Huh?

[GORDON BROWN]

Hello Davomoto

This is not as uncommon as you would think and almost certainly factory done.
hopefully attached is a photo of a pair of .5 OS CB72 pistons that had been marked 1.00 OS and beleive it or not it's not the first I have seen.
Not much help to you I know and still strange from the factory, I wonder if the person who did the first stamping worked there long?

Gordon

SAFOJ

[davomoto]

Interesting for sure Gordon! I can't see the stampings in your pic, but sounds like the same deal. The cylinder sleve on one side was toast, so I bought a std cyl off Ebay. I took it and a set of .50 pistons to the machine shop yesterday.

Davo

[conbs]

Gordon, Thanks for sharing that info. I would never have guessed it would happen and as you say, I wonder how long the person who mis-stamped those pistons stayed working at the factory. Or, perhaps it was the guy that turned them and not the guy who stamped them that created the issue.

Jerry, yours is truly an interesting bike so it forces us all to think outside of the box. I am rebuilding a Dream and X-ing the gears, porting the head and putting in CL cams and carb. I thought it would be sort of interesting, but it will be nothing compared to yours. You probably have the best stories of any Dream owner around.

[LOUD MOUSE]

I'm not sure ya want to "X" the gears in a DREAM trans. ...........lm

Gordon, Thanks for sharing that info. I would never have guessed it would happen and as you say, I wonder how long the person who mis-stamped those pistons stayed working at the factory. Or, perhaps it was the guy that turned them and not the guy who stamped them that created the issue.

Jerry, yours is truly an interesting bike so it forces us all to think outside of the box. I am rebuilding a Dream and X-ing the gears, porting the head and putting in CL cams and carb. I thought it would be sort of interesting, but it will be nothing compared to yours. You probably have the best stories of any Dream owner around.

[jerrybb]

I wish the Dream stories weren't quite so interesting. This saga goes back 4 years when I got the bike. I was able to free the frozen piston and got it running but saw that something was wrong. I thought it was just not firing on the left side and emailed and sent photos to Bill Silver on the 305 Yahoo group. He was pretty surprised to see the dual point setup, etc and one of the three possibilities was CB guts in a CA case, which seems to be the answer.

If Bill is reading this forum, this is the "Mystery Dream" from back then. I'm really anxious to get it on the road in good running condition, also to get some plating done and prob some painting although I don't need a show bike, just a nice presentable rider.

[conbs]

LM, I researched X-ing on this site a good while back. I thought I had seen a calculation of the difference in ratios and it seemed to show a slight improvement for a CA. At the time I decided it made sense and have the transmission together with the gears x-ed. But with your post above, I "searched" again and found a couple of posts made since I did that initial look, finding comments that it would probably not help because the Dreams have highway gears. It still seems to me that a little less space between 1st and 2nd would make for better riding.

Is your advice based on experience of X-ing a Dream or a calculation of ratios or ???

Thanks for your help on this. I have had the cases ready to put together for a while, but have been too busy with work to get to it. The spring bug bit a couple of days ago and I started preparing to finish the motor. If I did build this motor with the gears x-ed, I could compare the transmission differences directly with my other Dream. Anyone ever done that? Appreciate everyone's opinions on this.

Davo, sorry to hijack your thread.