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Broken pushrod

Posted By slick56 11 Years Ago
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slick56
Posted 11 Years Ago
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I have done about 40 miles on my new engine, and today, while taking off from the lights, the engine started running rough.
On looking in the rear view mirror, the r.h. pipe was blowing heaps of smoke, and at idle the revs were up about 200.
Upon getting it home i hooked up a vacuum guage and restarted it. No smoke for a couple of minutes (then plenty) but still running rough.
Pulled the pass. side valve cover and no pushrod for no.4 intake. Pushrod cup broken into 3 pieces, luckily still in the rocker area.
I have installed new camshaft and all new top end; valves, springs, collets, retainers; rocker shafts, 1.54 rockers and longer pushrods. i put in longer
pushrods because i kept the '56 oil trays.
I have no idea why the pushrod broke, there does not appear to be anything wrong, other than lash was a bit loose, i was going to re-adjust valves 
when i got home today.
As i do not have another long pushrod, will it be ok to run one of the slightly shorter ones that came from the engine, until i can source a new one from the USA, or should i replace them all with the shorter ones (which were a bit of a mismatch of two different styles) ??
Thanks, Al.



South Australia





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Forum Post Broken pushrod By slick56 ( 11 Years Ago )
Forum Post Similar problems were reported here a year or so a go. Apparently in... By PF Arcand ( 11 Years Ago )
Forum Post Have just pulled out the pushrods from two engines (the rebuilt 292... By slick56 ( 11 Years Ago )
Forum Post The pushrod cup is probably too small for the adjuster screw ball. You... By charliemccraney ( 11 Years Ago )
Forum Post Check to make sure that valve isn't stuck. By jonnireb ( 11 Years Ago )
Forum Post "The pushrod cup is probably too small for the adjuster screw... By slick56 ( 11 Years Ago )
Forum Post New does not necessarily mean manufactured correctly - I know because... By charliemccraney ( 11 Years Ago )
Forum Post when you pre lubed wher you getting oil to all rockers.when i bought... By 2721955meteor ( 11 Years Ago )
Forum Post [quote][b]charliemccraney (6/15/2014)[/b][hr]New does not necessarily... By slick56 ( 11 Years Ago )
Forum Post Was the fuel fresh when the new engine was fired? Old fuel will... By Ted ( 11 Years Ago )
Forum Post [quote][b]Ted (6/15/2014)[/b][hr]Was the fuel fresh when the new... By slick56 ( 11 Years Ago )
Forum Post Are you using original or aftermarket adjusters on your rocker arms,... By OZYRAY ( 11 Years Ago )
Forum Post [quote][b]OZYRAY (6/15/2014)[/b][hr]Are you using original or... By slick56 ( 11 Years Ago )
Forum Post [quote][b]OZYRAY (6/15/2014)[/b][hr]Are you using original or... By slick56 ( 11 Years Ago )
Forum Post When you reckon you have the correct adjusters put a thin smear of... By OZYRAY ( 11 Years Ago )
Forum Post Push rod length is determined by the position that the rocker arms... By snowcone ( 11 Years Ago )


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