Hello Guest User,

Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.

To access these 'Registered Users Only' areas simply register and login.

Z1B Restoration

Work in Progress

Moderators: chrisu, paul doran, Taffus, KeithZ1R

Message
Author
Wrigers
100Club
100Club
Posts: 368
Joined: 21st Apr 2017
Location: Oldham

Z1B Restoration

#1 PostAuthor: Wrigers » Sat Jun 09, 2018 7:32 pm

Got another project a few weeks back, a Z1b that was a none runner. Its in pretty good nick really, original dated wheels, switches, swinging arm etc.
The tank is super clean to say its been stood. I bought it really for when the crappy weather comes, but i got a bit carried away with myself the other day, you know how it is, one bolt leads to another and so on.
The engine is in fine fettle. No broken studs or fins that i can see. Anyway this were i am at the moment.
Attachments
20180606_205357.jpg
20180530_145754.jpg
20180605_203454.jpg
20180512_105759.jpg
20180512_105819.jpg

User avatar
PAULJAC47
Hardcore
Hardcore
Posts: 3257
Joined: 31st Aug 2008
Location: WOLVO WEST MIDS ENGLAND

Re: Z1B Restoration

#2 PostAuthor: PAULJAC47 » Sat Jun 09, 2018 7:40 pm

Great basis!
PAULJAC47,,,,,"She may not look like much, but she's got it where it counts, kid."
-Han Solo

You can't polish a turd, but you can roll it in glitter

Salad is what real food eats.
Anon

PUM 673

chrisw1
100Club
100Club
Posts: 394
Joined: 13th Mar 2017
Location: Oswaldtwistle

Re: Z1B Restoration

#3 PostAuthor: chrisw1 » Sat Jun 09, 2018 7:56 pm

getting harder to find like that ......looking forward to the thread

ZedHead
Hardcore
Hardcore
Posts: 2727
Joined: 9th May 2009
Location: Darlington
Contact:

Re: Z1B Restoration

#4 PostAuthor: ZedHead » Tue Jun 12, 2018 6:03 am

Good luck with the project :up :pop

Wrigers
100Club
100Club
Posts: 368
Joined: 21st Apr 2017
Location: Oldham

Re: Z1B Restoration

#5 PostAuthor: Wrigers » Sun Jun 17, 2018 7:42 pm

Started to strip the engine down this weekend, no major issues, no awkward bolts etc.
The gears look fine, but when the crank was removed i noticed some damage around one of the locating pins.
I had the same on my A4 engine although not quit as bad. It was exactly the same pin, the one directly inline with clutch drive gear.
I'm guessing that this is the one with the most stress on it with the engine under load??. In time its enlarged the hole and the pin just fell out.
Attachments
20180617_142218.jpg
20180615_171001.jpg
20180615_170950.jpg
20180615_170751.jpg

Philippe
Hardcore
Hardcore
Posts: 1994
Joined: 26th Oct 2017
Location: België

Re: Z1B Restoration

#6 PostAuthor: Philippe » Mon Jun 18, 2018 3:37 am

Hi Wrigers
bad news, very bad news...but it can be solved.
The cracks can be welded but it will have to be done by a real craftsman who has the correct equipment and a lot of skills. I've been reading about it on the German forum where the same thing happened and it could be repaired.
They wrote that the cracks where enlarged with a dremel tool, laser welded and that afterwards the welds were cleaned. Afterwards the cranckcase was machined on a lathe and a new location pin installed.
I hope you can find the correct people to repair the damage. A few years ago the costs were about 350 Euro...
Good luck, I hope you can solve it.
Philippe
the differences between a little boy and an adult man is the price and size of their toys!

Wrigers
100Club
100Club
Posts: 368
Joined: 21st Apr 2017
Location: Oldham

Re: Z1B Restoration

#7 PostAuthor: Wrigers » Mon Jun 18, 2018 4:52 pm

Thanks Philippe, im in no rush, holiday next then I'll do some enquiries and take it from there.
Still not sure why it only happenes on that pin though.

Philippe
Hardcore
Hardcore
Posts: 1994
Joined: 26th Oct 2017
Location: België

Re: Z1B Restoration

#8 PostAuthor: Philippe » Tue Jun 19, 2018 3:06 am

Hi Wrigers
it's one of the few weak points of the "bulletproof" engine...
The problem seems to be that only that pin limits, prevents, the movement from left to right of the cranckshaft. The problem starts with the pin becoming loose. When the pin isn't corrected and tightened the pressure on the cranckcase becomes higher and ultimately the aluminum starts to crack...
I have my information from the German forum, so don't crucify me if someone else knows another (better) reason...
GrtZ
Philippe
the differences between a little boy and an adult man is the price and size of their toys!

needaz1100r
ZedHead
ZedHead
Posts: 1128
Joined: 11th Sep 2012
Location: Reading
Contact:

Re: Z1B Restoration

#9 PostAuthor: needaz1100r » Tue Jun 19, 2018 10:29 am

I'd be grinding the case out where the cracks are until all the aluminium is gone well below where the cracks are.

Then a good welder can build it back up, without trying to get into cracks or crevises, or welding with trapped oil (oh how welders moan about trapped oil!!!) and you know any pre-stressed material is removed.

I'm sure Phillipe meant similar, but trying to actually weld the cracks would be chasing your tail I think.

Then, your machinist is working in brand new aluminium.

I know people who can do this if you are stuck.
Cheers,

Mark.

Wrigers
100Club
100Club
Posts: 368
Joined: 21st Apr 2017
Location: Oldham

Re: Z1B Restoration

#10 PostAuthor: Wrigers » Tue Jun 19, 2018 1:23 pm

Thanks Mark.
I'm on my jollies next week, so I'll pick up were I left off when I come back. I might pm you then. Paul

needaz1100r
ZedHead
ZedHead
Posts: 1128
Joined: 11th Sep 2012
Location: Reading
Contact:

Re: Z1B Restoration

#11 PostAuthor: needaz1100r » Wed Jun 20, 2018 7:09 pm

Wrigers wrote:Thanks Mark.
I'm on my jollies next week, so I'll pick up were I left off when I come back. I might pm you then. Paul


You're welcome, it would be an interesting little project.

Enjoy your hols.
Cheers,



Mark.

User avatar
8 Valve Mark
Custard Cream
Custard Cream
Posts: 966
Joined: 3rd Nov 2016
Location: Glasgow, tropical west Scotland

Re: Z1B Restoration

#12 PostAuthor: 8 Valve Mark » Wed Jun 20, 2018 10:52 pm

I'd recommend a call to dave at buzzworkz(07930-847648)to repair and probably explain the root of the problem too..club member too so you might get a good deal too. fingers crossed... mark

Wrigers
100Club
100Club
Posts: 368
Joined: 21st Apr 2017
Location: Oldham

Re: Z1B Restoration

#13 PostAuthor: Wrigers » Thu Jun 21, 2018 6:01 pm

Yes Buzzard my head build on the A4. Did a sterling job and a nice fella.

Wrigers
100Club
100Club
Posts: 368
Joined: 21st Apr 2017
Location: Oldham

Re: Z1B Restoration

#14 PostAuthor: Wrigers » Sun Mar 10, 2019 3:18 pm

Just thought I'd post a few pic's of the Z1b project i have had ongoing since last year.
It's coming together slowly but surely, I've tried to keep in as original as possible, re chromed a lot of the stuff, refurbed the switches and clocks etc.
Paintwork just back and a sterling job it is,no decals used it was all hand painted to the original colour.
Bit of fun, but spot the deliberate mistake with the bottom cranckcase, just noticed it prior to putting the two halves together. Bit of a senior moment there....
Thanks to Tony at Pit Stop bikes for welding the fork leg.
Attachments
20181103_120432.jpg
DSC02206.JPG
DSC02213.JPG
20180615_111731.jpg
20190102_145245.jpg
20190104_153218.jpg
20190218_113804.jpg
20190218_130559.jpg
20190226_152523.jpg

DavidZ1R
Hardcore
Hardcore
Posts: 1475
Joined: 12th Jun 2011
Location: Bolton Lancs

Re: Z1B Restoration

#15 PostAuthor: DavidZ1R » Sun Mar 10, 2019 7:20 pm

Nice work, good man Tony, he's doing a repair for me at the moment, he did a crack repair on a locating pin point on my z1000a1, did a belting job, who polished the engine , Steve Smethurst?
CB125 GT380 CB750F1 Z1R GPZ 750 Turbo Z1R


Return to “Projects”

Who is online

Users browsing this forum: No registered users and 36 guests