View Single Post
  #17 (permalink)  
Old 03-09-2011, 08:55 PM
DIRTYDOG427 DIRTYDOG427 is offline
CC Member
Visit my Photo Gallery

 
Join Date: Apr 2006
Location: dallas, tx
Cobra Make, Engine: Unique 427 SO
Posts: 12
Not Ranked     
Angry Bent push rod now..

I got the end stands and new shafts from Doug..Precision Pumps Clovis. He was great and did what he said he would..Ordered em Mon or Tues and had em by Fri PM..amazing ! When I took a closer look at the old set up as I took off the old parts I discovered the 5 & 6 stand holes had helicoils in em.. and today I discover the push rod out of the 6 hole was bent ..I can't recall if it's the intake or exhaust hole but the important thing is that it's the hole on the strong side of the stand where the shaft broke..the 2nd hole from the left..so how did it bend??? I would understand if the bent pushrod was in the first hole where the shaft broke.
Then, I go to get new pushrods and the guy says I better check the cylinder for pressure to see if I have a bent valve..Could a stuck valve have caused this? and have I got damage to the lifter and cam?? Appreciate the help guys..
The old builder of mine didn't put the stands in the correct order as he had em lined up as 5 -7 - 6 -8...Instead of 5-6-7-8-..I don't know if it would make a difference...The new parts are nice and the end stands are a tight fit on the headbolts-- but work...oil holes a lot smaller than the ones on the old stands. slots and oil holes to the bottem on the new shafts---OK. but my old stands had extra offset oil holes in the bottem where the stand bolts go and the new ones the holes in the bottem are only as big as the bolts..?? How does that work? Is this all because of the center oiler system that sends too much oil to the heads?? Thanks for the help?? what next --manifold??
Reply With Quote