Originally posted by tbirdjayc:
Seriously, what will a couple taps with a hammer do? This is a forged crank which get hit with 200hp explosions at a rate of 7000 a minute. You're telling me it will be damamged by a couple taps with a block and mallet?
You're applying impact force at 90 degrees to the engineered stress angle on your BEARINGS. Considering that they are resting on an aluminum block, it might be a potential source of damage. Also, rather than just prying the pulley off, they make special pullers to avoid lateral stresses on the crank shaft & its bearings when removing the crank pulley. That's clue #1.
Did you damage your engine/bearings/crank? Probably not. Could you have? Yep. I just saw the post about impact on the crank & thought it would be responsible for me to post about the potential dangers of this & offer an alternative.
Seriously, glad you got it on & are enjoying the car! I can see how these would make a bigger difference in the MTX cars - especially those with light weight flywheels. It just didn't make a big difference in my V-6 SE ATX. Oh well, I bought piece of mind for under $50. 
Must be that jumbly-wumbly thing happening again.
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