Honda CB750 Sandcast

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Messages - Blake Withrow

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1
The Beginning / Re: Metal Cleaning Question
« on: February 25, 2010, 11:43:55 am »
I'm going to throw out a suggestion for comment. Soda blasting using a siphon style gun seems like it might be good for this application. Soda is the softest of all blasting media, it's basically inert, and washes off with water. Obviously you wouldn't want to use heavy pressure, but from what I've seen on other forums it should work really well and not damage the plating. I haven't tried this particular application, but I might give it a shot just to see.

Congratulations on the new sandcast!

2
Chrome - Anodizing and Other Metal Finish Procedures / Re: Question about plating un-numbered exhaust pipes
« on: February 25, 2010, 11:39:39 am »
I met a well known VJMC memeber/restorer at the Barber festival last weekend. He suggested "Hot Tanking" used pipes to clean them. He said you have to find a radiator shop that will work with you, but you simply let the pipes soak until they are clean inside. He said the latest set he did took a couple of weeks to get clean, but after that, they are ready to be sent to a chrome shop. If anyone knows any more about this method, I'd love to hear it.

3
Chrome - Anodizing and Other Metal Finish Procedures / Re: Question about plating un-numbered exhaust pipes
« on: February 25, 2010, 11:38:22 am »
Hi ojbiii,

I'm in the same situation. I have a nice set of un-numbered's. But, from what I've found, most platers will not replate used pipes because the carbon contaminates their tanks.

4
Gauges - Levers and Cables / Re: Metric Speedo & Tach (The Japanese Thread)
« on: February 25, 2010, 11:35:35 am »
Thanks Marty and myhondas,

So here's an update from my end. First, my cousin said she doesn't speak enough Japanese to help me out, so that's out the window. Second, I found that Yamyia sales a Japanese version of the parts list. It probably spells it all out nice and clearly in that particular version. I'm considering buying it.

Myhondas, you're right. There are definitely extra sockets in that picture, but I think there may be two harnesses in the photo (maybe a speedo & tach?) with the 8th socket hidden by a shadow or something. Also, since I last posted, I visited a friend in Atlanta that restores and customizes 750's. While I was there, he said, "Here I have something for you" and pulls an indicator light off a shelf. It has the red housing, the screw on plug, bulb, and wiring. It's a completely self contained unit. I couldn't believe it. I don't know if it works. the plastic is cracked and the one of the male plugs is missing, but it's a start.


5
Lighting Systems and Chassis Electrical / Wiring / Speed Indicator Light Japan
« on: February 25, 2010, 11:26:37 am »
I emailed Yamiya and asked about the indicator light mechanism. Their reply was to ask if I was looking for the harness pictured below. So I'm guessing the Japanese speedo harness has the extra light bulb on it? I can't tell by the picture. But that's not the mechanism itself, so I stopped by my local Honda dealer and asked the lady in the parts department if they could order Japanese domestic parts. The reply I got was crickets....and a blank stare...and "Um...I don't think so." I have a cousin who teaches Japanese and spent some time there so I'm going to ask her to help me search the web for the remaining pieces to our puzzle. I'll post any finds.


6
Frame and Chassis Related Elements / Japanese Kickstand Info
« on: February 25, 2010, 11:22:37 am »
Hi Guys,

Steven, is this the kick stand you're looking for? I found this on Yamiya's Japanese site. They do not offer it on the English side of the house. It's 89 bucks. Not bad to complete a unique restoration. One more piece of the puzzle.


7
Gauges - Levers and Cables / Re: Metric Speedo & Tach (The Japanese Thread)
« on: February 25, 2010, 11:19:47 am »
Marty,

If you have any pictures of your Japanese K0, please post them. I'm starting the get the itch to turn my K0 Japanese. Also was it any easier, harder, or the same to find parts while in Japan?

P.S. I like where this tread is going so I amended the title to "Metric Speedo & Tach (The Japanese Thread)" Anyone out there want to contribute Japanese specific information, please feel free to post it here.

Blake

8
Gauges - Levers and Cables / Re: Metric Speedo & Tach (The Japanese Thread)
« on: February 25, 2010, 11:18:11 am »
Wow...how cool is that?! I would love to see pictures of the drive mechanism, and also of the kickstand tang you're talking about. This is why I love this site. What was once someone's old junk is now rediscovered and appreciated. I wonder how something intended for the Japanese market made it to Georgia.

cbx1047 posted pictures in his thread "Tail Light" showing a difference in the tail light lens. I checked Yamiya and they offer this lens in a tail light housing unit.

Aug 19, 2009, 8:19pm, cbx1047 wrote:Here are some pictures a domestic (Japanese) tail light and an American (export) tail light. You can see they are both the same size and shape. The only difference is the American type does not have a yellow reflector in the side panels. Marty K. 
 

9
Gauges - Levers and Cables / Metric Speedo & Tach (The Japanese Thread)
« on: February 25, 2010, 11:15:57 am »
I purchased a parts lot from a guy about 6 months ago and have been finding nice K0 treasures ever since. Recently I uncovered the nice set of metric gauges pictured below. First, the red light in the center of the triple tree, is it a previous owner mod, or is it correct? It seems like I read something somewhere about an indicator on the Japanese models, but I think that’s a long shot. Second, what to do with them? My first inclination was to throw them on e-bay, but I’ve recently been thinking about putting them on sandcast 5920 just to have something unique. Or if there is a European or Aussie member who needs them, I might be open to a trade. Thoughts & Opinions???

10
New Member Introductions / Re: New member with old 750
« on: February 24, 2010, 11:23:30 am »
In the latest issue of the Vintage Japanese Motorcycle Club magazine, there is an article on MotionPro's custom cable service. The can make almost any cable from scratch. They recreate a lot of exotic cables for restorations. They could probably repair your broken original as well. To get an order placed and processed was surprisingly simple and I'm guessing cheap vs. finding an authentic working replacement. Link below

http://www.motionpro.com/custom/index.php

11
Engine Mechanical / Re: Cylinder casting question for later sandcast
« on: February 23, 2010, 05:55:10 pm »
Yeah, I want to save it if I can, like Steve mentioned, but I'm concerned that there might be more issues with it once I pull it off and have a professional look at it. So I've taken the precaution of buying a correct replacement. That way I'm covered either way. Thanks for the post Tom.

12
Engine Mechanical / Re: Cylinder casting question for later sandcast
« on: February 23, 2010, 05:54:02 pm »
Thought I would follow up on this thread with some pictures of the fins in question. Let me know your thoughts.


13
Engine Mechanical / Re: Cylinder casting question for later sandcast
« on: February 23, 2010, 05:52:37 pm »
That's great information Steve. I'll make sure to discuss it all with any potential welder.

Yes, I'm that guy. I'm really excited to get connected with people who appreciate the sandcast 750 as much as I do.

14
Engine Mechanical / Re: Cylinder casting question for later sandcast
« on: February 23, 2010, 05:52:07 pm »
Thanks Steve! I feel better all ready. I hated the prospect of losing that cylinder, but have never dealt with repairing broken fins. I have a donor waiting. Now I just need to find a good welder.

15
Engine Mechanical / Cylinder casting question for later sandcast
« on: February 23, 2010, 05:51:19 pm »
I’m about to take delivery of sandcast 5920 with engine number 6000. Unfortunately the cylinder has a couple of broken fins. I want to replace it, but make sure I’m using the right style. I know that it shouldn’t have the cam chain bolt hole, but what about the casting modification? Picture A is of a sandcast cylinder, picture B is of a later casting that does not have the bolt hole drilled. Would “B” be correct for a late sandcast such as engine 6000? Or do I have to acquire an “A” for certain? Thanks for all your help.

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