Re: Best Way to Unseize an Engine

[chinewalker]

Complete teardown is the best way to repair it as then you can deal with any rust ridges in the bores, crusty bearings, pitted crankshaft, etc. You can punch the pistons out with a press, using a piece of metal dowel on the rods to avoid damaging them. You might get lucky and find you can tap the pistons out with a wooden dowel using any of the penetrating elixirs mentioned above, but if they’re really stuck, save your time and frustration and just punch them out with the press. Other methods may be needed on blind bore motors, but I have done dozens of OMCs this way and it works very well with them.