1980 KZ750G front fender is shorter and looks a whole lot nicer.
Grease the swing arm pivot, it's behind the down tube on the right side.
It has a separate regulator and rectifier, combined unit is available if yours craps out.
MAC is it for exhaust (aside from DIY), 2 into 2, or 2 into 1, your choice.
B7ES spark plugs (I think), someone will be correcting me if I'm wrong.
I run Shell Rotellat T 15W40, and so do a lot of other twin owners.

I converted to 17" radials, so can't help you with tire selection.

hell all i have a 1982 kz1000 that i would like to get stretched. i have a 2004 factory gsxr1300 rear wheel complete with sprocket, axle and rotor.

with this wheel and lets say a stock kz swing arm that has been extended whats my option for brakes. i would love to use the stock brakes because when i have the stock kz swing arm extended i can just have those mounting locations moved around and can also save money and time looking for parts.

if this wont work what will i need to look for . i have found a couple of gsxr swing armes already extended or even a after market swing army built for the kz

i think my biggest issue is the rotor on the busa wheel is not going to match up with the stock kz brake caliper

any help would be nice

these are things for sure...assuming those things are decent shape...two up is safe...make her scoot up like there is just one weight mass...it makes ahuge difference..my gal ends up back a bit in the city...when we begin to hit the road or fast sweepers. ....I'll reach back and tug her leg forward,,,she has learned this means scoot tight...we are outta here...

martin_csr wrote: You probably ought to install new Progressive springs in the font & new shocks at the rear. You should also check the Fr & Rr wheel bearings, swing arm bearings, & triple tree, to make sure they are rock solid. Also, do any drive shaft checks. A flat tire can cause the bike to sway, so make sure the tires are good.

Most passengers don't understand the risks of motorcycling, so it is your responsibility to make sure the bike is suitable for two-up riding. Just expressing concern for the passenger. Personally, I would never get on the back of a motorcycle.

Ederer wrote: Thanks guys! I got more time on the bike last night and I just can't wipe the smile off my face!

My only complaints are a small amount of wobble when cruising at 65-70 and the rear brake requires a lot of pressure to be marginally effective. It was pretty windy so I'm sure that contributed to the wobble but I think maybe a steering stabilizer/damper might be on the short list for upcoming modifications.

As for the brakes, not sure if the used pads that came with the caliper assembly are contaminated or if I have a gross mismatch between master cylinder size and piston bore. Pads are easy and reasonably cheap so I guess I'll throw those at it first. If that doesn't fix it I guess I'll be looking at the master cylinder. I used a 14mm master that was from a zx10, assuming that a similarly sized bike would have similar hydraulics to the gsxr1000 caliper. Time to warm up the old search engine for some researching there.

Don't bother with a steering damper; if it does anything at all it will only hide a problem that will get worse. KZ650 bikes do not wobble at all when everything is in good shape, so you really need to find the source of the wobble. I had a high speed (90+mph) wobble on mine several years ago (scarey stuff). It turned out to be a bad tire (Michelin Macadam) even though both tires looked great and were not very old. In trying to track down the problems I did the following:

Replaced steering stem bearings with tapered roller bearings. This made a big improvement in steering as the original loose ball type bearing races were dimpled, but it didn't change the high speed wobble.

Replaced swingarm bushings. They were worn and replacing them somewhat reduced the amount of wobble, but they were not the cause.

Replaced wheel bearings - no change.

Replaced fork oil and shocks - improved suspension, but didn't reduce wobble.

After all that I replaced the tires and POOOOF! the wobble is totally gone from 0 - 120 mph (max speed on my bike). The bike rides and handles like it is new. I highly recommend you find the source of the problem rather than masking it with a damper. Once you find and correct the problem you will be amazed at how stable the KZ650 is at any speed. Ed

You probably ought to install new Progressive springs in the font & new shocks at the rear. You should also check the Fr & Rr wheel bearings, swing arm bearings, & triple tree, to make sure they are rock solid. Also, do any drive shaft checks. A flat tire can cause the bike to sway, so make sure the tires are good.

Most passengers don't understand the risks of motorcycling, so it is your responsibility to make sure the bike is suitable for two-up riding. Just expressing concern for the passenger. Personally, I would never get on the back of a motorcycle.

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chonus wrote: I can't see the pics u put up, but I have considered that. I just see that being a very temporary fix. Plus, it's on the top, which is the side where all the tension is right? If I look down the chain it comes to a slight peak where the pivot is, maybe an eighth too high, just resting. I know I'll need more clearance once I'm riding and things are bouncing around. A slider will only make that peak a bit higher. I know I could pull a bit of material off the pivot tube but will it be enough? How much clearance is needed there?

Don't cut on the pivot tube; that could create a bigger problem and may not keep the chain from hitting it. Here are links to the pics:

I can't see the pics u put up, but I have considered that. I just see that being a very temporary fix. Plus, it's on the top, which is the side where all the tension is right? If I look down the chain it comes to a slight peak where the pivot is, maybe an eighth too high, just resting. I know I'll need more clearance once I'm riding and things are bouncing around. A slider will only make that peak a bit higher. I know I could pull a bit of material off the pivot tube but will it be enough? How much clearance is needed there?

Haybus wrote: For reference, my frame is 9" from the ground with a 1" drop upper triple. Header pipe is about 6" off the ground. Compared to my other bikes that's a ton of clearance and I've never hit anything. Biggest issue is the width of the motor, but I don't plan on road racing so hopefully I won't scrape the ground in normally cornering.

Those fork leg extensions are a neat idea, if they fit tight to the leg. The One Off link looks like maybe they clamp to the leg? Good luck with your project.

Alan

I like the height of my 1978 LTD1000, so I measured the clearance on it.
The frame has 7 1/4 inches clearance and my Kerker has 4 1/4 inches clearance.

I then transferred these measurements to my mock up.
When I did this, my front forks dropped 1 inch. If I left it at this height it looks like a 1 inch fork extension would work. I'll know more after I get the triple tree mods done and swingarm bushing made. I think I'm close on my measurements, but I won't know for sure till I have a rolling chassis.

Haybus wrote: I would plan on about 4" of travel in the rear. Not sure your current mock up will support that. You may have trouble with piggy backs clearing the over brace, unless you cantilever them out a bit.

Alan

Yes I know it's too low at this time, but I ran out of front fork height on this mock up.
I'm not 100% sure what I'm going to do about the shocks at this time, but I'd like piggy backs if I can figure out a way of doing it without removing the overbrace.
Good news is, Tom from cycle one off e-mailed me back and said his fork extensions would work perfect for this type of project.
Now I need to get the triple tree mods and swingarm bushings done, so I can figure out how long of fork extensions I might need.

Had to redo some other items as I bolted certain painted items the paint was ripping. But I'm on the express path now to hopefully getthis bike on tthe road in a couple weeks. I'm in the get through little items and bolt things on phase. I polished the swingarm and going to assemble it today. I fixed the paint ripping in the sprocket and rotors, rebuilt he brakea and various other items.