graphic language of the GPz so the fairing is definitely a keeper :cheer:
/A
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 16 Nov 2015 03:04 #698896

  • GPzMOD750
  • GPzMOD750's Avatar
  • Offline
  • User
  • Posts: 1365
  • Thank you received: 148
Well that's Ironic. It seems I'm the only one that has a 750R1 and doing mods that isn't replacing the forks and swing arm but isn't using the fairing, Not that I had the choice.

Found these on ebay BTW, might come in handy. I'm really tired of fighting the old hard ones, takes all the fun out of playing with the carbs. With the drop in the Euro they were cheaper than Z1 Ent and Partszilla.

Vergaser Luftfilter-Gummi Set f. Kawasaki Z 750 Z 650 N 700 14073-1032

That is if you're keeping the airbox.
The following user(s) said Thank You: 750Kruzer

Please Log in or Create an account to join the conversation.

Last edit: by GPzMOD750.

GPZ750R1 -82 Will it be yet an other green Kwack 06 Dec 2015 08:09 #702120

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
I could never imagine that the sized swing bolt was going put up such a fight, we tried every trick up our sleeve to get it loose.



Unfortunately the garage is a wooden structure so we could not play around with hydraulic jacks to press it out, so in the end I went out and bought a second hand used oxy-weld kit to heat the little F#&@er out.



But the swingbolt continued to elude us to big time and finally it had to pay the final price as the oxy-weld kit contained a cutting torch.



This means that we didn’t get a chance to measure up the swing arm before we start fabricating the new distances and bushings we will need when fitting the Zephyr swing arm to the bike.
Tks. to this excellent forum we already know that the pivot is 230mm



In short, we have a used Gpz750R1 swing arm for sale that some think can be brought back to life with a little JB-weld.
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91
Attachments:

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 06 Dec 2015 16:09 #702209

  • GPzMOD750
  • GPzMOD750's Avatar
  • Offline
  • User
  • Posts: 1365
  • Thank you received: 148

scubaanders wrote: ....
In short, we have a used Gpz750R1 swing arm for sale that some think can be brought back to life with a little JB-weld.

Nah! Just some 3 minute epoxy and you're golden.

You forgot to use some whiskey. Would have come right out. Or was that bottle of scotch the last one you had.

Please Log in or Create an account to join the conversation.

Last edit: by GPzMOD750.

GPZ750R1 -82 Will it be yet an other green Kwack 07 Dec 2015 07:44 #702279

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
Ohhh no James.

Scotch is only used for barter. :woohoo:

But we were considering dipping the hole frame in Seagram's Seven Crown and Coke (Popular add in Cycle and Cycle World back in the eighties). Coke for the phosphoric acid and together with Seagram's it tastes just as bad as the Acetone and transmission fluid cocktail. :pinch:

/A
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 20 Feb 2016 03:51 #711579

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
I have my bike up in my buddy Erik’s garage (50km away) so there is a lot of things that need to work in order to get work done on the bike, and to make things worse Erik gave his daughter a Hoverboard for X-mas. Guess you can figure out the rest. . :blink: . . . yes there were some serious surgery :S needed to get him back in good working order again and the days we had set of around new years were lost.

Anyhow, we are back at it.

First up, fitting the Zephyr 750 swing arm.



The Gpz750R1 measures 230mm between the studs and the Zephyr 750 swing arm is 234mm, so while I shaved of 2mm on each side Erik milled the Zephyr pivot tube down to 230mm.



Secondly we had to deal with the fact that the swing bolt is 16mm and the id of the Zephyr pivot tube is 20mm. Our fix was to fit a piece of high precision steel tube that by chance had just that od/id inside the pivot tube.



And everything went on the bike like a charm.



In order to secure that the end seals stay in the swingarm, Erik made two spacers of delrin that fits over the studs in the frame and will stop the seals from getting out of the swingarm. (not in the picture)



Next up is fitting the wheels, which means changing the wheel bearings from 20mm id to 17mm to fit the Zephyr wheel axels and centering them in the frame.

Unfortunately we ran in to a little bit of a snag with the front wheel as it turned out that the donor bike, a ZXR400 has 210mm fork spacing and the Zephyr fork only 200mm which put the wheel ca 10mm of to the right. Bummer. :pinch:

/A
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 20 Feb 2016 05:44 #711590

  • GPzMOD750
  • GPzMOD750's Avatar
  • Offline
  • User
  • Posts: 1365
  • Thank you received: 148
Nice to see you back at it.

I don't see anything that you can't tackle with the addition of a few more beers. If that doesn't work get a bigger hammer and switch to whiskey.

Please Log in or Create an account to join the conversation.

Last edit: by GPzMOD750.

GPZ750R1 -82 Will it be yet an other green Kwack 21 Feb 2016 01:26 #711750

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
James according this diagram I found on the net, that is based on an independent studies done by GAOCBB Beer outperforms Whiskey at all times by its ability enhance the output of Elbow grease measured in part pers million, per kilo pound meter per second.



I believe this information is probably withheld from the general public by the authorities due to the lobbying by WAOFH.

Therefor we shy away from whiskey in the garage, unless it’s the Coke and Seagram’s Seven Crowns cocktail we use as a rust solvent.

/A
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91
Attachments:

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 21 Feb 2016 02:00 #711751

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
Next up was swapping the bearing in the rear wheel in order to accommodate the Zephyr’s 17mm wheel axle.



This means that we also had to make a new 17mm id collar to go inside the wheel.



The by the use of suitable Scandinavian whether we shrunk the bearings and the assembly was done without the use of brute force.






All the spacers needed were fabricated with 17mm id, in 6061 with the original as templates and then finally Erik mild out a holder for the cush drive so that we can mill the hub in order to line up the chain.



At this point we don’t know if an original front sprocket from a ZX750A1 that has an offset approx. 5mm will be sufficient or if we have to go the full mile and get our hands on a 3/8 25mm 13 spline GS1000 front sprocket.

We decided that we will not go any further with the ZXR400 front wheel that turned out to wide over the hub. :dry: I got my hands on a ZR-7 front wheel in Italy that hopefully will be a strait swap and that will allow us to keep the speedo gear. The wheel was cheap and it will be too much hassle to mill down the wheel as we don’t have access to a lathe large enough to accommodate a 17’ wheel.

/A
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91

Please Log in or Create an account to join the conversation.

Last edit: by scubaanders.

GPZ750R1 -82 Will it be yet an other green Kwack 21 Feb 2016 10:15 #711803

  • GPzMOD750
  • GPzMOD750's Avatar
  • Offline
  • User
  • Posts: 1365
  • Thank you received: 148

scubaanders wrote: James according this diagram I found on the net, that is based on an independent studies done by GAOCBB Beer outperforms Whiskey at all times by its ability enhance the output of Elbow grease measured in part pers million, per kilo pound meter per second.



I believe this information is probably withheld from the general public by the authorities due to the lobbying by WAOFH.

Therefor we shy away from whiskey in the garage, unless it’s the Coke and Seagram’s Seven Crowns cocktail we use as a rust solvent.

/A

But here in 'Merica being hard working non-conformists we usually break down the barriers of scientific gobledy-gook. Just as a bigger hammer is often contrary to conventional wisdom it is often just what's needed. We long ago shed the yoke of the foreigner's, funny talking, metric usin', tyrannical ways.

Seriously, it looks like you are having too much fun. B)

Please Log in or Create an account to join the conversation.

GPZ750R1 -82 Will it be yet an other green Kwack 06 Mar 2016 06:59 #714094

  • scubaanders
  • scubaanders's Avatar Topic Author
  • Offline
  • Sustaining Member
  • Posts: 539
  • Thank you received: 233
So the ZR-7 wheel showed up from Napels and its funny it looks the same as the ZXR400 wheel and you really have to look at bearing fittings to tell them apart.

The ZXR400 wheel didn’t want to center up with speedo drive in place, it ended up 10mm to the right.



Quick swap to the ZR-7 wheel it lines up beautifully.



Just need to fabricate a wheel axle spacer that is 25 mm as stated on the parts fish.



Then when we were looking at the original front fork we noticed that the brake joint with the lower fairing mount might just fit.



It did, as well as the instrument cluster and the ignition lock. Nice now we can focus our attention on lining up the chain, Now I need a 3/8 offset sprocket preferably 15-16 tooth and I would love a 520 but I guess I have to settle with a 530. It's a jungle out there and the size of the front sprocket Is limited by the clutch push rod so we will see what I can get my hands on.

/A
Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91
Attachments:

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum