1971 CB750 K1 Rider Resto (On the road again!)

Re: 1971 CB750 K1 Rider Resto

NICE! Congrats, gets wheels on her and make her a roller. Heard about the stud from Skip last night, too bad. I always tell myself there are NO shortcuts and if I get impatient it is time to walk away.
 
Re: 1971 CB750 K1 Rider Resto

66replica said:
Nice work. Signing up for updates.
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Thanks, It certainly has turned out to be more than I was planning on. So much for a quick easy project. :)

swan said:
NICE! Congrats, gets wheels on her and make her a roller. Heard about the stud from Skip last night, too bad. I always tell myself there are NO shortcuts and if I get impatient it is time to walk away.
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Hey Jon, there was no way that bolt would have ever come out without drilling it out. I am happy that the helicoil worked out so well.
 
Re: 1971 CB750 K1 Rider Resto

Ed, I meant you should have removed the cylinder studs before putting the lump back in the frame. Not doing it was the shortcut. Regardless it looks great and I cannot wait to see it in person.
 
Re: 1971 CB750 K1 Rider Resto

swan said:
Ed, I meant you should have removed the cylinder studs before putting the lump back in the frame. Not doing it was the shortcut. Regardless it looks great and I cannot wait to see it in person.
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swan said:
Ed, I meant you should have removed the cylinder studs before putting the lump back in the frame. Not doing it was the shortcut. Regardless it looks great and I cannot wait to see it in person.
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Yes, I should have thought to remove the exhaust flange/spiggots before I even put the engine back together. At least the engine was still out of the frame and on the stand when I had to drill/remove the stud so I had plenty of room to work. Ideally, If I had done it before top end assembly, I could have just taken the head up to Skip to have him have a go at it. These early 750's have flat recessed phillips head studs for the exhaust so the impact screwdriver was the only way I could figure to get them loose.
 
Re: 1971 CB750 K1 Rider Resto

For you, Swan. Although temporary.

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Re: 1971 CB750 K1 Rider Resto

WOW, looking beautiful!
 
Re: 1971 CB750 K1 Rider Resto

this just makes me wanna start on my K3 resto!
Lookin good
 
Re: 1971 CB750 K1 Rider Resto

It has been a long while since I posted anything to this thread. Mostly, because I have had very little progress. I have done a few small things, but work has really been getting in the way. I started stripping the headlight ears, but I decided that I would order the repros from DSS. They are on the way, and I am anxious to see what the quality is.

I managed to strip the tank over the last week. What a job for such a small piece of metal. When I purchased the bike, it was black. Sometime after I bought the bike, I painted it blue. Well, it turns out that there were a couple more paint jobs under the top two layers. I finally got down to bare metal after numerous applications of stripper, sanding, and soda blasting.

I am thinking that this tank is not original to the bike. On the underside of the tank, below the Candy Red (which I think is the original color of the bike) is a kind of a Teal Blue color. This is not a 1971 color as far as I know. I will attach some photos with the color. Also, is there a paint code on the data plates for these bikes? I would like to know for sure what the original color was.

Blue and black layers off. Candy Red is next. Also showing some bondo repair.

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Scraping off the candy red, I was surprised to find a layer of blue underneath it. Anyone know what color this might be?

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Done stripping and found some nasty dents. Otherwise, the tank is pretty clean inside and out. I am hoping to find a paintless dent repair place tomorrow to see if they can push out the big dent and the dent under the emblem. Has anyone had any luck with paintless dent repair for their tanks?

20131103_164309_zps691b3c46.jpg
 
1971 CB750 K1 Rider Resto

No comment for the dent repair.
I would like to share a photo of the 5 pages of pure inspiration that has kept me up much longer than planned.
6e9e2y9u.jpg


I appreciate your attention to detail and making me reevaluate my 75' 550k restoration project. I'll be keeping an eye on yours till she is returned to her former glory!
 
Re: 1971 CB750 K1 Rider Resto

Drey6 said:
No comment for the dent repair.
I would like to share a photo of the 5 pages of pure inspiration that has kept me up much longer than planned.
6e9e2y9u.jpg


I appreciate your attention to detail and making me reevaluate my 75' 550k restoration project. I'll be keeping an eye on yours till she is returned to her former glory!
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I can't see the picture. What is it of, Drey?

And thanks....encouragement is always welcome!
 
1971 CB750 K1 Rider Resto

Ah now worries, it's a screen shot of my phone showing all the pages I read.
 
Re: 1971 CB750 K1 Rider Resto

Drey6 said:
Ah now worries, it's a screen shot of my phone showing all the pages I read.
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Ha, OK. The dreaded internet time suck. Been there, done that :)
 
1971 CB750 K1 Rider Resto

I don't dread it anymore, I welcome it! :)

Questions:
Was a paint stripper necessary on the engine at any point prior to painting?
If so, what did you use?
What paint did you use? How many coats (etc), and did you bake the parts after?
 
Re: 1971 CB750 K1 Rider Resto

Drey6 said:
I don't dread it anymore, I welcome it! :)

Questions:
Was a paint stripper necessary on the engine at any point prior to painting?
If so, what did you use?
What paint did you use? How many coats (etc), and did you bake the parts after?
Click to expand...

I did not use stripper, but I have a small soda blaster that works wonders for cleaning up the cases. With the soda blaster there is no worries about glass beads getting trapped in any oil passages of the engine, and it is great for removing stubborn bits on gasket and varnish. I think I may have started by degreasing with engine cleaner, then soda blast, Wash with soap and water, degrease again with acetone or lacquer thinner, and painted with Duplicolor ceramic high temp engine enamel (1615 Aluminum matches the factory paint very well). I did not prime. I did run them through several heat cycles in the oven. I think I will get some 2K paint mixed up next time and spray with my gun. The reason for this is that I am not sold on the durability of the Duplicolor, even with the baking cycles. It does look great though. Time will tell on the durability.

When I was assembling my cases, I had to take them apart and redo the assembly process. I cleaned the mating surface with lacquer thinner to remove the Hondabond on the mating surface. A small amount of the Thinner dripped on to the painted surface and basically washed the paint off. Hopefully, Gas will not do the same thing. I do know that carb cleaner will not get close to my engine :)
 
Re: 1971 CB750 K1 Rider Resto

What have you got for a portable tank? How long does it last? Type of gas? Just an idea but you could also bring the painted parts to an auto body shop and ask them to clear them when they have a clear oat job they're doing. Nice job so far. :)
 
Re: 1971 CB750 K1 Rider Resto

Luck said:
What have you got for a portable tank? How long does it last? Type of gas? Just an idea but you could also bring the painted parts to an auto body shop and ask them to clear them when they have a clear oat job they're doing. Nice job so far. :)
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Luck, I am not sure what you mean about a portable tank. I will paint everything myself, weather permitting....a pitty my wife does not allow painting in the house :)
 
Re: 1971 CB750 K1 Rider Resto

Sorry, My friends use tanks like scuba tanks filled with compressed air in order to do mobile airbrushing. It works great for things that don't require much air. I thought that's what the blue tank was. Probably wouldn't work for to long if you were using it for soda blasting. lol Is the tank filled with soda? Pressurize it and it becomes a soda blaster? Looks like a great system. Im too cheap and Im still using a plastic hose and an air nozzle. lol
 
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