I am building a 383 stroker motor for my 86 iroc. Well wendsday the crank got dropped off the work table fell about two and a half feet to the concrete floor. I checked the crank over really good and there were no dents or chips on the crank. I went ahead and put the crank into the block and it turns with no bind. I am thinking of taking it to a shop and have them check it out but I don't know. I don't know what kind of effect this fall will have on the crank. Has someone had or heard of this happening to them.

 

You should be OK as long as you didn't mar the journals.Cranks are pretty tough, and take a continuos beating when running.

 

Ditto.
And concrete gives so it absorbs the energy from the hit some.

 

make sure they check the runout, if you bent the crank, it will turn good, but once the rods and pistons are in, it will vibrate, tear out bearings and seals, and possibly come apart due to unbalanced load.

 

If this shop will check it, Id do it just to buy yourself piece of mind. Id hate to see you get it all together and have some type of catastrophic failure. Im sure its ok, but if there is something wrong you will hate yourself for not looking into it...........

 

Uh Mike concrete" does not give at all!! now the panels will flex in between expansion joints but the properties of concrete will not it is hardend permanent product, unlike asphalt that will give! a porous plyable product, after 30 years in the asphalt industry, and ripping up many roads, concrete especially re-enforced concrete does'nt like coming out as easy as it went down. Sorry i forgot about the cars!! have the crank checked out, it took quite a hit.

 

thats true mike, i tested the strength of concrete with my face once.... NO GIVE


and yes thats explains a lot, blah blah blah...

 

HA HA Mike is wrong. Neener neeener neener. Plthhh! (Some of you know this is a continuation from another thread.....)

But seriously, concrete HAS been used to dissapate blunt impact. I believe its called Zimmerit armor (sp?), very popular among German armored vehiclesin WWII.

How this applies to this thread Im uncertain, but I couldnt just rip on Mike without first justifying his point.

Now Im going back to the library of useless facts............

 

.

 

i wish road were made out of concrete, they dont get as many pot holes, soft spots, and truck ruts