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Wow..really sorry to see that. If it were me I would replace the piston and disassemble, clean and replace rings and bearings on the entire bottom end....you might also want to think about farming it out...In my younger day's I assemebled a few engines and they never seemed to last very long...I will always go pro build in the future...
You shouldn’t use that piston. It looks like the screw punched through at the quench; you should check the rod to make sure it didn’t bend. Also check the bore if it’s all torn up you may have to punch it out to .040.
If you replace the piston you should also rebalance. I think you could reuse it if you clean up the damage with some emory cloth, get rid of all sharp edges. Not ideal but will save you alot of work & $$.
As long as piston walls are perfect with no grooves then I would replace the piston and head.
If you know how th screw/bolt got in there then just live and learn.
If you don't then I would look into it to avoid a repeat incident.
Good luck
No. But I once had a wrist pin retainer fly off the pliers, across the garage and straight into the crank case of my Harley engine. I couldn't find the retainer anywhere on the floor so on a hunch I stuck a magnetic retreiver in the crank case. There it was. I couldn't have tossed it in there if I tried. Crisis averted.
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
Originally Posted by evalu8r
Ding Ding Ding Ding. You win the prize. Is that guess from experience?
I was swapping an intake once, got it all bolted up, was putting the coil braket on the intake ( before i put the carb on) had to walk away..... somehow lost the other bolt to the braket oh well got plenty o spares right
If you were really a Bubba you would patch it up with JB weld and bolt it back together and then sell it to me.
All the while smiling and figuring that it is fixed properly and I will never know the difference.
When I found out and threatened to beat you to within an inch of your life you would reply "What is your problem? I have done that many times and there was never a problem. I use JB weld and super glue to fix everything."
Wow..really sorry to see that. If it were me I would replace the piston and disassemble, clean and replace rings and bearings on the entire bottom end....you might also want to think about farming it out...In my younger day's I assemebled a few engines and they never seemed to last very long...I will always go pro build in the future...
Had similar incident back around '83. Installed a rebuilt carb on my 350 in '74 Z28. Screw in carb made its way into cylinder. Destroyed the piston, bent a rod, cracked the cylinder and damaged both the rod and main bearings. Bearings, rod, piston and sleeved cylinder (#6 if I recall correctly). Had driven the car about 100 miles before the screw made its way into the cylinder then all hell broke loose. Must have been left over from the carb rebuild.