67 Super Hawk project

Mike Mullins · Post by **Mike Mullins** » Wed Feb 25, 2009 9:56 am

Picked up sandblasting media at Tractor Supply yesterday, and set about blasting the top end. I learned some things. ( My previous experience with sand blasting has been stripping the metal deck furniture. ) The media I got was "fine" grade and is black - looks like ground up slag from the steel mills. Well, it is not "fine"- its actually pretty coarse, and as you can see from one of the following pictures, it pretty well digs up the surface of the metal. I went over the surfaces with a scotchbrite pad, and that took most of the damage away. I also found while rinsing the part in the kitchen sink, that my wife's spray bottle of Goo Gone was more effective in removing the gunk than the sand blasting had been. Had I but known that was under the sink I would have saved myself a great deal of work. At any rate, I am now read to do the bottom end.
Mike

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Feb 25, 2009 1:35 pm

Ya may find that the surface will now allow oil to penetrate deeply and because of the rough/sharp media. I always finish aluminum parts with round glass media. ..............................lm

Mike Mullins wrote:Picked up sandblasting media at Tractor Supply yesterday, and set about blasting the top end. I learned some things. ( My previous experience with sand blasting has been stripping the metal deck furniture. ) The media I got was "fine" grade and is black - looks like ground up slag from the steel mills. Well, it is not "fine"- its actually pretty coarse, and as you can see from one of the following pictures, it pretty well digs up the surface of the metal. I went over the surfaces with a scotchbrite pad, and that took most of the damage away. I also found while rinsing the part in the kitchen sink, that my wife's spray bottle of Goo Gone was more effective in removing the gunk than the sand blasting had been. Had I but known that was under the sink I would have saved myself a great deal of work. At any rate, I am now read to do the bottom end.
Mike

Mike Mullins · Post by **Mike Mullins** » Wed Feb 25, 2009 2:21 pm

LM: I see now that the stuff I got was not what I needed ( What I needed was a BIGGER bottle of goo gone, or more Purple POwer. Maybe if I get another bottle I can get another free camo steering wheel cover. Put it on the wife's Buick. Wouldnt she be happy .........not)
So now I need to ask, if I glass bead it now, will that help to correct the oil situation ? Or is it worth the trouble do you think. .. For sure I will bet getting a BIG tub and soaking the cases to get them clean- not blasting them with anything.
FWIW, I took the cases apart today, and the smell was really rank. There was oil gelled in the bottom of the cases. I think what happened was there was some water in there, and our little bit of running homogenized it, just like the wife's cold cream. The oil on the dipstick was very clean and clear when we checked it before we started it. ( of course it probably had 20 or 30 years to settle out and would be clear.) Next set of pictures hopefully will show a nice, clean engine all together and ready to go back into the bike. Or maybe me or the 6' 8" son on it grinning from ear to ear !
Thanks
Mike

Mike Mullins · Post by **Mike Mullins** » Fri Mar 13, 2009 9:18 pm

made some progress today while wife and sister in law went shopping. Put the head back together aftef lapping the exhaust valves lightly. Thanks to all who advised me on proper way to disassemble cam and reassemble last year, and especially to LM. Also for advise on how to assemble crankcases. I'd still be trying to put the top on the bottom, instead of the easy way.
Then finished cleaning gasketed areas and assembled crankcases, and then cylinders and head.
Looks like I will be riding it fairly soon, but I am taking my time and sorting my ziploc bags as I go to be sure I dont forget anything.
Mike Mullins

Mike Mullins · Post by **Mike Mullins** » Mon Apr 27, 2009 7:54 pm

Pretty much done. finished painting tank, put it together (mostly-still a few detail things to do) and was going to ride, except it rained all afternoon. Also, its only running mostly on the right cylinder. I will get to that in a couple of days.
Have new computer, hop pics com thru
Thanks to all, esp emo.
Now on to turning bob the bobber into a CB 77 cafe racer.
Mike

caldreamin · Post by **caldreamin** » Sun May 10, 2009 5:57 am

Mike Mullins wrote:made some progress today while wife and sister in law went shopping. Put the head back together aftef lapping the exhaust valves lightly. Thanks to all who advised me on proper way to disassemble cam and reassemble last year, and especially to LM. Also for advise on how to assemble crankcases. I'd still be trying to put the top on the bottom, instead of the easy way.
Then finished cleaning gasketed areas and assembled crankcases, and then cylinders and head.
Looks like I will be riding it fairly soon, but I am taking my time and sorting my ziploc bags as I go to be sure I dont forget anything.
Mike Mullins

so wheres the thred about how to assemble the crankcase??

Mike Mullins · Post by **Mike Mullins** » Sun May 10, 2009 6:35 am

Sent a PM to caldreamin, but thought I'd elaborate. The comment about crankcase assembly came after reading a casual comment in one of LM's replies to someone. In it he mentioned putting assembling the crankcase components with the top half of the crankcase upside down on the bench, and then placing the bottom half on the assembly and buttoning it up. It was an aha moment. Doing it this way means you can align the shifter forks and make sure everything is in place and works. Then you put the bottom half of the crankcase in place and bolt every thing down after sealing properly.
Mike

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67 Super Hawk project

pretty much done

crankcase assembly