KZR's Bikes of the Month for 2024

1979 UK Spec Z400B2

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18 Jun 2019 08:27 #806003 by Pookie
1979 UK Spec Z400B2 was created by Pookie
Found this cowering in the corner of my garage, so thought it was time to get it going after 21 years. I'm thinking of restyling it, maybe a flat tracker? I know some folk will see how original it looks and say keep it standard but I fancy "something different"
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18 Jun 2019 08:40 #806004 by 650ed
Replied by 650ed on topic 1979 UK Spec Z400B2
It looks like someone already made quite a few changes to it (paint, exhaust, forks, turn signals, shocks, etc.) so it's not really original any more. Given that, I would restyle it into something I liked better. Step 1 might be to make sure the engine runs ok. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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18 Jun 2019 09:33 #806005 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
I'm working on step 1, The inlet rubbers and diaphragms were toast so have new ones, I will try and get it running tonight.

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18 Jun 2019 12:54 #806017 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
Well I got running, so that's a start!
Only had to charge the battery, fit new inlet rubbers, carb diaphragms, spark plugs and fresh fuel. Started straight away.

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18 Jun 2019 16:11 #806043 by Nerdy
Replied by Nerdy on topic 1979 UK Spec Z400B2

650ed wrote: It looks like someone already made quite a few changes to it (paint, exhaust, forks, turn signals, shocks, etc.) so it's not really original any more.



To me those look like stock forks with aftermarket rubber gaiters fitted.

And the purple ground wire under the seat is definitely not original. :)

1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R
The following user(s) said Thank You: 650ed

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24 Jun 2019 04:04 #806340 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
I've just dropped the wheel off to be rebuilt with stainless steel spokes, vapour-blasted hubs and rims power-coated in black. Should get them back in about three weeks.

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  • gd4now
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  • Denco where did you go?
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24 Jun 2019 21:45 #806379 by gd4now
Replied by gd4now on topic 1979 UK Spec Z400B2
I am not familiar enough with the 400/440 to tell if has many changes from stock. But it certainly appears to my eyes to be a great starting point for a project/build. I will be following from afar so to speak.

1977 KZ650 B1
Pods and Denco header


OLD KAW OWNERS SMILE ALOT

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27 Jun 2019 01:45 - 27 Jun 2019 01:46 #806544 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
New bars arrived today, think they will be fine.
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Last edit: 27 Jun 2019 01:46 by Pookie.

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28 Jun 2019 02:29 - 28 Jun 2019 02:30 #806608 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
I want to do away with the air-box and battery mount, so looked for the smallest battery I could find. As the bike has a kick-start thought I don't need the battery to be able to turn the engine over, so I bought the smallest lithium-iron that Shorai do. It is tiny and weighs nothing!
I installed it on the bike and started it using the kick-starter to check it charged okay using a volt meter, all was good, then I tried the starter motor thinking the tiny battery would struggle to turn the engine over but cranked it over faster than the lead-acid battery did! [attachment=125796]
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Last edit: 28 Jun 2019 02:30 by Pookie.

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16 Jul 2019 02:31 #807588 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
Still waiting on the wheels so I thought I would do a few little jobs on the bike. Wanted to make the switches look more "retro" so took them apart, cleaned the contacts, polished the housings and fitted braid instead of the plain black sleeve.
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22 Jul 2019 01:02 #807963 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
I removed the forks yesterday to paint them satin black, I noticed the rubbers for the handlebar mounts were perished and cracked. As I did not know if I could get new ones I decided to print them one my 3D printer using a flexible filament, a quick bit of work on the PC had them designed and a hour or so on the printer and ready to fit.
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The following user(s) said Thank You: diggerdanh, linuxrob

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09 Aug 2019 23:51 #808976 by Pookie
Replied by Pookie on topic 1979 UK Spec Z400B2
I have got the wheels back after having them refurbished, I think they look great.
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