Crankshaft Dampner Separated -- Arghh!

[ERA Chas]

Use the ARP spec that comes with the bolt. Don't remember but I think mine was 105-115 lbft. Yours should not break so easily-you were lucky.

I also hate turning the crank bolt when adjusting valves. Years ago Powerhouse (now owned by Comp) made a neat tool when Roy owned the company. It was for Chevs but I tried to adapt it. Had three holes which were attached by the pulley bolts and a 1/2 square hole in center for a ratchet or extension. Was not deep enough for the FE application. They don't show them on their site now.

[patrickt]

Originally Posted by ERA Chas

Use the ARP spec that comes with the bolt. Don't remember but I think mine was 105-115 lbft. Yours should not break so easily-you were lucky.

That curl bar is 34" long -- I can put a heck of a lot of torque down on the end of a three foot long pole. But if I had to swear to you, I don't think I put down more than enough to break loose maybe a 50 ft/lb bolt, if that. But it's really hard to tell when you have that much leverage, so it could well have been in the 70-90 range.

[blykins]

I could see how you could make the crank bolt fail in a Chevy.....but not a Ford engine. All Ford crank bolts are 5/8" diameter. That's one thing I could never understand about the Chevy junk.....fasteners were all the size of pencils.

[patrickt]

Originally Posted by blykins

I could see how you could make the crank bolt fail in a Chevy.....but not a Ford engine. All Ford crank bolts are 5/8" diameter. That's one thing I could never understand about the Chevy junk.....fasteners were all the size of pencils.

She's a pretty serious bolt. Looks and feels brand new. I'm tempted to skip buying a new one.

[ERA Chas]

Originally Posted by patrickt

But if I had to swear to you, I don't think I put down more than enough to break loose maybe a 50 ft/lb bolt, if that. But it's really hard to tell when you have that much leverage, so it could well have been in the 70-90 range.

With the plugs in the motor, it takes almost 90 on a 1/2" drive torque wrench to turn mine.