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Today I got the cylinders off the engine of the second bike. A few more parts removed and the engine can come out. At that time, I can start moving everything from the old frame to the new.
Anyway, I used a hoist to help remove the cylinders and this time it took only a day of hitting it with a hammer. Big change from last time I did this (2 weeks).
The constant tension from the hoist and half a can of PB Blaster did the trick. I also used a single edge razor blade to "break the seal". I tapped it into the grove a short distance and it expanded it enough for it to start pulling apart. I also hit it a lot with a rubber mallet and used some wood blocking for leverage.
I had the very same problem this time with corrosion around the studs. The forward studs between 1-2 and 3-4 were badly corroded at the top. The forward inner studs had corrosion near the base which made the very last part very difficult.
After removal of the cylinders, I checked the bore and they were even and in specs with a very low variance in width between top and bottom (within the margin of error). The piston rings also look in good shape.
Here are some photos.
Anyway, I used a hoist to help remove the cylinders and this time it took only a day of hitting it with a hammer. Big change from last time I did this (2 weeks).
The constant tension from the hoist and half a can of PB Blaster did the trick. I also used a single edge razor blade to "break the seal". I tapped it into the grove a short distance and it expanded it enough for it to start pulling apart. I also hit it a lot with a rubber mallet and used some wood blocking for leverage.
I had the very same problem this time with corrosion around the studs. The forward studs between 1-2 and 3-4 were badly corroded at the top. The forward inner studs had corrosion near the base which made the very last part very difficult.
After removal of the cylinders, I checked the bore and they were even and in specs with a very low variance in width between top and bottom (within the margin of error). The piston rings also look in good shape.
Here are some photos.
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