1980 CB750K Cafe Project (hopefully)

[shinyribs]

Hey, that 14mm MC you got. Check this out. I dont know what size/ how many rear pistons you brake setup will have, but this can help make sense of the proper sizing. Might save you a few bucks and some downtime if you end up needing another size mc.

http://www.vintagebrake.com/mastercylinder.htm

[TOOLS1]

I use the green florists foam when I make seats. Never had a problem with the fiberglass resin melting it. However that is what they make "Bondo" for.
TOOLS

[Griffin]

Had to travel this week for work and I have a busy weekend so there's not much progress to report.  The last couple of weeks I've been slowly working on the seat pan and tank. The tank was covered in bondo to hide a few dents and the badge mounts. Thinking about having a professional redo it.

[Griffin]

Battery bracket done Made a bracket for the tail light and rear MC reservoir as well. Need the last bit welding and I'll be ready for paint.

[shinyribs]

You're moving right along  You'll be riding in no time. Keep it up!

[Griffin]

Thanks I sure hope so!

I got the last of the welding finished today.  The frame is about ready to be primed.

I decided to have the tank, seat, and maybe a few other parts (fender and headlight bucket) painted professionally.  I dropped the tank off today and need to do a little more work on the seat before it goes. I was going to paint it myself but since it's June already I need to pick up the pace. Beside I'm sure he'll do a better job much faster than I.

I'm ready to finish this thing up!

[Griffin]

Got a couple of coats of primer on the frame between yesterday and today.


Paint shop has the tank. I'm about ready to drop off the seat pan, headlight bucket, and front fender. I was on the fence about using a fender but I did a good job cutting it down. I think it will look good. Headlight bucket had some nicks and scratches. It's all fixed up an ready for paint now too.

Can't wait to see these parts all painted up nice.

[Jesper777]

Hi, i'm new here (was looking for some cb750 engine rebuilt info actually) and am workingon a simmilar project. A 1980 cb750 dohc caferacer build. I also had the advice NOT to put on open airpods, but I die iT anyway. I did change the head nozzles (believe thats the word in English) of the carbs and iT runs prettygood actually, even though I was planning on getting my bike on a testing bench, which I still might do when I am totallyfinished. Could you explainme how you got the engine out of the frame, the correct way???
God luck with the rest of your project, i'll stay tuned....

[Griffin]

I can't explain taking the engine out better than the shop manuel. This is the first time I had done it and that's how I figured it out. In short you put it on the center stand, remove the chain sprocket cover, sprocket, and chain. After the carbs, and airbox are out, you disconnect the odometer cable, generator plug, and anything else that's still connected. Then with a jack under the engine you can remove all motor mounts, nuts and bolts. From there I was able to lift it out the right side after a few tries. I had to remove the jack and tilt the engine pretty far to the left side the bottom would come over the frame. Now that I have it apart it looks like the bottom frame rail comes apart. Doing that would have been easier but I didn't notice and I don't think the manual said to do that. You can download the manual from the home page. There is a post with tech manuals I just look for the link that out year.

I would suggest two people lifting it out. I did it myself but I'm tall with long arms so was able to wrap my arms around it from above. I should have been gotten help though, I was just impatient.

Welcome to the forum, you'll find great advice here from some real experts. Best of luck to you!

On Jun 5, 2016 2:52 PM, "Jesper777 [via Honda CB750'S]" <[hidden email]> wrote:

Hi, i'm new here (was looking for some cb750 engine rebuilt info actually) and am workingon a simmilar project. A 1980 cb750 dohc caferacer build. I also had the advice NOT to put on open airpods, but I die iT anyway. I did change the head nozzles (believe thats the word in English) of the carbs and iT runs prettygood actually, even though I was planning on getting my bike on a testing bench, which I still might do when I am totallyfinished. Could you explainme how you got the engine out of the frame, the correct way???
God luck with the rest of your project, i'll stay tuned....

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060548.html

To unsubscribe from 1980 CB750K Cafe Project (hopefully), click here.
NAML

[TOOLS1]

I just put a floor jack under the engine, remove the section of frame rail, and roll the jack with the engine on it out the right side. The DOHC bikes are so easy to remove/replace the engines that I do these all by myself.
TOOLS

[Griffin]

I bet you can guess how mine is going back in!

On Jun 5, 2016 3:43 PM, "TOOLS1 [via Honda CB750'S]" <[hidden email]> wrote:

I just put a floor jack under the engine, remove the section of frame rail, and roll the jack with the engine on it out the right side. The DOHC bikes are so easy to remove/replace the engines that I do these all by myself.
TOOLS

Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060550.html

To unsubscribe from 1980 CB750K Cafe Project (hopefully), click here.
NAML

[Jesper777]

Thanks guys, that's Some usefull advice!

[Griffin]

Did a lot of prepping and priming this weekend. Sending all of the previously mentioned parts to the painter tomorrow. Although I may paint the headlight bracket myself. I put some rust treatment in the inside.  I may put rubber undercoating on it like I did with the fender.  

The seat is coming out nicely.

[Jesper777]

Lookin good!    Hey, i'm trying to add à photo using the "insert image" button, but iT doesn't work... Is there another way?

[Griffin]

Make sure you pick a size, it fails on me too if I don't pick a size. You could also reply through email and it will show as an attachment instead of being embedded.

On Jun 5, 2016 6:05 PM, "Jesper777 [via Honda CB750'S]" <[hidden email]> wrote:

Lookin good!    Hey, i'm trying to add à photo using the "insert image" button, but iT doesn't work... Is there another way?

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060554.html

To unsubscribe from 1980 CB750K Cafe Project (hopefully), click here.
NAML

[Jesper777]

[Jesper777]

I don't know why iT did work this time.... Maybe because i used à lower quality photo. Anyway, i hope you can see the power filters! I think iT looks so much  better then the original. And like i said,it runs quite good even though i onlychanged the nozzles.

[Griffin]

Looks great, love the pin stripe connecting it all together.

I've heard you can get most of the way there with pods by swapping out the jets. Glad it's running well for you, nicely done.

There are two dual carb setups on the market for our bike. I'm probably going with one of those and ditching the old CVs myself.

On Jun 5, 2016 7:24 PM, "Jesper777 [via Honda CB750'S]" <[hidden email]> wrote:

I don't know why iT did work this time.... Maybe because i used à lower quality photo. Anyway, i hope you can see the power filters! I think iT looks so much  better then the original. And like i said,it runs quite good even though i onlychanged the nozzles.

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060558.html

To unsubscribe from 1980 CB750K Cafe Project (hopefully), click here.
NAML

[Jesper777]

Thanks, I like the pinstripe too ;-) but not only for the reason u
mentioned, but because this way, the "strange" shape of the bottom end
of the gastank (I rather wanted a 1978 bike for that matter) doesn't
show since under the pinstripe it blends in with the frame.
Oh and you're probably right that the word is jet instead of nozzle.
PLease let me know how your setup will perform...
I am going to take apart my engine this week or next, so I might have
to ask some stuff later on ;-)
Good luck on the project!

Griffin [via Honda CB750'S] schreef op 2016-06-06 01:39:

> Looks great, love the pin stripe connecting it all together.
>
> Ive heard you can get most of the way there with pods by swapping out
> the jets. Glad its running well for you, nicely done.
>
> There are two dual carb setups on the market for our bike. Im
> probably
> going with one of those and ditching the old CVs myself.
> On Jun 5, 2016 7:24 PM, "Jesper777 [via Honda CB750S]" <[hidden
> email]
> [3]> wrote:
>
>> I dont know why iT did work this time.... Maybe because i used à
>> lower quality photo. Anyway, i hope you can see the power filters! I
>> think iT looks so much  better then the original. And like i
>> said,it runs quite good even though i onlychanged the nozzles.
>>
>> -------------------------
>>
>> If you reply to this email, your message will be added to the
>> discussion below:
>>
>
> http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060558.html
>> [1]
>> To unsubscribe from 1980 CB750K Cafe Project (hopefully), click
>> here.
>> NAML [2]
>
>  Dave Arnold
> Xclusive Sites - Web Development - xclusivesites.com
> ISSA Certified Personal Trainer - onlineptconnect.com/xclusivesites/
> Instagram @phparray
>
> -------------------------
>
> If you reply to this email, your message will be added to the
> discussion below:
>
> http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060559.html
> [4]
>  To unsubscribe from 1980 CB750K Cafe Project (hopefully), click here
> [5].
>  NAML [6]
>
> Links:
> ------
> [1]
>
> http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060558.html
> [2]
>
> http://honda-cb750-s.456789.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&amp;id=instant_html%21nabble%3Aemail.naml&amp;base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&amp;breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml
> [3]
> http://mail.youthunited.nl/user/SendEmail.jtp?type=node&node=4060559&i=0
> [4]
>
> http://honda-cb750-s.456789.n3.nabble.com/1980-CB750K-Cafe-Project-hopefully-tp4059573p4060559.html
> [5]
>
> [6]
>
> http://honda-cb750-s.456789.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&amp;id=instant_html%21nabble%3Aemail.naml&amp;base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&amp;breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml

[Griffin]

First coat if paint is on the frame and headlight bracket also painted the top triple tree clamp.

It's hard to see how good it looks in pictures. I took some close ups so you could see better. That rear loop looks seamless.