Quote:
Originally Posted by jsukey
For the love of god, replace it!!! You don't want to go through what I did. The timing belt and water pump were replaced on my T4R a month before I bought it. I put several hundred miles on it, and then one day as I was turning out of an intersection...I had no power. I thought that perhaps I had broken the supercharger belt, as it was barely running. I pulled over and lifted the hood. After inspection, I noticed that the main crank pulley was out of whack. Well, after crawling underneath it, I realized what happened. The bolt backed out, and let the main crank pulley just ride on the edge of the crank. It filed down the woodruff key and over half of the groove that it sits in. I was faced with either tearing down the entire engine to replace the crank, or just replacing the engine. I ended up replacing the engine. Cost me around $3500 for the engine and labor. Even had a friends shop help me with the labor. I think the bolt is around $11. Toooootally worth the insurance. That bolt has to be torqued down to around 220 ft. lbs if I'm not mistaken.
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Nothing to do with old bolt and everything to do with proper torque. Unless you use the special crank pulley hold tool or bind the flywheel to keep things from turning you arent gonna properly torque it to 220lbs... Or you can do like most and impact it to probably 400lbs haha...its not gonna come out as long as its very tight but too tight could shear off the head or stretch the bolt but i have a feeling thats probably 1000lbs +
