<VV> Bent Push rods

jvhroberts at aol.com jvhroberts at aol.com
Thu Oct 8 17:23:43 EDT 2009

 Could also be a stuck valve, jamming in the guide. 


John Roberts



-----Original Message-----
From: Bruce Schug <bwschug at charter.net>
To: VV <virtualvairs at corvair.org>
Cc: Jeff <jirwin2 at insight.rr.com>; Michael Kovacs <kovacsmj at sbcglobal.net>
Sent: Thu, Oct 8, 2009 3:31 pm
Subject: Re: <VV> Bent Push rods

Pretty good list. I'd add over-revving. I think that if you over-rev  
it you can reach a point where the pushrod isn't strong enough to keep  
everything going and it bends.


On Oct 8, 2009, at 3:22 PM, Michael Kovacs wrote:

> Lets see if analysis is right:
>   The lifter is pushed by the cam.
>   The lifter moves the push rod.
>   The push rod interfaces with the rocker arm.
>   The rocker overcomes the valve spring pressure.
>   The valve stem moves inside the valve guide.
>   The valve opens in time to miss the piston.
> Things that can go wrong??
>  The valve hits the piston.
>  The valve stem binds in the valve guide.
>  The rocker arm doesn't move.
>  The valve spring is broken.
> I has a similar incident with a 460 Lincoln. The rocker arm cocked  
> (nut came loose) and the push rod did not like it. Replaced the  
> rocker arm and stuff. Ran fine after that.
> Any body else have a clue. I'd like to know too.
> ----- Original Message ----
> From: Jeff <jirwin2 at insight.rr.com>
> To: virtualvairs at corvair.org
> Sent: Thursday, October 8, 2009 1:57:30 PM
> Subject: <VV> Bent Push rods
> We have a 110 motor and the pushrods on #2 cylinder get bent. We  
> have replaced the lifters to try and cure, but the problem still  
> exists. Has anyone had this happen?
> _______________________________________________

Bruce W. Schug
Treasurer, Membership Chairman
CORSA South Carolina
Stock Corvair Group
Performance Corvair Group
CORSA member since 1982
bwschug at charter.net

This message was sent by the VirtualVairs mailing list, all copyrights are the 
of the writer, please attribute properly. For help, mailto:vv-help at corvair.org
This list sponsored by the Corvair Society of America, http://www.corvair.org/
Post messages to: VirtualVairs at corvair.org
Change your options: http://www.vv.corvair.org/mailman/options/virtualvairs 


More information about the VirtualVairs mailing list