Engine Seized Worth it?

[plyzo]

I was able to pick up 2 bikes from a guy and one of the motors is completely seized and has been sitting for 20 years. I was able to remove the head but having a really hard time getting the pistons out. I am not able to crank the motor over at all. It is completely frozen. Just wondering if its even worth trying to salvage this thing. I wanted to get to the case cause I am sure there is some good parts in there that might be worth holding onto. Anyone have some recommendation for me on how to get this thing even more disassembled?

 

[plyzo]

More pics.

 

[misfitfiend]

Just start soaking everything with penetrating oil and be patient. I have heard brake fluid works pretty good too, but I have never tried it.

 

[SONICJK]

1/2 and 1/2 mix of acetone and automatic transmission fluid

 

[plyzo]

I will try the ATF and acetone and see how it goes. I can't even take off the center clutch or the oil filter.

 

[Rich Ard]

I need a cb450 exhaust valve if you are looking to split that up.

 

[Tim]

Don't need to remove the pistons to get into the case - take the bottom 1/2 off and you'll have your transmission. Won't get the crank out, but other parts will come and give you a better idea if it's worth the effort to get the crank.