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1978 KZ1000-A2 "Barn find" 06 Jun 2020 09:25 #827441

  • BCScott
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Yet another update.

I was thinking my next step would be to rebuild the rear caliper, but seeing as the rear wheel needs to come off for that, I may just wait until I’m ready for new tires. Currently leaning towards Kenda Retroactives, but not certain. I’m open to recommendations.


After my rebuild, I started with Kendas, but after they wore out, I have switched to Avon AM26 Roadriders, which I now prefer. Revco.ca (out of Quebec) has them. The 4.00-18 rear is in stock (CDN$131.72) but the 3.25-19 is not, so I'm using 100/90/19 (CDN$117.40), which is the same size as the Kenda that it replaces. Shipping is free in Canada and they don't charge PST, only GST, so both tires delivered are CDN$261.58. Mine came within a week of ordering. revco.ca/avon-roadrider-tire.html
Fortnine.ca might have them, too, but they didn't have the front when I was looking. Fortnine is also free shipping, no PST and they give an additional $10 off when you buy a pair.
Back in the saddle and loving it! KZ1000A1

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1978 KZ1000-A2 "Barn find" 06 Jun 2020 10:47 #827446

  • Kaylinator
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Hopefully this isn’t coming to late but before you assemble the rear MC you need to run a 5/8 ball hone in the bore to break the glaze and give the seals a way to seat. I’ve had good luck with a 320 grit.


I haven't put fluid back in yet. Pretty easy to take it back apart and do that. Thanks for the tip.

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1978 KZ1000-A2 "Barn find" 06 Jun 2020 12:12 #827451

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Sorry this is piecemeal but if you need a lubricant to install the piston you can’t use standard grease. You can try using brake fluid or Red Rubber Grease.
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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1978 KZ1000-A2 "Barn find" 06 Jun 2020 12:30 #827455

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Is it normal/expected that the rear brake pedal would not spring back until after there is fluid in the system?

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1978 KZ1000-A2 "Barn find" 06 Jun 2020 13:55 #827469

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Piston could be dry. But the pedal should return. While you there pull the brake pedal and grease the shaft of the pedal.
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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1978 KZ1000-A2 "Barn find" 06 Jun 2020 17:37 #827491

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Be cautions with the hone. I was a bit too enthusiastic with a hone on a master cylinder one time and ruined it, LOL.
Current project 76 KZ900 (This was a Vetter model)
76 KZ900
81 XJ550H SECA (Current Project)
82 XJ550R SECA
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86 FJ1200
74 Z1900
72 CB450
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1978 KZ1000-A2 "Barn find" 06 Jun 2020 19:07 #827502

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Be cautions with the hone. I was a bit too enthusiastic with a hone on a master cylinder one time and ruined it, LOL.



Good tip. Only run the hone in there a few times and on slow speed. Use fresh brake fluid on the ball hone. Your only trying to get rid of the shinny surface inside the bore. Go slow and check it often.
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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1978 KZ1000-A2 "Barn find" 07 Jun 2020 05:54 #827512

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Piston could be dry. But the pedal should return. While you there pull the brake pedal and grease the shaft of the pedal.

Brake pedal pivots are notorious for seizing because some owners never lubed them as directed in the owner's manual. Water gets into the pivot & rust seizes the brake pedal to the pivot. All it takes is a drop or two of oil once a year & all's good.

A seized pedal can be a bear to remove. Penetrating oil on the pivot, patience and much rocking & pulling will eventually get it off. Also check that the large, wound brake pedal pivot return spring isn't broken.

Good Ridin'
slmjim & Z1BEBE

Good Ridin'
slmjim & Z1BEBE
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1978 KZ1000-A2 "Barn find" 07 Jun 2020 08:43 #827519

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Something else came to mind. Since you're in Alberta, The Old Motorcycle Shop in Calgary is a good resource for used parts. Phil is a good guy. He tends to have a fair bit of stuff for our bikes and is reasonably priced. I bought a full stock exhaust system from him last year (6/10, but cleaned up to 8/10 with an hour or so of elbow grease) for $250 in the shop. His website is www.oldmotorcycleshop.com/ and he has an ebay store www.ebay.ca/str/oldmotorcycleshop . You can save shipping and have a look at what you're buying if you're close enough to drop in.
Back in the saddle and loving it! KZ1000A1
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1978 KZ1000-A2 "Barn find" 07 Jun 2020 12:50 #827533

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Last time I checked The Old Motorcycle Shop they had a '69 Sandcast Honda 750 for sale. It looked Purrfect!
I have a couple of Z1B's restored, an '80 KZ1000LTD restored, a 1981 KZ550 restored and a 2008 KLR 650 for off road fun. My wife has a 2019 Suzuki DR 650 for on and off road.

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1978 KZ1000-A2 "Barn find" 07 Jun 2020 13:16 #827534

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Last time I checked The Old Motorcycle Shop they had a '69 Sandcast Honda 750 for sale. It looked Purrfect!


CDN $45,000 though! Next time I'm in Calgary, I might try to swing by and see it. The pictures look fantastic. www.oldmotorcycleshop.com/advert/1969-honda-cb750-sandcast/
I was going to mention it, but didn't know if that would be a sacrilege here :)
Back in the saddle and loving it! KZ1000A1

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1978 KZ1000-A2 "Barn find" 07 Jun 2020 18:15 #827552

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So yesterday, my brother who has more balls than brains rode the bike up and down the road without brakes. It ran great.

Got the rear brake bled and working great. Took apart the front MC today only to discover I need a rebuild kit for that one too. Both the primary and secondary cups are done.

My buddy leaves on a bike trip tomorrow for a week. When he gets back the forks will come off to polish the lowers and replace the fork seals and dust caps.

What should I use for fluid in the forks? Service manual calls for SAE 10W-20, but I'm leaning more towards Bel-Ray fork oil. In that case, I'm not sure what weight I should go for. Keep in mind I've been 140lbs since I was sixteen.

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