1982 GS450 Build

jeffasaurus2

Active Member
Long time lurking. Lately I've been asking a load of questions to the other guys with GS450 builds happening so I figured it's about time I contributed something.

Picked up this beauty two years ago with a bunch of extra parts and even a second engine.

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Pretty gnarly, this is even after I removed some things (Cruiser pegs clamped to the front frame)


Had the pleasure to repair years of half-assed maintenance. Rebuilt carbs, replaced o-rings (including the rtv silicone ones for the intake), a couple cables, the works.

Took it on a ride or two, got some fun in,

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Then I tore into it. No garage means living room motorcycles! I shortened the rear fender and swapped out the enormous taillight. Rebuilt the forks with Progressive springs, replaced and rebuilt brakes, new tires, new wheel bearings, new chain and sprockets, and chased some oil leaks.

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And that's how its been for the last year.

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One reliable lady, only let me down once and a new battery fixed that.


A blast, but soon I came across this.

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The fabled E/S Model tank, for a reasonable price!


A local guy had one from his p.o. and didn't really care to do the modification work to fit it. The interior was a bit of a mess, I treated it with a POR15 kit and it took care of that issue.

So after riding until mid-December, thanks to our wonky 60 degree 'winter', I finally decided to start some major modifications to clean it up. The fun began!

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Ideas, definitely not that seat.


I chopped up the front of the frame and made the front mounts for the new tank.

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The rear of the tank will have a bracket, that is yet to be made, utilizing the existing frame mounting points.

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I was debating what to do with the gauges, I really liked the idea of the stock ones but they were so large I couldnt do it. I wanted to do the mini gauges that are often used but read some so-so reviews of their durability so figured I'd spring for something fancy.

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Acewell! Haven't had a chance to use it on the road yet but everything lights up!


After taking everything off the front end and cleaning it up it looked a bit exposed. Then I remembered I had seen a fella on one of the forums that wound up using what was chopped from his fender as a fairing. I gave it a shot, I think it turned out pretty stinkin' sweet.

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Eye see you!


Then I took a look at the 'triangle'. I had really wanted to keep the stock air box but, saw no way that I could feel the bike was proper with that brick stuffed in there; So I went all out. I created a small under seat electronics tray, ordered some K&N pod filters, and decided on a much smaller Li-Ion battery.




To do all this I found it easier to remove the rear wheel, and while doing so I decided to remove the swing arm and take a look at the bearings. Good thing I did, One was literally concreted solid. So after waiting nearly two weeks for correct bearings I was able to reassemble half the bike.

The engine had a noticeable, yet slight, oil leak coming from it, and I needed to check the valves anyway, so I ordered nearly all the outer gaskets that I could change. Even a new oil pan as my previous one had a half stripped drain hole...courtesy of myself. Still waiting on those. Soon!

I even braved shortening my clutch cable via this video https://www.youtube.com/watch?v=axGTa0SvXjE&feature=player_embedded

Its just as solid as before but sits comfortably under my tank now.

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A far cry from it's original form, and looking so nice!


So now it waits, on parts mostly. I'm still waiting for some of those engine gaskets, I'm getting my exhaust sorted out tomorrow, should be pretty rad. Still have a tank mounting bracket to finish, and of course...jetting! Should have some more news soon. Thanks, Jeff
 
Jeff,
Looking good! I'm on board. When I switched out my throttle cable and clutch cable I used the S model cables. Much shorter and they tucked away nicely while still being "JUST" long enough not to bind when turning lock to lock.

Gary
 
Thanks! That's a really good idea.

The throttle cable is only just to long, not enough to justify cutting it up.

While I doubt it will happen, the pear cable end I got as a replacement is slightly smaller than the OEM one, I fear that something may slip out of place. Perhaps I'll order an extra S model as a 'just in case'.
 
Hi, nice project.
I started a project on a GSX400, are you selling your old gas tank?

Eran
 
I love the TX. Those spoked wheels are rare. I also love the "S" tank. You've managed to put the two together. Lucky break.

There is a TX in one of the local junk yards. The front was wrecked, but it still has the rear wheel, which I plan to pick up. One of these days, I hope to find the spoked front wheel for my "L."
 
Thanks, the guy I bought it from actually had a set of the cast wheels he sold with it. He rightfully kept the spoked wheels on the bike. There are quite a few GS450's in the yard by me, if I ever see one with a front spoke wheel I'll make a note for you.
 
Cool. One of these days, I would like to lace up a 21" front wheel on my little GS450 chopper. I have a GS850 front end I plan to put on it.
 
Alpha, just fyi: Suzuki used the same spoke hub for YEARS on a lot of bikes. Any GT front hub is identical to the GS450's front hub.
 
I suspected that. I have a GZ250 in my shop right now for paint. I am going to try the front wheel to see if it fits.

Suzuki used a lot of common parts between model. The stator in the GS450 was used in maybe a dozen or more different models for maybe 20 years or more. That's why I was able to get a higher capacity aftermarket stator for my old GS450.
 
Alright dudes, I think I'm about due for a little update.

Things move slower now that schools back, but I've been able to finish up smaller things on the bike. I finally got my new battery

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Shorai, the future of power, at a price...

The wiring is a lot neater than it looks, I've got everything to the proper length and tied up nicely, it just all congregates in that one very messy spot.


And my new Hagon's came in the mail today,

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They sit a little taller than my stock shocks. Right now I'm thinking that's probably because my stockers are right around 30 years old, I'm sure the new ride will be quite an improvement.

I had intended on leaving the fenders a brushed chrome finish but after some photo-shopping I went with black front and rear, it looks -way- better IMO. It just gives the bike a more finished look!

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I came across this bad boy at a garage sale, the guy seemed to think it was from the '60s, I don't know if its quite that old but it cleaned up nice. I don't think I'd every trust my brain to it, but it looks nice on a shelf.

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And last but not least, I was able to start the beast up after 2 months of sitting! What a wonderful feeling to hear it come back to life!

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It's open headers until I can ride it to my friends garage to weld on the muffler adapters. Loud, much too loud.

I tried to start it earlier this morning and found that I was getting no spark, what a bummer. After reading around and looking at the different ways to test the electronic components I found that it was simply a prong within one of the connectors had slipped too far in and needed a little pull out, problem solved! (What a relief!)

I noticed it idles fine until you hit the throttle then it seems to take off a bit and hang, much like its lean. Let the jetting joys begin. I started out with a 140 main per AlphaDog's advice on another thread and haven't touched the needle or pilot yet. Once I get everything else bolted back on and tucked away I should be able to sync the carbs again and have at it. I'm sure I'll be back to ask questions!

That's all for now!
 
While it was running I noticed that my Acewell's Tach wasn't functioning. When I wired it in I used the positive wire to the coil on the right side, I wired in the resistor that it came with just Pete did on his build. Nothing.

Should I remove the resistor and try again? Or have I wired it to the positive side in mistake? Other issues?
 
You can do it one of two ways, wrap it around the spark plug wire itself w/o splicing into anything or by splicing it into either the positive or negative. I took it to be positive on the diagram from Acewell which I think is correct...I'm sure Pete will swing by to have a word sometime.
 
check the bike's wiring - if I'm not mistaken, the positive wire is constant. The negative side is what's affected by the ignition.
 
Hey man,

When you switched from the old tank to the new, did you use the same gas cap or did you get a different one? I got a gs450s tank and I'm trying to figure out what exactly to do about the cap.
 
I got myself the round style cap. Suzuki used the same size cap for nearly all the gs models, I found one on eBay that didn't have a key for $20 shipped it was pretty easy to take apart and replace the tumblers with the ones from my original gas cap, uses the same key as the ignition and helmet lock.

Just don't buy the new ones that coke from thailand, they come with a key but there is no breather set up like the original gas cap, they seal it off and create a vacuum that cuts fuel flow.
 
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