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Took Swan's advice and pulled the hubs from the vapor blasting pile. I am going forward with drilling the front hub with cooling vents. I may just have them bead blasted later. It's free and the turnaround is instant. What I am most excited about is salvaging some 930 Amal carbs that he is cleaning for $20/ea. That is such a good deal! He sonic cleans and vapor blasts them. I have a 5 gal sonic cleaner and I am still using his service!
For better or worse. I carefully made a template for the hold marks. Seems easier to drill inside out. Just need to go slow so I do not damage the outside area around the hole. Now to decide a 1" hole or 1-1/4"??? Also considered 3 smaller holes with a pie pattern between each ribbing. I am leaning against this in favor of the 6 larger holes. I am also leaning toward JB Welding a screen to help keep the nasty stuff like rocks and small children.
Picked up the cases from Bike-a-lot Vapor Blasting this week. Simply incredible. I don't think I will ever rebuild a motor without this service again. http://www.vaporblasting.biz/ Jeff was very good to work with and the work was done when he said he would be.
So are you going to paint the engine cases at all or leave them as-is? I have to find a vapour-blaster here in the Toronto area to do my engine parts before I assemble it. Even if I have to ship the cases to Oregon, I'm getting this done.
The cases are going to be built as is. I don't trust paint and polishing them would be a pain to keep clean. The hubs will be polished. I am power coating the frame black. Pretty standard issue Triton. Black and chrome never go out of style. I regret not vapor blasting before. I was always trying to save a nickel here or there and this was worth it. The carbs at $20 each is the best deal. Never noticed it till Jeff the vapor blaster pointed it out, the carb bowls don't have a drain plug. I assume they are aftermarket of some sort. Anyway, one less place to leak.
Well a little wd-40 never hurt anything. The cases are fine and should not have any oxidation issue. They said the finish should be a littltle more resistant to dirt. They are more resistant than walnut shell blasting which changes the finish of the metal. That is one of the selling points, vapor blasting does not change the metal finish. The carbs are a different story. The metal in Amal Carbs are legendary poor. They will oxidize.
I've emailed Jeff. Sadly there doesn't seem to be anyone in Canada doing vapor blasting (maybe I should buy some equipment). Lots of dry-ice blasting being done up here though, so I might look into that. No media at all to clean up after
Tim,
I would look further into dry ice blasting. The only reason would be freight. I don't know anything about it. The guy's in the UK all seem to use Vapor. I don't think I would dry ice blast carbs but cases might be a valid option.
Definitely going to explore it. For carbs I usually end up with new Mikuni's anyhow, so no need for cleaning At $100 or so each tops brand new, it's hard to justify spending any money to clean crappy old XS650 CV carbs and rebuild them. Ends up costing more than new Mikuni VM's. Can't say the same for Amal's though - some carbs are worth cleaning!
No pretty pictures to show right now. The barrels are being bored. The cams, tappets and crank re-ground. Hope to have this back in the next few weeks. The holiday no doubt will push things back. I have spent the week ordering pretty things for the motor. Engraved points cover, custom rocker box covers and finned oil feed. Later this week hope to get the primary cover drilled for the belt drive. Ordered a rebuilt kit for the carbs. I will do this over Christmas weekend.
Spent the weekend avoiding Krampus. I'm glad I took the time to purchase something for the one I love this holiday season.....myself. Rocker box caps and a oil feed. Kind of a lot of money for a very small box. Machine shop bills to come.
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