1966 CB77 Restoration Project

G-Man · Post by **G-Man** » Sat Feb 17, 2018 1:54 am

Superb, I'd say. Quite a transformation. :-)

What did you use on the floats?

The solution I use cleans the brass parts but leaves them with a dark coating.

I have tried all sorts of stuff but I cannot get mine looking like yours.

The adhesive/sealer that Honda used is elusive. It seems resistant to almost anything. Would love to find some.

G

Seadog wrote:Thanks, G. I don't know if they're superb, but they'll do.

LOUD MOUSE · Post by **LOUD MOUSE** » Sat Feb 17, 2018 5:21 am

If both carb bodies show CL77 on the mount then you have 1 first issue CL77 and 1 last issue CL77 carb.
Not a true set. ..............lm

Seadog wrote:Cleaning parts today, but primarily carburetors. I scored a pair of badly corroded Keihin PW26s for the parts i needed. I found that the PW26s that came with the bike (but not mounted on the engine) have CL77 stamped on their flanges, but no matter, they'll get the correct jets.

I had to scrape the dried grease and dirt from them, then washed them in kerosene, then a night in a gallon can of carb cleaner, a day in a gallon can of lacquer thinner and now in an ultrasonic bath. They'll get a rinse and i'll blow them out with compressed air and check that the passages are clear. When the parts kits arrive, they'll be reassembled and set aside for later.

Seadog · Post by **Seadog** » Sat Feb 17, 2018 8:32 am

Thanks, G. For the floats, I used a product called "Twinkle Brass & Copper Cleaner". It's a soft paste. I dampen the float, then gently, gently rub a small amount of the paste on them, then keep rubbing with my thumb and forefinger until each stain has disappeared. Afterward, I wash them thoroughly in warm soapy water and an old toothbrush. I'd say that it takes 15 - 20 minutes per float.

https://www.amazon.com/Malco-Twinkle-Co ... B001FUQWEW

If you cannot get it in the UK, I can send you a tin.

G-Man wrote:

Superb, I'd say. Quite a transformation. :-)

What did you use on the floats?

The solution I use cleans the brass parts but leaves them with a dark coating.

I have tried all sorts of stuff but I cannot get mine looking like yours.

The adhesive/sealer that Honda used is elusive. It seems resistant to almost anything. Would love to find some.

G

Seadog · Post by **Seadog** » Sat Feb 17, 2018 8:54 am

Yes, they're both labeled CL77A. I know they're not true set and I know that a real purist would cringe at my using them, but I have nothing else. Carbs are hard to find and quite expensive and I can use the money elsewhere on this bike. If someone wants to trade, I'll give both cleaned carbs and the 2 spare carb bodies & bowls that I have for a good set of square bowl CB77 carbs. The spare carbs are just in ok shape - one has a lot of corrosion/pitting on the underside and both have corroded bowls. Pics on request.

LOUD MOUSE wrote:If both carb bodies show CL77 on the mount then you have 1 first issue CL77 and 1 last issue CL77 carb.
Not a true set. ..............lm

G-Man · Post by **G-Man** » Sat Feb 17, 2018 11:32 am

I'll look out for that - thanks!

G

Seadog wrote:Thanks, G. For the floats, I used a product called "Twinkle Brass & Copper Cleaner". It's a soft paste. I dampen the float, then gently, gently rub a small amount of the paste on them, then keep rubbing with my thumb and forefinger until each stain has disappeared. Afterward, I wash them thoroughly in warm soapy water and an old toothbrush. I'd say that it takes 15 - 20 minutes per float.

https://www.amazon.com/Malco-Twinkle-Co ... B001FUQWEW

If you cannot get it in the UK, I can send you a tin.

G-Man wrote:

Superb, I'd say. Quite a transformation. :-)

What did you use on the floats?

The solution I use cleans the brass parts but leaves them with a dark coating.

I have tried all sorts of stuff but I cannot get mine looking like yours.

The adhesive/sealer that Honda used is elusive. It seems resistant to almost anything. Would love to find some.

G

G-Man · Post by **G-Man** » Sat Feb 17, 2018 11:33 am

Pretty sure I have some spares. Will take a look tomorrow.

G

Seadog wrote:Yes, they're both labeled CL77A. I know they're not true set and I know that a real purist would cringe at my using them, but I have nothing else. Carbs are hard to find and quite expensive and I can use the money elsewhere on this bike. If someone wants to trade, I'll give both cleaned carbs and the 2 spare carb bodies & bowls that I have for a good set of square bowl CB77 carbs. The spare carbs are just in ok shape - one has a lot of corrosion/pitting on the underside and both have corroded bowls. Pics on request.

LOUD MOUSE wrote:If both carb bodies show CL77 on the mount then you have 1 first issue CL77 and 1 last issue CL77 carb.
Not a true set. ..............lm

Seadog · Post by **Seadog** » Sun Feb 25, 2018 4:14 pm

An update is in order. Thanks to Loud Mouse, the head, pistons/cylinders and transmission are all sorted out and ready for installation. I'll be calling the media blaster tomorrow to see about getting the crankcase cleaned up and then reassembly of the engine can begin. That should be fun. I've been working on other bits until then. Today, I was looking at the front wheel and saw that the front brake panel is rather chewed up around the axle hole. I can't imagine what could have caused that damage. Opinions, please, on whether I should replace it.