Rotary valve

[carl penrod]

I desided to keep my Challenger, So I ordered two rebuilted motors from SBT. Pulled my old motors, swicthed everything over on the first motor with no problems.
on the 2nd motor I timed the rotary disk and installed the cover, torked it to specs. Now I can not turn the motor over by hand. So I pull it apart and put it back on with no luck. It seems like the cover is smashing the rotary disk. Any ideas what I could be doing wrong?

 

[racerxxx]

You might need to take some measurements or try the cover from the other engine. Hopefully they didn't cut the case to fix it ans messed up the depths.