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Replied by DOHC on topic Front Fender Size for 110/80-18

16 Dec 2023 11:35
DOHC's Avatar DOHC
The CALFAB swingarm and Dymag wheels are sweet!

The 1978 KZ1000 Z1R had an 18 front wheel.  There is a good chance the fender would bolt on, as the KZ650 has pretty much the same forks.  But it has to be a 1978 fender, because the Z1R switched to a 19" front wheel in 1980.

It's possible some of the mid-80s GPz bikes also used an 18" front.  I can't recall.

Another option is a fiberglass fender from Airtech.  They have a pretty wide range of styles in 18".

www.airtech-streamlining.com/vintage-fai...agefendersstreet.htm

But I'll mention that the OEM fenders include a stiff brace as part of the mounting bracket.  You'd probably want to add a fork brace of some kind with a fiberglass fender.

Replied by Wookie58 on topic Bike of the Month.

01 Dec 2023 00:33
Wookie58's Avatar Wookie58
As we move into December (hard to believe we have managed a full twelve months so far since the re-birth of this feature) we are back in the UK for this stunning Harris Magnum from Malcolm (many  of you will know I have a weakness for the Magnum range from the brothers Harris) so over to Malcolm for the "low down"It was the late 70s I together with a couple of friends were involved in production racing with an RD400. One weekend we were at Snetterton racetrack in Norfolk when I saw a bike I had never seen before just leaning against the fence, I went over for a look the badge on the tank said “Magnum”. I knew straightaway I was going to have one, a few months later I found one advertised in motorcycle news (a weekly motorcycle newspaper in the UK) for £2500. I had to pay off the finance on the Honda 250 I was currently riding, then went to London to buy my “Harris”. I had to collect it with a trailer because I couldn’t afford to insure it straight away.After having it a couple of years it was time for an upgrade, so it was off to Harris to see what was available. The shopping list ended up being long and expensive!!!
  1. ·         Dymag Wheels
  2. ·         Lockheed brakes
  3. ·         Marzocchi forks
  4. ·         Harris yokes
  5. ·         New Harris fairing and dual seat
  6. ·         And finally off for a custom black paint job
After a few months with my shiny new bike, I stuck it “head on” into the front of a car because of a side stand malfunction. So it was back to Harris to have the Frame checked this Led to me being off the road for 12 years as I just couldn’t afford to rebuild following the accident.Once I finally got it back on the road I used the bike for 3 years or so but it started to look a bit dated with its skinny wheels so, I bought the running gear from a ZX9R and got Harris to make me a one off swinging arm. I had all the intentions of getting it back on the road quickly but, other things came along and it got pushed to the back of the shed for a good 20 years.About 3 years ago I thought to myself I’ve got to get the old girl back on the road so “back out with the spanners and wallet”!!The engines has been completely rebuilt with new everything, the head was rebuilt by Ray Debben (a well-known UK drag racer) with bigger valves, APE springs and Z650 “under bucket” shims rebore and Wiseco 1015 pistons, Kenny Harman cams, cranks been welded and balanced, 29mm smoothbores, heavy duty clutch and ape gearbox bearings. The electrics have also been upgraded with a MotoGadget V2 unit with switches and keyless ignition.It’s been a lot of work getting all this stuff to fit but I’m happy with it. I’m 62 now and just want to enjoy it till it gets to heavy.

Replied by B-K-Mod on topic Customized Kz750

06 Nov 2023 14:23
B-K-Mod's Avatar B-K-Mod
Sorry for keeping you waiting,
This is a list of the modification that were made.
1- Front suspension, wheel, brake of '94 GSXR 750
2- Complete engine and exhaust from a 2002 ZR-7s 27k km
3- Delete air box with short velocity stack
4- Rear swing arm, whell, suspension, brake from the same 2002 ZR-7S.
5- 3'' clip-on riser from Woodcraft Technologies 

Replied by Kelly E on topic A little bit of an upgrade...

02 Nov 2023 11:15
Kelly E's Avatar Kelly E
Out of curiousity what is a ballpark estimate to do a GS 1100E swingarm conversion on my 77' KZ 1000 LTD? I'm not sure what all it takes to do it.
We were going to get an 81' GS 1100E for parts to support the 80' GS and use the swingarm but it was just oil leaks so now we have 2 GS 1100's but no spare swingarm.

Replied by z1kzonly on topic A little bit of an upgrade...

02 Nov 2023 10:20
z1kzonly's Avatar z1kzonly
Hi, don't mean to but in here? But I seen key word Katana?! And just this morning, I was looking at an older 91-93 Katana swing arm on ebay.
As I have put together and restored  5 - GS1100 conversion swing arms for Z1-KZ's over the past 10-12 years.
My quick question is: Do you or anyone who reads this know any particulars of the original Katana swingarms? Width? Up at frame mounting
I might just buy it for $30 off of ebay for using parts and welding up something out of it wider and a little longer for a Z1/KZ1000.
As I am also redoing an old school Kosman hub with a double weld rim.
By the way! Nice Work on your 650. Certainly looks like you know what your doing!
Good luck and keep it up!
Thanks for your time.
Here is one of my GS conversion projects
Marty in Buffalo 

Replied by Wookie58 on topic Bike of the Month.

31 Oct 2023 11:56
Wookie58's Avatar Wookie58
I know I'm a couple of hours early this month but got a busy day tomorrow. Keeping the "green theme" going this month as we move from South Africa to Sweden for this lovely resto-mod R1 of Anders (purchased in a deal we can only dream of  ) so over to Anders:
Honestly, I never thought that I would own a bike again up until eight years ago when I was offered a Gpz750 -82 in a swop for a bottle of whiskey. The guy asked for a bottle of Grants, but that was even to low for me. So for a bottle of Highland Park (approx 40 USD) it was mine.In a pretty sorry state, ran like crap and looked like it spent some serious time in a hen house.
I had a Gpz750 -82 back in the days, racing and road racing, so the idea of resto-modding it, giving it the brakes and the roadholding that I had wished for in the eighties was given. Now eight years later and a stable consisting of four bikes and countless hours spent in the workshop tinkering with them, I am pretty happy that I am back riding. I use all my bikes during the summer months, not only weekend cruising but also riding to and from work on a daily basis. If I’d known then what I know now I would have saved endless hours as I tried quite a few things that didn’t work. But in the end it turned out just as I wanted, I am not looking for a concourse condition. I want it nice, but it should look like it is being used. I still have a few things to do, engine covers needs some new paint, but that will come when I change the clutch. I have a set of newly painted carbs laying around. But with the other four bikes, especially my resto-mod build on a Gpz1100 -84 and an endless stream of friend that needs carbs rebuilt, it constantly gets pushed back .It's an absolute blast to ride, I really wish that I had the 810cc engine that I had in the eighties, that power and the handling this bike has would be the perfect combo.The resto-mod recipe:
  • ·         Gpz750R1 1982
  • ·         Zephyr 1100 43 mm fork
  • ·         ZR750 17’x2.5 front wheel, 120/70x17
  • ·         ZXR400 310mm front discs
  • ·         GSX600R K4 Tokico four pots front callipers
  • ·         Zephyr 750 Swingarm
  • ·         ZXR400 17’x4.5 rear wheel, 160/70x17
  • ·         ZXR400 Tokico full floating rear calliper
  • ·         Öhlins period correct shocks
  • ·         Delkevic 4-1 stainless exhaust
  • ·         Homemade rear-sets with modern foot pegs.
  • ·         Opel 308 Signal green paint from the seventies
Thanks guys for all the help during the build, and the build thread is: GPZ750R1 -82 Will it be yet an other green Kwack - KZRider Forum - KZRider, KZ, Z1 & Z Motorcycle Enthusiast's Forum

Replied by Wookie58 on topic And finally, Wookie's 82 begins !

22 Oct 2023 09:52 - 22 Oct 2023 09:56
Wookie58's Avatar Wookie58
gd4now your wish is my command. Have managed to get the exhaust wrapped up this weekend and I couldn't be happier with the end result. I wanted to keep the look of the Harris but repair the damage and maximise the clearance. A big issue for me which was the driver for "tucking it in" as well as the aesthetics was my "little legs" when I am at a standstill my legs are real close to the bike and I didn't want to burn myself when I put my right leg down   Hope "Harris" don't mind me putting their name on it (some of the original is still there !!) The baffle will be wrapped in wadding on final assembly
It looks close but there is 3mm of clearance throughout the swingarm travel 

 

Replied by Rusty B1 on topic swingarm question

04 Oct 2023 15:25
Rusty B1's Avatar Rusty B1
Thanks for the kind words. As for the shocks- I just installed a set of Ikon Basix- chrome bodies with black springs-
A noticeable improvement  over the old OEM units and they look good too!

Early Z1 Swing Arm (No Date Code) & Bronze Bushing Install was created by z1kzonly

03 Oct 2023 23:03
z1kzonly's Avatar z1kzonly
1st?? Is the private  messaging system working? Need to chat with MiKaw Matt!  About some Chevy small block items! 400CI 4 bolt main cap block with steel heads & matching large harmonic balancer.. And also a set of 90's modern style Aluminum angle plug heads. Machined in for screw in rocker studs. Or anyone else?   For Sale!

Hello again. Yes! I know most of the items with date codes! Couple months ago Brad Jr. OINK! Sold an early 72/73 No Date Code Swing Arm on eBay for $236.
He had all the early parts also, Early fork boss's for fender. He had an ugly flaky chrome no shift pattern chain cover. The ad is gone from time constraints.
I Think I have a similar situation? This one I have is pretty crudely built! The production stamping marks on top were the date codes ugly, marks, lines from presses? I don't know?
There is no date code stamping. Also have a no shift pattern sprocket / chain cover. The inner chain oiler pump scored the inside
NOW! needle bearings are pressed in Bronze bushings, the stock steel sleeve bush is too long. it is the one for the 78 KZ1000 that was in with this lot?
The lip on the bronze bush is .164".
I'm wondering if I have to omit the OEM dust cap shields with the O-ring. on each end at the inner sides of frame?
I don't want to start pressing in bushings without knowing the correct geometry of this? Never did this in the past.
I'll post some better pics tomorrow. More pics later.
Just want to know when tha kaw folks started dating the top of swing arm??  Or the worker was new and took a break at the production line?  

Replied by DoctoRot on topic Starting out on KZ 750 B

23 Sep 2023 17:37 - 23 Sep 2023 17:38
DoctoRot's Avatar DoctoRot
These are fun bikes to fiddle with because there is considerable room for improvement. 

I would not advise porting. A light sanding to remove casting flash and blend in the valve seat is OK but the valves and ports on these engines are already too big for the displacement. 

The number one thing I would recommend doing is getting a set of decent 1” over length shocks.
Second is aftermarket fork springs and some type of cartridge emulator. 
these two mods make this bike very fun to ride. Very nimble with the rear raised.

take the time to shim the swingarm properly 

I would recommend ditching the points for the later electronic ignition, or better yet an aftermarket ignition from power arc. The late model OEM electronic ignition has more initial timing and advance than the points and the Power Arc optical ignition has even more still. Really wakes these engines up. They suffer from poor combustion chamber design so anything there helps. 

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