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Z1a Restoration

Work in Progress

Moderators: KeithZ1R, chrisu, paul doran, Taffus

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BigZCas
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Re: Z1a Restoration

#31 PostAuthor: BigZCas » Mon Dec 25, 2017 12:48 pm

Last Update this year I guess :lol:
Why is it so satisfying when you get to try the tank on for the first time :D

Engine coming along nice at Buzzworkz (Z1 Club Buzzard)
Attachments
IMG_2081 (2).JPG
IMG_2076.JPG
IMG_2075.JPG
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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BigZCas
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Re: Z1a Restoration

#32 PostAuthor: BigZCas » Mon Jan 22, 2018 9:28 am

Some nice reference pictures :)
All the inevitable broken studs milled out and Helicoils fitted.
Clutch plates :(
Attachments
Z1 - Engine Overall 12.JPG
Z1 - Engine Overall 12.JPG (154.69 KiB) Viewed 1069 times
Z1 - Engine Overall 13.JPG
Z1 - Engine Overall 13.JPG (92.13 KiB) Viewed 1069 times
Z1 - Engine Overall 15.JPG
Z1 - Engine Overall 15.JPG (121.04 KiB) Viewed 1069 times
Z1 - Engine Overall 14.JPG
Z1 - Engine Overall 14.JPG (152.54 KiB) Viewed 1069 times
Z1- Engine Overall 16 (1).JPG
Z1- Engine Overall 16 (1).JPG (118.25 KiB) Viewed 1069 times
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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BigZCas
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Re: Z1a Restoration

#33 PostAuthor: BigZCas » Mon Jan 22, 2018 9:32 am

New valve guides fitted.
Valves polished and seated.
:) :)
Attachments
Z1 - Engine Overall 25.JPG
Z1 - Engine Overall 25.JPG (128.75 KiB) Viewed 1069 times
Z1 - Engine Overall 22 (2).jpeg
Z1 - Engine Overall 23.JPG
Z1 - Engine Overall 23.JPG (103.16 KiB) Viewed 1069 times
Z1 - Engine Overall 24.JPG
Z1 - Engine Overall 24.JPG (119.09 KiB) Viewed 1069 times
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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BigZCas
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Re: Z1a Restoration

#34 PostAuthor: BigZCas » Mon Jan 22, 2018 9:36 am

And so the assembly begins :D
Attachments
Z1 - Engine Overall 21 (1).jpeg
Z1 - Engine Overall 17 (2).JPG
Z1 - Engine Overall 17 (2).JPG (167.94 KiB) Viewed 1070 times
Z1 - Engine Overall 20.JPG
Z1 - Engine Overall 20.JPG (130.98 KiB) Viewed 1070 times
Z1 - Engine Overall 19.JPG
Z1 - Engine Overall 19.JPG (123.42 KiB) Viewed 1070 times
Z1 - Engine Overall 18.JPG
Z1 - Engine Overall 18.JPG (74.76 KiB) Viewed 1070 times
Z1 - Engine Overall 27.JPG
Z1 - Engine Overall 27.JPG (122.74 KiB) Viewed 1070 times
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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ChrisB
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Location: Nottingham

Re: Z1a Restoration

#35 PostAuthor: ChrisB » Tue Jan 23, 2018 8:27 pm

Lovely bag of goodies there, ready to go back into some beautifully clean casings!
Couldn't help noticing what looks like a crack between the plug hole and the ex valve seat on pot no.2
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chrisw1
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Re: Z1a Restoration

#36 PostAuthor: chrisw1 » Tue Jan 23, 2018 8:51 pm

Hows it coming along ? ........engine back together ? ...great project
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Savage
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Location: Soton

Re: Z1a Restoration

#37 PostAuthor: Savage » Tue Jan 23, 2018 10:25 pm

This is an awesome thread :)
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buzzard
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Re: Z1a Restoration

#38 PostAuthor: buzzard » Tue Jan 23, 2018 10:54 pm

Ref crack between exhaust seat and plug thread. This is a thing that occurs quite often and I've seen it In lots of heads in the past nothing to worry about. I reckon half the heads ive done have the odd crack in them. Buzzard@ thebuzzworkz.
Every man should have a shed (for bikes obviously..)
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Re: Z1a Restoration

#39 PostAuthor: ZedHead » Wed Jan 24, 2018 10:22 am

Coming on nicely :D
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BigZCas
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Re: Z1a Restoration

#40 PostAuthor: BigZCas » Mon Jan 29, 2018 8:46 am

Head Re-Build this weekend - :)
Attachments
Z1 - Engine Overall 29.jpeg
Re-Cutting The Valve Seats
Z1 - Engine Overall 29.jpeg (147.73 KiB) Viewed 918 times
Z1 - Engine Overall 30.jpeg
Checked With Engineers Blue
Z1 - Engine Overall 30.jpeg (80.69 KiB) Viewed 918 times
Z1 - Engine Overall 31.JPG
Stem Heights Checked, Cylinder Head Finished and Assembled
Z1 - Engine Overall 31.JPG (133.68 KiB) Viewed 918 times
Z1 - Engine Overall 32.JPG
Z1 - Engine Overall 32.JPG (104.96 KiB) Viewed 918 times
Z1 - Engine Overall 33.JPG
Barrels and Head assembled
Z1 - Engine Overall 33.JPG (117.87 KiB) Viewed 918 times
Z1 - Engine Overall 34.JPG
Z1 - Engine Overall 34.JPG (123.54 KiB) Viewed 918 times
Z1 - Engine Overall 35.JPG
Cams In, Cam timing Checked OK.
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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BigZCas
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Re: Z1a Restoration

#41 PostAuthor: BigZCas » Mon Feb 05, 2018 5:51 pm

Shims sorted 0.004" to 0.005".
Static setting timing.
Just the sump and cam cover to go :) :) .
Will be picking up from Buzzard this Sunday :D
I will report on how many times I knock the bike over trying to fit it in a couple of weeks.... :lol:
Attachments
IMG_2140.JPG
IMG_2140.JPG (113.2 KiB) Viewed 844 times
IMG_2142.JPG
IMG_2142.JPG (95.99 KiB) Viewed 844 times
IMG_2154.JPG
IMG_2154.JPG (96.67 KiB) Viewed 844 times
IMG_2157.JPG
IMG_2157.JPG (128.73 KiB) Viewed 844 times
IMG_2156.JPG
IMG_2156.JPG (105.12 KiB) Viewed 844 times
IMG_2155.JPG
IMG_2155.JPG (104.93 KiB) Viewed 844 times
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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ZedHead
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Re: Z1a Restoration

#42 PostAuthor: ZedHead » Mon Feb 05, 2018 5:59 pm

Wow that is one shiney engine :luv
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PAULJAC47
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Re: Z1a Restoration

#43 PostAuthor: PAULJAC47 » Mon Feb 05, 2018 6:13 pm

Quality!!!!!!!!!
PAULJAC47,,,,,"She may not look like much, but she's got it where it counts, kid."
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BigZCas
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Re: Z1a Restoration

#44 PostAuthor: BigZCas » Tue Feb 13, 2018 9:54 pm

Picked up the engine from Buzzard on Sunday, very pleased :D
so I made sure the frame was wrapped with Copex, great stuff very tough, there is no way the frame can get damaged using this, would recommend.
Invited my son and mate round to give an hand, the 3 of us put it straight in without incident. :shock:
Attachments
12 (2).JPG
11 (2).JPG
10 (2).JPG
9 (2).JPG
8 (2).JPG
7 (2).JPG
1974 UK Z1a, Candy Tone Brown/Orange
1976 KZ900a4, Diamond Dark Green
1978 KZ1000a2, Luminous Green
1972 GT750J, Candy Lavender
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wheelysteve
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Re: Z1a Restoration

#45 PostAuthor: wheelysteve » Tue Feb 13, 2018 11:34 pm

BigZCas wrote:Picked up the engine from Buzzard on Sunday, very pleased :D
so I made sure the frame was wrapped with Copex, great stuff very tough, there is no way the frame can get damaged using this, would recommend.
Invited my son and mate round to give an hand, the 3 of us put it straight in without incident. :shock:


What size/type of copex did you use?
1975 Z1B Candy Red
1975 Dogs Z1B
1976 Z900 A4
1977 Z650B1
1978 Z650B2
1978 KZ1000D Z1R
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