KZ550 powered YZ125 project

I rebuilt the front forks last weekend.....right now i'm waiting on some parts. Also picked up some alum wire for my mig to see if i can fix a few things my self instead of paying to have it done. Now that all the big stuff is out of the way i'm having trouble getting motivated to go into the garage to finish it.....

Things left to do:

Throttle cable bracket
Install front and rear sprockets (when they get here)
Run clutch cable
Repair where an exhaust stud was broken when the bike was dropped
Finish gas tank.....

Not a whole lot left but, i dont seem to have the drive right now since school started and i picked up an xbox 360 so i'll be ready when forza 3 comes out

p.s.

Going to the Indy GP today....

Yeah, it's always the details that really suck up the time and effort on a project. I think I spent twice as much time on the details of my last project (which is still not 100% done), than the actual build. I'd say about 1/3 of the work is to get it ridable, then 2/3 is to get all the details and tuning worked out.

I haven't touched the 360 since last winter. My halo skills are probably so rusty I'll be nube hell for weeks.:laugh:

What mig are you using? I've been using flux core on a Hobart. It's ok, but messy. I haven't tried Aluminum yet. Let me know how it goes.

Maybe this will get you motivated!

I saw this on a local classified.

cgi.ebay.com/ebaymotors/Honda-HONDA-1986...trksid=p4506.c0.m245

I'm actually using a HF 220v welder right now :laugh: ....it gets the job done. I'll let you know how the alum welding goes but, right now my tank has c25 gas in it and iirc you should use straight argon when welding alum since it is very picky about being kept clean.

That bike is pretty sweet with a newer 650 engine on it. I am starting to want to work on her again after going to the GP yesterday......seeing all the bikes was cool.....here are a couple pics a buddy took while he was there.

Tiny pic is being gay so you'll have to click on each pic to see the actual pic i uploaded

Very cool pix!

I like the carbon fibre on the duck.

roy-b-boy-b wrote:

Maybe this will get you motivated!

I saw this on a local classified.

cgi.ebay.com/ebaymotors/Honda-HONDA-1986...trksid=p4506.c0.m245

Sad thing about that Honda/Kawasaki is that that 650 kaw twin motor probably has less horsepower than the original Honda 600 single, and it weighs more to boot. lol

TerryK wrote:

roy-b-boy-b wrote:

Maybe this will get you motivated!

I saw this on a local classified.

cgi.ebay.com/ebaymotors/Honda-HONDA-1986...trksid=p4506.c0.m245

Sad thing about that Honda/Kawasaki is that that 650 kaw twin motor probably has less horsepower than the original Honda 600 single, and it weighs more to boot. lol

Yeah, in many ways, I think it's more impressive/outrageous to stuff the inline-4 KZ550 motor in the dual sport!

I think the original honda motor was a 650 as well.

Getting closer and closer.....I need to repair where the exhaust stud threads into since it was damaged when the bike was dropped but, other than that its ready to be started.

To do list to ride:

Fix exhaust stud
Get pod filters
Jet kit
Sync carbs
Send gas tank to get finished

To do list for the street:

Head light
Tail light
Turn signals
Street tires
Insure
Plate

Have to click on the pic to see what i actually uploaded



^ straight pipe exhaust

^just enough room for pod fitlers....need to pick up some wire loom also


^ What do those two lower ports go to? There is one vacuum port hiding on the right side that you cant really see in the pic but, what does she go to as well?

Thanks,
-Nelson

nelson8708 wrote:

^ What do those two lower ports go to? There is one vacuum port hiding on the right side that you cant really see in the pic but, what does she go to as well?

Those two are just bowl vents. Stick a vac hose on each one and route them with their open ends up and out of the way in case the bike tips over. Originally on the kz550's they went up under the tank/seat area and just open ended there. A tiny bit of air will flow back and forth into those ports, but not really any steady flow. Make sure there is no restriction in the hoses so the bowl don't get de-pressurized. I would not even put a filter on them.

The single vac port on the far right carb (#4) is for the vacuum petcock on the kz550's. Just plug it if you have a standard petcock.

The bike is definitely more sick than the zx650 twin motor honda.

When the time comes to finally tune the carbs, hopefully I'll have a site posted on those tk22 carbs you have. I'm still collecting data right now.

Tuning carbs is defintally something new to me. I might get to start her this weekend. If i do i will get a vid for you guys. Once i know that she runs i'm going to make one of those home made sync tools and order some jets. Since i'm putting pods on it and just running straight pipes how many steps larger jets should i get. I read that rule of thumb is 2 for pods and 1 for a 4-1 header but, since straight pipes isn't going to help with power i was thinking jumping up 2 steps larger.

What do you think?

-Nelson