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1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

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chrisNI
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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#16 PostAuthor: chrisNI » Fri Dec 21, 2018 8:49 am

It’s nice to see one being cleaned up with some of the patina preserved.

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#17 PostAuthor: pignog » Fri Dec 21, 2018 9:22 am

I'm also doing a 1973 2 owner Z1, last owner being Rick Brett. It's a "Preservation" not a restoration.
I'll put some photos when I get it back together.
One thing that's struck me, is that after 45years you can see the thought that went into the design of the bike.

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#18 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 10:18 am

pignog wrote:I'm also doing a 1973 2 owner Z1, last owner being Rick Brett. It's a "Preservation" not a restoration.
I'll put some photos when I get it back together.
One thing that's struck me, is that after 45years you can see the thought that went into the design of the bike.


Would be great to compare notes. I saw your thread - looks like a very similar proposition to mine.

Any chance you could post some pictures of the decals on the rear tail unit (the ones visible when you lift the seat). I think I’m missing a couple of mine. Thanks, James

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#19 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 10:19 am

chrisNI wrote:It’s nice to see one being cleaned up with some of the patina preserved.


Thanks Chris. Have to admit, it’s a fine line to tread but hopefully Incan do the bike justice without over-restoring it.

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#20 PostAuthor: pignog » Fri Dec 21, 2018 11:01 am

Yes James, I will when I get chance, thanks, Happy Christmas, David

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#21 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 12:14 pm

pignog wrote:Yes James, I will when I get chance, thanks, Happy Christmas, David

Thanks David - Happy Christmas to you too..

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#22 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 3:16 pm

Spent some time cleaning the original exhausts. My go-to polish is now Quick-Glo (supplied by Nigel on the forum). It's superb stuff & leaves a nice wax sealant behind.

Hard surface rust was removed with a brass hand brush (light pressure applied with some WD40 as a lubricant). Given how rough they looked, I'm pleased with the results. I may well invest in a set of unstamped/no-clip pipes in the new year, but for now, these will do & fit the patina of the bike. Just a shame the lower RH pipe has some damage/rash. I imagine finding a correctly stamped, good condition replacement will be nigh-on impossible.

Before pics:

A03642CD-6A44-4D6B-BDD1-8722A3BD3184.jpeg
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F661C5B6-06AF-40D3-85E1-049E46D1D73D.jpeg
CF05C8FA-54E6-40F5-984F-E78AA5ED9AF0.jpeg



After pics:

339F9B2A-CA9A-45EC-9312-80F483FF35D5.jpeg
557F92A9-31B3-4BF7-A645-54998D1BFF4C.jpeg
54A3E6D0-FA09-4F61-AC07-4E9304EE28FC.jpeg
EB21A69F-0718-4E95-82F9-65A6053024A3.jpeg
762FD35A-B167-493F-8C92-B178C4CC2A2B.jpeg
01537676-A43D-427D-B941-D5612A03D2AE.jpeg

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#23 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 3:27 pm

Original electrical panel lightly cleaned & reinstalled:

038F3254-B542-4E4B-9FC5-05B5E30EA6FB.jpeg


Refurbished switch gear re-fitted (thanks to Brown Critchlowe for doing these for me). Managed to source a NOS Kawasaki LH rocker switch to replace the broken original:

Before refurb:

BCDF6DAF-C289-4CAF-8CD1-949609FB35FD.jpeg
37777A69-323B-4346-A87A-FA2E765216B7.jpeg
904A2D84-BA73-4C47-AA91-ED64564AC550.jpeg
C9E83F04-2223-4C9E-892A-8CF80FD78219.jpeg
DF5670F1-686B-4C09-8CE4-3B8C6A588946.jpeg
74CF2B94-19D0-48AC-9124-0331EDA48F5D.jpeg
16EDA76C-ECEA-40D6-8989-7D1E70083A1D.jpeg


After refurb:

2AED0194-F0CA-4F79-9222-1656D54F0735.jpeg
B175DC2B-D7D2-4035-8748-DA30B46CEA0E.jpeg

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#24 PostAuthor: Philippe » Fri Dec 21, 2018 3:34 pm

Hi James
great buy! Congratulations! Finding a '72 Z1 is, like finding the holy grail, allmost impossible to do but you succeeded!
She's in a great condition as far as I'm concerned. Try to get her as complete as possible and ride her. I think you'll have to replace the original air box because those have a tendency to shrink. The replicas are good, so don't bother, buy a new one.
I'm very curious to see her finished. Keep posting !
GrtZ
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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#25 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 3:37 pm

Alternator cover polished & new alternator harness guide grommet fitted - will probably add some black silicone as well to ensure an oil-tight seal:

FCE58F3D-EA63-498E-BE24-B18797832755.jpeg
E62C5686-740F-4551-AFA9-3D0B6C724592.jpeg
0ADEF5E2-6AE8-4137-8FF1-F6756687CC23.jpeg



Original chrome brake stay, brake lever, gearchange lever, starter motor cover polished:

53E39447-8129-41A2-BCAE-75421E0E6EF1.jpeg

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#26 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 3:46 pm

Quickly cleaned the date codes on the rims - seem plausible for a 10/72 date of manufacture for the bike.

Front rim: 2I 303 (September '72)
rear rim: 2G 303 (July '72)

EF36DE7E-1114-4E77-BA46-6F54B4B23F31.jpeg
DC80BF65-A828-45C4-B91B-13C6069C7964.jpeg
B444AFB6-F800-4A1B-BAE3-DBD1323E6380.jpeg

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#27 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 3:51 pm

Philippe wrote:Hi James
great buy! Congratulations! Finding a '72 Z1 is, like finding the holy grail, allmost impossible to do but you succeeded!
She's in a great condition as far as I'm concerned. Try to get her as complete as possible and ride her. I think you'll have to replace the original air box because those have a tendency to shrink. The replicas are good, so don't bother, buy a new one.
I'm very curious to see her finished. Keep posting !
GrtZ
Philippe


Thanks Philippe - good to hear from you again. I'll keep the info/photos flowing as/when I make more progress. Will slow down during the Christmas break & pickup again in the new year.

Note re airbox - mine seems nice and supple but won't really know until I try and fit the carbs. James.

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#28 PostAuthor: JamesH_Sussex » Fri Dec 21, 2018 3:52 pm

Early head with integrated vacuum take-off ports. The carb holders have obviously been replaced at some point as these have the later integrated vacuum ports as well.

Anyone ever modified these to look like the original early no-stub type? (not sure I can be bothered :blah ).

B3D31679-136F-4DE2-9720-84CB712F9512.jpeg

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#29 PostAuthor: baz » Fri Dec 21, 2018 4:48 pm

anybody know when they switched over to the 73 type head ?

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Re: 1972 Z1 Recommission / Rebuild - Vin # Z1F-01173

#30 PostAuthor: Ultim8pc » Fri Dec 21, 2018 10:11 pm

It's amazing what polishing up an old bike can do to make it look tons better. A great start I'd say.
http://www.airevalleyclassics.co.uk
10% discount code Z1OCTEN
Keyster rebuild kits & carburettor spares - airscrews, jets, needles, starter plungers & gaskets.
Also petrol/ethanol proof float bowl gaskets. IMD pistons preferred seller.


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