Freeing a stuck engine
(→Using penetrating fluids) |
(→Breaking the engine loose) |
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Plumbers suppliers sell pipe-freezing kits (BP of the Freon replacement -50C) so it is fairly easy to freeze a piston to try to un-stick it from its bore. Liquid Nitrogen is better (BP-196C) but its not so easy to obtain. Dry ice or even a carbon dioxide fire extinguisher are also very effective in creating sub zero temperatures (BP -57C). Propane which is easy to obtain boils at -42 degrees C but there is the fire hazard to consider. | Plumbers suppliers sell pipe-freezing kits (BP of the Freon replacement -50C) so it is fairly easy to freeze a piston to try to un-stick it from its bore. Liquid Nitrogen is better (BP-196C) but its not so easy to obtain. Dry ice or even a carbon dioxide fire extinguisher are also very effective in creating sub zero temperatures (BP -57C). Propane which is easy to obtain boils at -42 degrees C but there is the fire hazard to consider. | ||
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| + | Just used all methods above and freed up Mercruiser 200 that sat for 2 years with oil drain pug removed and water filling up the oil pan. Mix 1 part MMO, 1 part WD-40 Specialist, 1 part PB Blaster and 1 part ATF -the cheap stuff works just fine as you will be draining. Remove spark plugs and spray Sea Foam Deep Creep [ one can on each side of block ] into cylinders and let sit for 1-2 days. With Proforms Engine rotation adapter p/n 66782 or similar remove the pulleys and install adapter to front of harmonic balancer, attempt to turn crank in small increments. Fill cylinders again and reinsert plugs. Wait 1-2 days and repeat, this time, fill the engine with the 5 gal mix posted above. Continue to turn crank in small increments. Mine moved about 1/8". Continue the cylinder spray alternating PB blaster and Sea Foam Deep creep. After 2 weeks, top of engine with 4 quarts of 15-40 hd oil. Continue to turn crank. Mine let go tonight after 2 weeks of this treatment, great feeling. Be sure to tap crank as mentioned in this article with longitudinal force, this seemed to be what caused it to "let go". Note - use the 1" socket on the Engine rotation adapter or you will break the tool from force on the internal 1/2" drive cut out while trying to break the engine free. Good luck and the hardest part, HAVE PATIENCE | ||
==After the engine has broken loose== | ==After the engine has broken loose== | ||
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