Author Topic: Marissa's 1972 CB500  (Read 92944 times)

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Offline mscuiletti

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Re: Marissa's 1972 CB500
« Reply #150 on: February 06, 2018, 05:48:24 AM »
Marissa's FiST is stanced... :P Keep up the good work!

Offline PeWe

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Re: Marissa's 1972 CB500
« Reply #151 on: February 06, 2018, 09:25:14 AM »
Aha! Interesting tuning stuff!
I was thinking about an APR kit or similar to my Audi A4 Q Avant 1.8T (B6) 7 years ago. I stayed with std KKK3s turbo, better software, Evolution Racewerks  TIP (alu inlet pipe between air filter and turbo) since std plastic is crap causing boost surge. Milltek sport cat and complete exhaust for earlier spool-up
There  are turbos that look std but improved inside. Need bigger injectors, massive flywheel and sport clutch. An RS4/RS6 might be easier.

https://www.audiforums.com/forum/b5-models-69/1-8t-turbo-upgrade-information-93439/#&gid=1&pid=1
« Last Edit: February 06, 2018, 09:38:57 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline 754

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Re: Marissa's 1972 CB500
« Reply #152 on: February 06, 2018, 09:32:06 AM »
 Marissa sounds like a cool job.. with lots of support for what you are doing bikewise.

 I bet the shop guys think it's cool you are lapping valves and honing bores..
 Keep it up, good luck.
Maker of the WELDLESS 750 Frame Kit
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Lost quite a few CB 750's along the way

Offline Marissa

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Re: Marissa's 1972 CB500
« Reply #153 on: February 06, 2018, 11:14:28 AM »

Haha Marc, definitely have the FiST cambered out...  :P

Aha! Interesting tuning stuff!
I was thinking about an APR kit or similar to my Audi A4 Q Avant 1.8T (B6) 7 years ago. I stayed with std KKK3s turbo, better software, Evolution Racewerks  TIP (alu inlet pipe between air filter and turbo) since std plastic is crap causing boost surge. Milltek sport cat and complete exhaust for earlier spool-up
There  are turbos that look std but improved inside. Need bigger injectors, massive flywheel and sport clutch. An RS4/RS6 might be easier.

https://www.audiforums.com/forum/b5-models-69/1-8t-turbo-upgrade-information-93439/#&gid=1&pid=1

Love those Avants! We have many customers that go K04 matched with APR software. We are the largest distributor for APR on the Northeast as well. We do Milltek systems from time to time but AWE is our bread and butter. A bit more expensive but really high quality stuff. We notice that for our daily driving customers, the AWE systems hold up longer with the salt than the milltek systems do.  Personally, I'm upset that AWE has decided to launch systems for Focus RS/ST, but not Fiesta ST. Milltek offers systems for FiST :) Nonetheless I can't afford an exhaust system anyways, but if I could it would be between Milltek, Cobb, and Mountune.

Sometimes on the side I help with software installation and reflashing. Sometimes it requires removing the circuit board and manually passing the encryption:



But to go back to your point 754, they're pretty indifferent on this stuff. None of them are into motorcycles, or classics really for that matter. It breaks my heart because I grew up loving classics, haha.
1984 Nissan 300zx - sold
2016 Ford Fiesta ST - daily
1972 Honda CB500 - infinite work in progress

Instagram- marissasimos

Offline Lostboy Steve

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Re: Marissa's 1972 CB500
« Reply #154 on: February 06, 2018, 11:50:06 AM »
I've done quite a few of those 2.7 biturbo turbos. Not fun. Still less squirmish about that than pulling my 550 case apart. For what that's worth. You have nerves of steel.

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Offline PeWe

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Re: Marissa's 1972 CB500
« Reply #155 on: February 06, 2018, 12:48:37 PM »
Mechanical interest, improving the functionality or just turn the vehicles clock back in time. Very addictive hobby. A bike easier to work with, a car need a lift. You have a lot of good tuning parts and priceworthy alternatives in USA.
Honda CB's very fun and easy to work with thanks to this forum and all information written here with helpful members! Tuning parts back in production. CB750 get more and more parts reproduced. Maybe same with CB500/550?
« Last Edit: February 06, 2018, 01:17:00 PM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline edintheclods

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Re: Marissa's 1972 CB500
« Reply #156 on: February 09, 2018, 06:12:09 AM »
Those disco bars are the most disco thing I've seen.

Hi Marissa! My GF inherited a '71 from her Dad and I'm working on it for her. It's been sitting for about 30 years and I'm looking to go in the same direction as you. Eileen is also short, and this will be her first shifter bike, a step up from her Vino125 scooter. Not sure about chopping the tail yet, she might want to keep the original seat since it's in surprisingly good condition. It's good to have those little grab bars for a tie down point so she can take an overnight bag or camping stuff. I all about function over style.
« Last Edit: February 09, 2018, 06:27:33 AM by edintheclods »

Offline edintheclods

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Re: Marissa's 1972 CB500
« Reply #157 on: February 09, 2018, 07:22:36 AM »
I bent the valves on my GS500E when I rebuilt the top end. I think I had the cam rotated 180 degrees and cranked the engine over. All bad. I'll be more careful with this one.  :P

Offline Marissa

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Re: Marissa's 1972 CB500
« Reply #158 on: February 09, 2018, 07:08:06 PM »
Those disco bars are the most disco thing I've seen.

Hi Marissa! My GF inherited a '71 from her Dad and I'm working on it for her. It's been sitting for about 30 years and I'm looking to go in the same direction as you. Eileen is also short, and this will be her first shifter bike, a step up from her Vino125 scooter. Not sure about chopping the tail yet, she might want to keep the original seat since it's in surprisingly good condition. It's good to have those little grab bars for a tie down point so she can take an overnight bag or camping stuff. I all about function over style.

Hi! That’s awesome. Is that bike candy garnet brown as well? It looks like the side covers are off, not sure if you plan on running the bike that way, but it helped me immensely with touching both feet on the ground. You can always have the seat foam shaved about an inch or so to help. If that doesn’t help, you can get shorter shocks to really bring it down, but you can’t alter it too much without modifying the suspension geometry.

Best of luck!
1984 Nissan 300zx - sold
2016 Ford Fiesta ST - daily
1972 Honda CB500 - infinite work in progress

Instagram- marissasimos

Offline HondaMan

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Re: Marissa's 1972 CB500
« Reply #159 on: February 09, 2018, 08:47:16 PM »
Going back to the tranny bearing pictures for a minute...
I see lots of the 500/550 cases that look like that. They were not a tightly controlled in production as the 750 cases, for sure. The 350F was better than the 400F i this regard, too. But, neither seemed to have suffered for it?

The heat-stained cranks are also a common thing in these bikes. I think 754 has it right: they probably got the weights hot when hardening the primary gear.

And, the chewed-up cases from the loose Hy-Vo style primary chains is so common in the 500/550 that I just expect it. A real bad one will have broken off a piece of the case, and this sometimes ends up getting stuck in a tranny gear at some point.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
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Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

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Offline Marissa

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Re: Marissa's 1972 CB500
« Reply #160 on: February 12, 2018, 01:56:53 PM »
Going back to the tranny bearing pictures for a minute...
I see lots of the 500/550 cases that look like that. They were not a tightly controlled in production as the 750 cases, for sure. The 350F was better than the 400F i this regard, too. But, neither seemed to have suffered for it?

The heat-stained cranks are also a common thing in these bikes. I think 754 has it right: they probably got the weights hot when hardening the primary gear.

And, the chewed-up cases from the loose Hy-Vo style primary chains is so common in the 500/550 that I just expect it. A real bad one will have broken off a piece of the case, and this sometimes ends up getting stuck in a tranny gear at some point.

Thanks for the feedback HondaMan, I haven't seen this discussed with a lot of people, OR documented well enough for me to just let it slide. Glad to hear some feedback and that it isn't uncommon or that big of an issue regarding the tranny bearings in the case. I'm just gonna keep moving forward with everything.

Since I've been waiting on funds to recover and for powder coating quotes, I started to disassemble the rear end to help with progress.





To remove the rear hub retainer, I drilled out the stakes, tried numerous different ways of breaking it free with no luck, until I tried a punch with a 1lb dead blow hammer. I also excessively sprayed wd40 and PB blaster in the threaded area to help spin it free, and hopefully prevent any damage to the threads in case I didn't drill through the stakes all the way.

Luckily, it looks like the threads were hardly damaged, and my retainer had an arrow engraved into it pointing to the left. I found a thread that indicated this is the direction you spin it in to tighten, not to loosen, so I found out it was reverse threaded early on. It seems like some people think there is a discrepancy with some of the retainers for the 500/550s?



I don't know if it's visible in any of the pictures, but there were actually already flat spots visible in the hub bearings with how the plastic cover was seated. It was actually indented in some areas. Anyways, this was actually almost impossible for me to remove using the (18mm I believe?) trick I found online. I think this was the case because I still had the hub attached to the wheel and tire, and the impact of the socket seemed to reverberate through the wheel instead of being absorbed by the bearing assembly. I heated the hub on both sides multiple times, lubricated them to no end, for about 2 hours or so with no luck. It started to mushroom out the top of the assembly, so I decided to try using a punch instead, and on the second try everything slid out beautifully. So if anyone out there is about to disassemble the rear hub, I would definitely give the punch a try.

Debeading the tire was easy, getting one side of the tire off: also easy. Getting the tire off entirely? I couldn't figure out a way to do it without a proper tire iron and something to hold the wheel locked in place. So I ended up just cutting through it to get it done. A little annoyed with myself because I've mounted and balanced tires dozens of times on cars, figured I would be able to do this, but at the same time I had absolutely no proper equipment for that in my garage. I've been told for mounting tires, you can try getting heavy duty industrial zip ties to hold the tire and tube in place, not sure how much that will work though. But regardless, I think the insides are a little too rusty for my liking. I really want to get a set of Excel Aluminum wheels considering they aren't that much more than new D.I.D chrome wheels. I really want to get some Avon Roadriders as well, I think it would be a perfect combo for nice handling, stability, and looks. That will probably be one of the last things I buy though.



Started to disassemble the swing arm, I have some bronze bushings on the way.



...And ended up tearing the rest of the frame apart and removing the engine. I wanted to make more space and move the old engine out of the way of everything else! Next thing I know I realized it was only a couple more steps to remove the wiring harness, and then only a couple more steps to remove the triple tree and front end...



So this is my life now, haha. I have to clean up the frame a little bit more to prepare for a new electronics tray and to trim the center stand clip things. I do want to get this powder coated, and I want to ask here first before I ask anyone else; has anyone here had their frames powder coated over filler? I used filler to smooth out some of the lines in the back, and if I get this frame coated, the rest of the original paint will need to be stripped/blasted. Should I just get the frame blasted now and start filling it back again, or should I just use paint remover on the rest of the frame, have them clean it before coating, and then see what happens? I know typically most people do powdercoat over small amounts of filler (none is more than 1/5" thick) but as reassurance I'd love to hear your opinions on this.
1984 Nissan 300zx - sold
2016 Ford Fiesta ST - daily
1972 Honda CB500 - infinite work in progress

Instagram- marissasimos

Offline calj737

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Re: Marissa's 1972 CB500
« Reply #161 on: February 12, 2018, 02:01:33 PM »
My understanding from my powdercoater is there is a specific type of filler used beneath PC that is very heat resistant. But if you are going to have your frame blasted the coated, you’ll likely need to replace the filler anyway.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline DaveBarbier

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Re: Marissa's 1972 CB500
« Reply #162 on: February 15, 2018, 04:29:58 AM »
Looking good Marissa. I’ve never used the impact trick, I always use heat and a punch. Never fails.

If you’re going to be removing and installing tires, go and get three tire irons. I normally go to the shop near me to have them do it though.

Offline Marissa

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Re: Marissa's 1972 CB500
« Reply #163 on: February 21, 2018, 06:37:19 PM »
Thanks for the tips Cal and Dave!

To start... Does anyone know where these go before I start scavenging through the manual in hopes to find an accurate drawing depicting them? These must have came off my cases when I was splitting them, I put the empty cases on their blankets and when I turned around these were staring back at me on the table.



Second, I ordered some parts from David Silver Spares, including an OEM primary chain, which came in the mail like this:






I sent an email over to them over the long weekend, and began trying to clean it under the assumption they were going to say that's the condition of their NOS items. Luckily, they sent me an email back yesterday that they will send me a new one, so I have to mail this one back. I got it cleaned up alright, but there was still a lot of rust on the inside that I wasn't able to get. I'm happy that they're taking this back because I'm going to have everything as clean as a whistle for install because I really don't want to cut corners.

(a photo of how far I got with it in case you're curious, (I used parts cleaner and a brass bristle brush, followed by WD40 and more scrubbing!)

You can see it's still pretty grimy. Here's a comparison of that with the old chain and all it's slack:


I finally got to drop off the cases today at the powdercoater (Yay!) but as soon as I put them in his hands I realized I didn't pull the last bit of the seized head stud yet and I'm quite upset I managed to rush and forget about that. Nonetheless I can always remove it after but I'll have to be extra mindful of the finish. The color it's getting is Bengal Silver I believe (I know it's Tiger Coating) which is pretty darn close to VHT Flat Aluminum, but with a tad more flake. It's what he had in stock and the difference is hardly noticeable so I'm excited to see the turnout.

That said, I brought up the question of having him blast the frame, me using the high temp filler, and then getting it coated, and he doesn't seem too keen on that, so honestly I might just paint the frame myself and avoid that if possible. It's not 100% what I wanted to do, but it will be more cost friendly and I don't mind trying it for a season. If for some reason I get excessive chips I can always start from the bottom again and get it powder coated another year.

I moved onto the swing arm to remove the bushings and get it disassembled for powder coat as well (Originally wanted to drop it off with the frame) and the bushing removal wasn't too bad, but it was time consuming. I used a punch alone with a torch and PB blaster to break the first one free, but after a while I had to add a socket to it or else the punch would hit the swing arm. I can't tell if I broke it or if this bike had a split bushing?





These shock bushings though are killing me... I put these through like 5 soaks of PB Blaster, I heated these things up to no end, I tried using sockets and a vise, I tried punching them out, I tried the hammer and socket, these things didn't do anything but fall apart with the rubber centers. Even after I removed those and cleaned it off these things are stuck and I'm not sure what other method to try now. Please save me from this mess, haha.



Next on the list is likely polishing up the rear hub, cleaning, rebuilding it, I have the parts and now that I'll be waiting roughly two weeks for the cases to come back I figure that's the next best thing to work on.
1984 Nissan 300zx - sold
2016 Ford Fiesta ST - daily
1972 Honda CB500 - infinite work in progress

Instagram- marissasimos

Offline DurangoCB

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Re: Marissa's 1972 CB500
« Reply #164 on: February 21, 2018, 06:57:58 PM »
Best thread going right now on these forums, if you ask me.  Love following along.
1971 CB500 Four- current project http://forums.sohc4.net/index.php/topic,170622.0.html
1978 CX500- next in line

Offline HondaMan

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Re: Marissa's 1972 CB500
« Reply #165 on: February 21, 2018, 07:36:08 PM »
When I get those rusted-in shock bushing "shells" like that, I put a little grinder wheel into my Dremel and grind a thin spot all the way across the inside face. Then I can pry up an edge with a punch a little to fold the metal ring, so it loses its death-grip on the hole...
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline DaveBarbier

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Marissa's 1972 CB500
« Reply #166 on: February 22, 2018, 05:56:18 AM »
That primary chain cleaned up better than I thought. Good thing they’re sending you another one, but I bet if you soaked it in a rust remover it would be useable. That’s worst case scenario though.

My initial thought for those rings are thrust washers and spacer for the clutch. I can’t think of any other place they would be.

A benefit of painting over powder coating the frame is that it’ll be easier to repaint scratches and chips if that ever happens.

For the shock bushings, try what Mark suggests but a different take is taking a small hacksaw and splitting the metal ring to help release it’s grip. Same principal.

Offline HondaMan

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Re: Marissa's 1972 CB500
« Reply #167 on: February 22, 2018, 09:54:30 AM »
The original swingarm bushings were phenolic, with a felt seal ring and separate phenolic outer "bush" (as Honda calls it) to bear on the frame. The replacement bushings that appeared in the 1990s were the ones you have now, and they EAT the swingarm collars alive. They are also the Devil's next kin to remove, as you have found: they are a cooked MIMs-metal part.

Whatever you do for new bushings: there must be 0.0004"-0.0010" of collar sticking out of the arm (sum both sides) to butt into the frame. Torquing the long bolt reduces this close to zero, and this action cross-stresses the center section of the frame against the rear of the engine to provide the torsional stiffness needed directly in the middle of the bike. When you torque the long bolt to about 25 ft-lbs, this shortens the collar about 0.0004", at 40 ft-lbs it shortens about 0.0007", hence the tolerances. Also: the clearance between the collar and bushing's ID must be not more than 0.0012" or the rear wheel will be able to move side-to-side after greasing. I usually set them up tighter, more like 0.0004"-0.0008".
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline zeffcat

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Re: Marissa's 1972 CB500
« Reply #168 on: February 22, 2018, 01:51:09 PM »
I really want to get a set of Excel Aluminum wheels considering they aren't that much more than new D.I.D chrome wheels. I really want to get some Avon Roadriders as well, I think it would be a perfect combo for nice handling, stability, and looks. That will probably be one of the last things I buy though.



My rims looked a bit worse than this and I had them blasted and powdercoated black along with my frame and they turned out wonderful! Just an option if you want to save a few hundred on new wheels.
CB750 K8

Offline SOHC4 Cafe Racer Fan

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Re: Marissa's 1972 CB500
« Reply #169 on: February 22, 2018, 02:33:22 PM »
Excel shouldered, polished rims on my beater 750:

imagejpg2_zps47fc9778 by Donald Leonhardt, on Flickr

imagejpg10_zpsa46185b1 by Donald Leonhardt, on Flickr

imagejpg2_zps88e20f74 by Donald Leonhardt, on Flickr

Very easy to keep clean, too.

I ended up swaping out the Spitfires for BT-45s -- much better grip. The grip on the BT45s is as good as the RoadRiders, but the Roadriders did not like the grooved concrete freeway pavement and would sometimes wobble.

001_zps0ke3gb5v by Donald Leonhardt, on Flickr
« Last Edit: February 22, 2018, 02:37:51 PM by SOHC4 Cafe Racer Fan »
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Marissa

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Re: Marissa's 1972 CB500
« Reply #170 on: February 22, 2018, 04:20:37 PM »
Excel shouldered, polished rims on my beater 750:

imagejpg2_zps47fc9778 by Donald Leonhardt, on Flickr

imagejpg10_zpsa46185b1 by Donald Leonhardt, on Flickr

imagejpg2_zps88e20f74 by Donald Leonhardt, on Flickr

Very easy to keep clean, too.

I ended up swaping out the Spitfires for BT-45s -- much better grip. The grip on the BT45s is as good as the RoadRiders, but the Roadriders did not like the grooved concrete freeway pavement and would sometimes wobble.

001_zps0ke3gb5v by Donald Leonhardt, on Flickr



My rims looked a bit worse than this and I had them blasted and powdercoated black along with my frame and they turned out wonderful! Just an option if you want to save a few hundred on new wheels.


Argggghh. I love love love the Excels. But honestly it's a solid idea to run the current wheels and just clean them up. I think we're forgetting that I'll still be a new rider when this is all said and done, and I need to cut costs for stuff like aesthetics, especially if I accidentally curb it or do something silly. Ugh, the struggle! I really want this bike to look like a piece of art when I'm done, but I have to step back and realize I'm on limited budget and experience for now. Once I get my feet wet and a full season in then maybe I can justify doing more aesthetic and performance modifications.
1984 Nissan 300zx - sold
2016 Ford Fiesta ST - daily
1972 Honda CB500 - infinite work in progress

Instagram- marissasimos

Offline SOHC4 Cafe Racer Fan

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Re: Marissa's 1972 CB500
« Reply #171 on: February 22, 2018, 04:30:14 PM »
Fair enough.  You will probably spend quite a bit less than $500 in new, shiny, polished aluminum Excel rims by just blasting and powdercoating your existing steel rims. 

If you rims are that rusty, however,  I would replace them.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline MauiK3

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Re: Marissa's 1972 CB500
« Reply #172 on: February 22, 2018, 07:27:26 PM »
Marissa
If you reuse the steel rims I would suggest at least a new set of stainless spokes from Buchanan. Don't want to rely on corroded spokes.
Looks like a great project.
On my K3 I had the frame media blasted and I painted it with POR 15 with a top coat of their chassis black. POR15 is near bullet proof and easily touched up in the event of a nick.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline HondaMan

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Re: Marissa's 1972 CB500
« Reply #173 on: February 22, 2018, 08:41:28 PM »
You all make me feel bad: my 750's rims look a LOT worse than Marissa's! The last time I installed a new rear Avon (2009) I had to CHIP away the rust on one side of the rim because the bead would not straighten out...I ended up using a doublewide rim band, covered with duct tape, just in case the chrome slivered off during install and might try to eat my tube...It still came out round, though!

I'm about to journey into my front wheel for a new Avon there, too. Hope it's better?
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Offline DaveBarbier

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Re: Marissa's 1972 CB500
« Reply #174 on: February 23, 2018, 04:43:01 AM »
My wheels are about as rusty as Marissa’s. I used them for a while but recently replaced the front with a new OEM rim and stainless spokes. The rear is rusty and I just hit it with a wire brush on an angle grinder and painted it. Aluminum rims were out of the question, the OEM rim I got for $90.