What causes a bent pushrod?

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04-10-2004, 10:52 PM

jessed

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What causes a bent pushrod?

I just started my rebuilt engine with vortec heads. and only ran for about 2 minutes with a slight popping sound. Pulled valve cover off and noticed a bent pushrod.

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04-10-2004, 11:06 PM

MotorHead

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Re: What causes a bent pushrod? (jessed)

Sounds like a valve hitting a piston to me, ask engine builder what the piston to valve clearance was on intake and exhaust valves :D

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04-10-2004, 11:35 PM

pillowmeto

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Re: What causes a bent pushrod? (MotorHead)

or too much lift, how big is the came, stock vortecs can only go to .48"

MAtt

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04-10-2004, 11:52 PM

MotorHead

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Re: What causes a bent pushrod? (pillowmeto)

Quote:

or too much lift, how big is the came, stock vortecs can only go to .48"

MAtt

Yes that is quite true it actually could be a number of things including cam lift too much for springs ( coil bind) , not enough clearance between the retainer and valve guide and the things mentioned above. All these clearances should be checked when assembling the motor :D

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