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86 Z50R, 69 Z50A, 71 Z50A, 82 Z50R
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Discussion Starter · #1 ·
I picked up a couple Z50A's at Barber this year and the 69 is in progress. It was running and riding but pretty rough. I've got the bike torn apart and I'm getting ready to put some paint on. I do resto's for a few clients but mostly bigger stuff- Ducati's, Bultacos, and my favorite bike- RZ350's. Feel free to chime in with tips and suggestions since this is the first Z50A I've done. Everything's been bead blasted and epoxy primer is on today...
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In one of your pics it looks like the left, rearmost, part of your frame might have been bent out of shape a bit. Then I couldn't see if you straightened it before primer..?

This is just a pic for reference.
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86 Z50R, 69 Z50A, 71 Z50A, 82 Z50R
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Discussion Starter · #3 ·
In one of your pics it looks like the left, rearmost, part of your frame might have been bent out of shape a bit. Then I couldn't see if you straightened it before primer..?

This is just a pic for reference.
View attachment 277008
Someone had welded a rigged TL bracket on the back and done a really bad job. Probably broke the original off at some point. I had to cut it off and straighten it all out and re-weld a section that was cracked. I think it is pretty good now. The rest of the frame is nice and straight. Might just be a angle from the picture that made it look bent.
The footpeg bracket is slightly bent on both sides but they are available new still. One of the handlebars is tweaked as well. All typical problems for these bikes that got used hard...
 

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Looks like you got a really nice early edition bike to start off with. A lot of hard to find parts are there. What you've done so far looks great too.
I spy some RZ parts in the background. Got one myself. Fun scary bike.
Keep posting up what you are doing, I'm watching. Rick
 

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86 Z50R, 69 Z50A, 71 Z50A, 82 Z50R
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Discussion Starter · #7 ·
Looks like you got a really nice early edition bike to start off with. A lot of hard to find parts are there. What you've done so far looks great too.
I spy some RZ parts in the background. Got one myself. Fun scary bike.
Keep posting up what you are doing, I'm watching. Rick
Yeah, I have 3 RZ's. Love them. My 84 KR is ported, milled head, 1mm over, 32mm Mikuni's. Pretty healthy and fun, lol.
 

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86 Z50R, 69 Z50A, 71 Z50A, 82 Z50R
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Discussion Starter · #8 ·
Motor is about ready to be reassembled. This was a really low time bike. Other than cosmetics, it really didn't need to be taken apart- it ran fine. Didn't even have all the black clutch goo in the cases. Everything looks like new inside. I soda blasted the cases and bead blasted/painted everything else.
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86 Z50R, 69 Z50A, 71 Z50A, 82 Z50R
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Discussion Starter · #9 ·
Getting ready to put the engine back together... Also, is this the correct petcock for a 69? I see other styles advertised as fitting the 69 but they look like the petcocks on my Z50R's.
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Discussion Starter · #13 ·
Working on the carb- which is in great condition but I found a split in the top of the float. I may try to solder it but are they available from Honda or aftermarket? Correct float height for this bike?
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They are easy to solder with a soldering iron and rosin core electrical solder. If you have not done it before, there is a small dot of solder on one of the sides of the float, right in the center, that should be removed before repairing. It's a vent hole, and can be filled once the repair is done, and the metal has cooled off. If you don't remove the dot, it will pucker on cooling.
 

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86 Z50R, 69 Z50A, 71 Z50A, 82 Z50R
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Discussion Starter · #15 ·
They are easy to solder with a soldering iron and rosin core electrical solder. If you have not done it before, there is a small dot of solder on one of the sides of the float, right in the center, that should be removed before repairing. It's a vent hole, and can be filled once the repair is done, and the metal has cooled off. If you don't remove the dot, it will pucker on cooling.
Yep, I was successful. Not pretty but it won't leak! Do you know the correct float height? measured from the gasket surface without the gasket?

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Yep, I was successful. Not pretty but it won't leak! Do you know the correct float height? measured from the gasket surface without the gasket?

View attachment 277105
18mm from the edge of the carb body to top of float. At that point the small tab should just be contacting the springy portion of the float valve if you were holding the carb upside down. Sometimes the hinge coming off the float gets bent in relationship to the float and has to be straightened out. If you have trouble getting the right height in relationship to that little tip correct, it may be because it’s bent.
 
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