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KZ1000 A1 Engine & Frame Numbers - Can These Be Correct
Posted: Mon Oct 24, 2016 5:25 pm
Author: pertonpc
Can I have some technical advice please Guys -
According to Z Power website a Z1000 A1 should have
frame no. KZT00A-027500 or less
engine no. KZT00A - 042500 or less
An actual bike (which looks like an A1) is showing these numbers
frame no. KZT00A- 5039** seems way too high
engine no. KZT00A- 0128** seems ok in the range
if the 5 was a zero it would be 003900 ish which would be in the range but seems way low compared to the engine.
Did I hear something about Lincoln Nebraska bikes getting a 5 in the number somewhere to denote USA built ??
Could these numbers have ever been supplied together from the factory on a Z1000 A1 machine ??
Please give me some pointers here people
Cheers from Mark
Posted: Mon Oct 24, 2016 5:49 pm
Author: tlc
Everything you say is true Mark.
Re: KZ1000 A1 Engine & Frame Numbers - Can These Be Corr
Posted: Mon Oct 24, 2016 5:59 pm
Author: Garry.L
pertonpc wrote:
frame no. KZT00A- 5039** seems way too high
Are you sure the A is not a B Mark?.... that would make it a 77 LTD on those numbers.
https://www.z1enterprises.com/store/mod ... 1000-77-81
Posted: Mon Oct 24, 2016 7:48 pm
Author: pertonpc
Thanks Guys,
Not at all sure on anything yet Garry,
Not seen it in the flesh - only photos.
Are there any tell tale signs for a B LTD frame I could look out for ??
. . . so could numbers that far apart have been assembled like it at the factory

Posted: Mon Oct 24, 2016 7:56 pm
Author: warren3200gt
Aren't the back end of the frames different on LTD's? Thought that was why LTD's are much cheaper because there is a lot of work to convert to make desirable. Or is that just 650's?
Posted: Mon Oct 24, 2016 8:13 pm
Author: pertonpc
Warren
I think the LTD thou still had a duck tail - unlike the 650 versions.
I had an LTD 1000 seat fitted to a Z1 frame ok
I agree rear wheel was smaller size so I don't know where the difference if any lies.
Someone will be along soon to enlighten us I'm sure.
From Mark
Posted: Mon Oct 24, 2016 8:22 pm
Author: Garry.L
pertonpc wrote:Thanks Guys,
Not at all sure on anything yet Garry,
Not seen it in the flesh - only photos.
Are there any tell tale signs for a B LTD frame I could look out for ??
. . . so could numbers that far apart have been assembled like it at the factory

Exhaust hangers on the LTD are very different to the A1.
I was always led to believe the engine & Frame numbers stopped being 'close' after the Z1b as the engines were then used in different models, ie A4/5 and Ltd etc.
Posted: Mon Oct 24, 2016 8:39 pm
Author: pertonpc
Hi Garry,
A lad off another forum has just posted some A1 frame and engine numbers from December 1976 builds at the Nebraska factory - and they seem broadly in line with these
e.g. frame 503941 belongs to engine 012949
which is pretty close to what I am being quoted on this bike so it looks like it could well be legit.
if anyone has a piccy of a genuine A1 exhaust hanger frame bracket and an LTD Thou one to compare I would be grateful for either.
Cheers
Posted: Mon Oct 24, 2016 8:46 pm
Author: Garry.L
pertonpc wrote:Hi Garry,
A lad off another forum has just posted some A1 frame and engine numbers from December 1976 builds at the Nebraska factory - and they seem broadly in line with these
e.g. frame 503941 belongs to engine 012949
which is pretty close to what I am being quoted on this bike so it looks like it could well be legit.
if anyone has a piccy of a genuine A1 exhaust hanger frame bracket and an LTD Thou one to compare I would be grateful for either.
Cheers
Mark...
Pix on my for sale thread.
http://www.z1ownersclub.co.uk/forum/vie ... hp?t=39125
Exhaust bracket on the A1 is one piece solid. Ltd is two tubes like the Z1 set up.
Posted: Mon Oct 24, 2016 8:59 pm
Author: Gus
Posted: Tue Oct 25, 2016 7:20 am
Author: pertonpc
Great thanks lads.
The one I am looking at is a dead ringer for Garry's type of rear footrest hanger - not the tube type in Gus's picture so I think we are safe to rule out an LTD frame.
Cheers
Posted: Tue Oct 25, 2016 8:16 am
Author: z1bman
could be a mk2 frame ?
Posted: Tue Oct 25, 2016 8:24 am
Author: needaz1100r
pertonpc wrote:Warren
I think the LTD thou still had a duck tail - unlike the 650 versions.
I had an LTD 1000 seat fitted to a Z1 frame ok
I agree rear wheel was smaller size so I don't know where the difference if any lies.
Someone will be along soon to enlighten us I'm sure.
From Mark
1000LTD B1/B2 77/78 had a Z1000A1/A2 engine and Z1000/900A4 tailpiece.
1000LTD B3/B4 79/80 had a Z1000A3/A4 (MK2, square cam cover) Engine and Z900 Tailpiece.
1000LTD K 1981 onwards had Z1000J rubber mounted engine, distinctly different look with no tailpiece.
LTD B1-B4 had exhaust and footrest hangers similar to, if not identical to the 900A4,ie tubular not pressed steel.
Z1000A1-A2 side panels and tail piece are listed also for the Z1000 LTD B1-B4.
LTD has 16" rear wheel.
LTD has an odd shaped tank.
LTD has a strange headlamp bracket that bolts to the yokes and a horrid stepped seat, which needs a taller grab rail.
That, folks seems to be about it, unless anyone knows any different.
Looking for more info all the time.....
Posted: Tue Oct 25, 2016 8:43 am
Author: Gus
LTD has 16" rear wheel.
LTD has an odd shaped tank.
LTD has a strange headlamp bracket that bolts to the yokes and a horrid stepped seat, which needs a taller grab rail.
That, folks seems to be about it, unless anyone knows any different.
Looking for more info all the time.....
From memory
rear disc and spacer and rear caliper
rear mudguard front mudguard
Gus
Posted: Tue Oct 25, 2016 9:31 am
Author: Garry.L
Some of the problem is that there are a lot of Ltd's about being passed off as Z1/A4's as it doesn't take a lot to make the former look like the latter.
However making a Ltd look like an A1 would be a bit more involved. So would it have been worth the effort doing in the first place?. Always worth checking though.