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Author Topic: 1979 CB750L. My first cafe/brat project. Denver Area  (Read 13454 times)

Offline dwysywd

  • Posts: 95
Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #60 on: Feb 08, 2019, 10:56:27 »
your attention to details has been great. I really liked the article you published on the paint scheme. That was educational. I always wondered about that. Your epoxy frame paint looks great too.

Offline pidjones

  • Posts: 1024
Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #61 on: Feb 08, 2019, 17:18:46 »
It was cool (lower 60's) when I did the 2K rattle can clear on my GL1000. Warmed the can in hot water and applied according to instructions. Was afraid it had screwed up royaly because it was milky with runs and looked awful. Maritime and others couseled that as it cured the milky would go away - and it did. They also counseled that the runs and sags would wet sand out and polush up great - and they did.
"Love 'em all.... Let God sort 'em out!"

Offline cb250nproject

  • Posts: 509
  • If you can make it better do so
Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #62 on: Feb 10, 2019, 06:19:28 »
Very cool build, looking forward to see how it evolves


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline V10Pilot

  • Posts: 122
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Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #63 on: Mar 02, 2019, 13:46:41 »
Like usual I had part of a day to get a few things done but nothing major. I stripped and painted the swing arm, lower fork clamp, rear brake, and some other small parts. I also had to repair a stripped thread in the head. I went with a heli-coil system. Iím also about to dig into the electrical system for the motor then on to the rest of the M-unit blue.


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1979 Honda CB750L
2001 Kawasaki ZR-7S

Offline dwysywd

  • Posts: 95
Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #64 on: Mar 12, 2019, 14:54:25 »
Iím not using exact scientific number to prove the cooling or lack of cooling but if you put a layer of paint on a surface itís going to hinder it slightly. Even if it does it would be just a few degrees and that wouldnít matter on an old Honda motor. I just wanted to keep it bare because everyone seems to be painting their heads and I like my stuff to stand out.


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Actually, there was a guy on this forum (i think) that did a whole paint analysis, I believe he said he was a paint engineer. It was some time ago and I don't have the specific link, but painting the fins doesn't have any significant influence or insulation to the fins. To paint or not to paint is a vanity question not a physics question.

Btw, love the build. and I like what you did with the color scheme on the engine. I left my raw after cleaning it. I never repainted it. I hate the process, like others have said, PITA. So better that I didn't paint this one. I might build another bike after this one is over and paint that one, mainly its a complete tear down and rebuild of a non running engine. The vapor blasting looks amazing.

Offline Jimbonaut

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1979 CB750L. My first cafe/brat project. Denver Area
« Reply #65 on: Mar 12, 2019, 17:51:10 »
Shaping up very nicely fella.  Helicoils are the business.  I had to use one for a stripped cam chain tensioner thread - sweaty palm time but damn those things work great.  Watching your (and a few other 750 builds at the moment) is an education as I'm working on a smilier bike right now too.  Watching with interest!

Edit - Iím working on a similar bike. Itís in no way smilier.
« Last Edit: Mar 13, 2019, 08:55:37 by Jimbonaut »
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline V10Pilot

  • Posts: 122
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Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #66 on: Mar 13, 2019, 10:13:38 »
Actually, there was a guy on this forum (i think) that did a whole paint analysis, I believe he said he was a paint engineer. It was some time ago and I don't have the specific link, but painting the fins doesn't have any significant influence or insulation to the fins. To paint or not to paint is a vanity question not a physics question.

Btw, love the build. and I like what you did with the color scheme on the engine. I left my raw after cleaning it. I never repainted it. I hate the process, like others have said, PITA. So better that I didn't paint this one. I might build another bike after this one is over and paint that one, mainly its a complete tear down and rebuild of a non running engine. The vapor blasting looks amazing.
There was an article I put up somewhere in my post written by an aeronautical engineer on cooling performance that was pretty interesting. The chemical makeup of the paint plays the biggest role. Some paints result in a blanket effect while some actually dissipate infrared heat better than no paint at all.  But yeah Iíll agree with you that when it comes to an old Honda motorcyle, the effects are nil. A few degrees this way or that way arenít going to suddenly make a race engine or an underpowered turd. Itís about the look.

Thanks. The color came out great but Iím already wishing I hadnít used VHT. That stuff is garbage. I followed all the instructions for priming and painting and thoroughly prepped the metal before I sprayed the primer. It is not durable in the slightest and will chip easily. I dropped a small socket on the cam cover from no more than 2 feet and it left a chip about 5mm. The frame came out great and I couldnít be happier. I used a 2K rattle can epoxy primer and paint. I sprayed a test plate with the left overs and itís durable.

The vapor blasting is incredible. It micro peens the surface of the aluminum and closed the pores and gives a durable velvet look.


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1979 Honda CB750L
2001 Kawasaki ZR-7S

Offline V10Pilot

  • Posts: 122
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Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #67 on: Mar 13, 2019, 10:19:02 »
Shaping up very nicely fella.  Helicoils are the business.  I had to use one for a stripped cam chain tensioner thread - sweaty palm time but damn those things work great.  Watching your (and a few other 750 builds at the moment) is an education as I'm working on a smilier bike right now too.  Watching with interest!

Edit - Iím working on a similar bike. Itís in no way smilier.
I used your build as reference more than once so thanks for that. Yeah the Helicoils worked as advertised. Too bad the tap and install tool are priced like they are made of silver. I think Iíll strip a few more threads just to get my moneyís worth

Have you posted your new project yet?


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1979 Honda CB750L
2001 Kawasaki ZR-7S

Offline Maritime

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Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #68 on: Mar 13, 2019, 10:19:43 »
On the VHT, it's not durable until cured if it was the high heat engine paint. if you don't bake it or cycle the engine to cure it, it's pretty easy to damage it. after cured it's usually ok. That being said the 2K is 100X better paint.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
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Offline Jimbonaut

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Re: 1979 CB750L. My first cafe/brat project. Denver Area
« Reply #69 on: Mar 13, 2019, 10:28:27 »
Have you posted your new project yet?
Ha ha, yes.  It's in the Restorations section, which is a total joke as it as much a restoration project as I am Alicia Vikander's dream date.  You can find it under the title The Resto-not.
"I'm telling you Donnie, nuthin' but nuthin' but right"