Re: 1982 Gpz550 - Grid Rocket - Coated in pure sexyness!

sheatona

I void warranties.
Howdy do all, I'm new to the forums, at least as new to actively participating and wanted to officially start documenting my build as it progresses, anyway without boring everyone with long winded introductions.

The bike - 1982 Kawasaki GPZ-550
Paid - 600$ running and titled

My goal is to take this bike, clean it up and blend the vintage styling with modern technology and handeling, and having a sleek daily head turning Tron inspired speed machine, hence the grid reference in the title [obvious fanboy here] 8)

Here's the bike the day I picked it up, naturally the guy saw me off with an empty tank of gas.
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First thing was first, it had a few electrical issues going on with the birds nest around the battery, and some seriously rigged up headlight, I still cant figure out how he actually had it working with everything it had going on.

I pulled the tank, seat and most of the covers and fenders to get a better look at everything and degrease all the layers of delicious cake.

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The bike ran, but sputtered in the low and high rpms, I pulled the carbs off and they didnt look all that bad, they were pretty clean and everything was moving at least, but I hit them with some cleaner and soaked the upper and lower covers in degreaser, while everything was cleansing I put some new plugs, oil and oil filter in it, and picked up some new fork seals and fork oil since one of the seals blew out from strapping it down to hard on the way home, muh bad.

At this point it was at least running great, idling smooth and I could rev the motor without it wanting to die.

This was probably a good thing with the forks, as I defiantly would have been buzzing around town like a maniac instantly if it was up and ready to ride without checking over anything, but I could see the brake discs were already worn funny and were slightly grooved, so I went to check the pads and found the front right caliper was stuck closed, and the back pads were non existent, so I figured lets just go ahead and clean up the calipers, lines, and master cylinder and get some fluid from this decade pumping through the brake veins.

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Calipers looked a little rough around the edges, and half the paint was chipping so I figured, why not just hit them with the sand blaster, give em a fresh coat of paint and replace the seals and give me that warm, fuzzy feeling of knowing I did something safe right off the bat.

After a bath, a scrub, and having a blast.

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I gave them a last wash, hit them with some alcohol and primed with high heat primer.

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With my lack of fancy shop, garage.. or even driveway for that matter, you work with what you got ;D
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With all this going on, I really liked the sound of the bike but it was a bit too bee-hivish at some rpms, so I pulled the muffler and took out the baffle, or whatever you want to call it.

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It was covered with either a bunch of crappy layers of paint, or one very heavy crappy coat of paint, and was starting to build up some rust in areas so I just grinded and blaster it into a soon to be repainted piece of steel, I'm not sure yet but I may weld the end cap of the baffle to help keep some back pressure, but.. just not sure yet.

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Today, I also managed to get my tank stripped of the old paint and smoothed out the majority of the pitting on top, it wasnt to bad honestly, but I want to make sure I only have to paint this thing once, once I get some extra cash set aside, I'm going to order a fancy pop up gas cap I found with matching weld in bung, my welding skills are not up to par yet, so I'll be having a buddy weld it up for me, I'll just cut the hold and tack it in place lol.

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I also hit the petcock and hardware, so everything looks pretty much as new as it can, which I'm very happy about!

Right now I have my calipers in the oven, going through the primer curing phase, I ordered some fork boots and the caliper seals/dust seals and they should all are scheduled to be in tomorow, so hopefully the next update will have painted, installed working calipers, and have my new fork seals replaced!

Let me know what you guys think, feedback's always appreciated!
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Fun little bikes those 550's. We had one as the runaround bike in the shop I worked in some years ago. They rev out quite willingly and are a lot faster than you'd think.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

hillsy said:
Fun little bikes those 550's. We had one as the runaround bike in the shop I worked in some years ago. They rev out quite willingly and are a lot faster than you'd think.

Do you happen to know if they are restricted? I noticed when I revved in neutral it wants to stop around 6-7k and will hold there consistently, not a major deal since its still pretty far up there, just curious.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

I woke up early today and couldnt sit still waiting for the expected phone calls telling me my parts arrived, so I started filling in the few dings in my tank and filling over the badge mounts, no badges needed here!

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I still have some small imperfections I need to touch up, I'm pretty anal when it comes to being as perfect as possible, I left the gap cap key at the shop so I wasnt able to remove the cap, but I think I'm going to re-blast it and actually give powder coating a shot, since the caliper paint didnt thrill me after all the effort I put into it.

Anyway, the best part of my day!

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It only took a few minutes to get the calipers back together, a video on youtube REALLY helped me out getting the dust seals situated

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But man they looked sweet! I just fear that all the work will be ruined since some of the paint already started to wrinkle after getting a little brake cleaner on them :(

I blasted out my brake lines, and cleaned out all the old gunky liquid that was disguised as brake fluid in both reservoirs.

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This is my one man bleeder, cheap and reliable from harbor freight, for the price, you cant really beat it.

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I didnt bother doing the front brakes, I figured since I have to pull them right back off the bike I'll wait until the forks seals are replaced.

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After everything was back in place, I loaded it back up and brought it down to my buddies shop for a safer work space, and a greatly better selection of fancy tools.

Feel free to say as many good things about the wall art ;)

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I had to pull off the header pipes, and wrestle with the stand, it's really meant for a smaller dirt bike, but It's what Im able to use in the corner out of the way of normal business lol, it just took all my bodyweight and a pretty big pry bar to get it to lift and lock in place.

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But, I got it up on the stand, pulled off the instruments up top, pulled off the wheel, and loosened the pinch clamps and pulled the forks out the bottom, measured the top fork tube diameter to make sure I get the right clip ons this weekend when I stop by Dime City cycles since I'll be in the area.

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I'm not sure if I'll keep this headlamp bracket, or cut it down or what just yet, I am absolutely going to put a round headlight on this, and do whatever it takes to retrofit a Morimoto mini projector with an HID bulb, and a single CCFL ring, havent seen anyone do that on a round headlight yet, I'd like to change that ;D.

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That's all I managed to get done today since I got a late start waiting for the parts to show up, first thing tomorrow morning I tackle the fork seals and hopefully take it for a first real test ride!

Luckily for me, I'm fortunate enough to have buddies in the bike business [professionally speaking, no backyard mechanics here lol] to help me out with this project when I get stuck, or need some help and if anyone out there is in and around the Datytona Beach area, check out The Motostop, they officially opened the shop a little over a year ago have excellent prices starting around 30$/hr.

Their facebook link is below for anyone interested.

http://www.facebook.com/pages/The-Moto-Stop-LLC/153940998024760

Dont worry, that's all the advertising I'm doing. ;D
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Managed to get the fork seals sorted out yesterday and finally have some forks that push back up is a nice change, also got the new fork boots in place as you can see, and put on the new brake pads I desperately needed, while I was at the shop I did a little catalog shopping and picked out some new parts I'm very excited about!

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I really liked the look of these clip ons, and they should be here wednesday ;D

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I'm not 100% on these Koso gauges I found, I really love them but I need to do a little research and see exactly how large they are to see if I can mount them without them looking too out of place.

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I also found this awesome LED headlight, I think I may have changed my mind on the projector retrofit since I really love the idea of this headlight, and the pricepoint is about the same with less equipment and less current draw.

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and just some pod filters, I checked out some K&N's but I really just cant justify the cost of them, since I wouldn't have any real noticeable gain by doing so.

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Hopefully I'll have enough time before Wednesday to get my tank sanded to perfection and at least ready for paint, get my clip ons put on and get this thing ready for it's first real test ride!
 
Re: 1982 Gpz550 cafe build - Grid Rocket

That's just catalog msrp, the prices Im paying for everything is much better then the numbers on paper, but still, even at 300 it would be cheaper then me finding a large enough bullet headlight, buying the projector, ballast, bulb, ccfl ring and inverter, and hoping I carefully cut up the light to allow everything to fit and function correctly.

Either way, I have a a vision in my head and I tend to cross the boundary of reasonable things, I've already realized I cant bring my ideas to life without spending some money, I've prepared myself for that a long time ago ;).
 
Re: 1982 Gpz550 cafe build - Grid Rocket

If it were me I'd spend more on quality air filters and less on the headlight ;)
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Your build is strikingly similar to mine. I got an 88 GPX750R 2 weeks ago and have done a lot of things to it much like you. I replaced the forks with used ones that were not leaking. I bought some Triumph fork boots that fit great. I replaced the brake pads and sanded the rotors. I changed the oil, and tightened up the clutch pack bolts that cause the engine to drag. i put on air filter pods and put a restrictor in the pod filters to create pressure needed for the carbs to work. I stripped off all plastics except for tail because it houses the tail light. I plan to ride it to make sure all works well and then dive into cosmetics. I want a modernized Italian style cafe. Ill start a thread on here on my build and lets see how we both do.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

I'll have to keep an eye out for it then, I'm not exactly sure what I'm specifically going to do with my tail section just yet, but I will be fabricating a new one to hide my battery and some electronics, I've been looking into the "ghost lights" tail lights that are flush mountable and can be sanded to fit contours giving them a thinned down layer of paint so they arent visible when the lights are off, but are perfectly functional while on.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Nice build so far. I have an 82 GPZ750 that I hope to restore in the next few years once my 350f Cafe is done. Ill be watching to see where you go with this.. keep 'er comin'.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Thanks! i have a laundry list of great ideas im dying to try, starting with giving power coating a shot, I just have some heavy convincing to do before I can talk my wife into letting me wire up a 220 outlet and put an oven on the porch or the side of the house first lol
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Extra sad faceeee =[[[ Turns out my clip ons were back ordered on me, and carb number 3 looks to have a stuck float I noticed a slow drip coming off the bottom today, I had to buy a new battery the one it came with just absolutely died on me and wouldnt hold a charge any longer, but it's home, its running, and I took it for a short test run up the road and it's a LOT torquier now then before the carbs were cleaned up, I still have some air in my front lines :mad: even after bleeding a few times before I ran out of time today. I should have some spare time this weekend while I'm out of town to work out the air in my hotel parking lot ;D, and fingers crossed my clip ons arrive before I get back!
 
Re: 1982 Gpz550 cafe build - Grid Rocket

I have a KZ550H1 GPz. I bought the generic copy of the Koso RX-1N. Mine uses a Hall effect sensor. It truthfully a pain in the ass. The GPz550 uses a 2240:60 ratio mechanical speedo.

This mechanical speedo is a generic copy of the RX-1N but uses a mechanical speedo.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120881034475

The main issue that I have with the speedo is that no mounting hardware came with it. Since my speedo was broke, I took it apart. The mount for the factory GPz550 instrument cluster will fit the speed. Slight modification to the bracket and you can even use the factory bushing. You'll have to provide your own 8mm - 1.25 nuts. I have not been able to get the fuel gauge to work with the speedo. Also, the instructions just kind of suck.

I purchased my GPz550 for $650. I also purchased parts bike for $300.00. Mine is beatup, but I still loving it.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

This is why in using my factory gauges on my 88 GPX750R. Everything will work. I trimmed the warning lights off the gauges and will install LED warning lights on the upper triple cover. Now the tach and speedo will fit nicely between the clutch and brake master cylinders.

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Re: 1982 Gpz550 cafe build - Grid Rocket

That looks real good with the gauges trimmed down, especially with the symmetrical look going on between the master cylinders, very cockpit-ish. I wouldn't mind using my factory gauges, I just need something with more modern aesthetics to get the look I want, I'm certainly keeping the factory gauges though! For now I've only been picture browsing, once I'm ready to actually order something I'll do some more in depth research to see what my best option is as far as keeping everything compatible.

=\ clip ons still on back order, very disappointing.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

Looking good. I've always wanted a GPZ. I have the snotty little brother the KZ550. I also have that same MAC 4-1 exhaust. I didn't like the look of the giant can either so I cut it off right at the weld and made a small baffle out of exhaust pipe reducers from auto zone and then packed it with a stainless steel dish scrubber. Works great for back pressure, but not a huge difference on the noise. Sounds awesome though.
 
Re: 1982 Gpz550 cafe build - Grid Rocket

I actually dont mind the exhaust can that much, I did shorten it down so it didnt look so much like a battleship cannon, but I do love the sound of the 4 into 1.

Today I managed to get some more done between the other projects I have going on, seems hard to dedicate time for my own projects over others, anywho I was visiting with family last weekend in St Petersburg and made a trip over to the Dime City guys and picked up some bent tubing to officially start stripping down the rear and start making my seat!

I cut it down and welded in the U pipe, seriously tough piece of metal they gave me, thicker then the stock frame by a good bit.

I dont have much to work with but, this was my detailed technical plan to pick the length I wanted lol.

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I thought about trying to lower the whole rear section of the seat frame, but after sitting on it with the little kick upwards, it still barely clears the tire, but I should have enough space for the shock travel.

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Since I had the MIG out already, I figured I'd give this a shot, I cut down the S pipe that was formerly inside the exhaust, and stole one of the end caps, I figured this would help retain some of the back pressure and also quiet down the sputteryness it has, was a little annoying at higher rpms, at least to my ears.

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Sort of ran out of steam at this point, I've been sanding fancy fiberglass stereo pieces for a friend of mines bus I've been remodeling all day, and this is the progress I managed to get done between drying times ;D

I also cut off all the brackets I no longer needed and started removing all the components mounted under the seat in preparation to extend the wiring and relocate them under the rear hump, along with a new sealed battery, I love the monoshock on this bike and I fully intend for it to be seen!
 
Re: 1982 Gpz550 cafe build - Grid Rocket

As a heads up you should disconnect your battery when you weld. It has been known for batteries to fry when you run a current through the frame.
 
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