Were there any matching marks on the other rod? As in spreading like the one
that broke. You would think that if a piece of cam got between it would show
similar marks on other rod. I presume cast iron cam.
----- Original Message -----
From: "Keith Turk" <kturk@ala.net>
To: <land-speed@autox.team.net>
Sent: Tuesday, February 18, 2003 9:13 PM
Subject: Mule motor parts...
> Well I got the Mule motor out of the Camaro tonight and did the initial
tear
> down to determine why it failed..... I'd suspected a oil system problem
but
> here is what I've found so far....
>
> The oil pan came off even thou it had been hurt really bad by the rod
> slinging around and taking out the Block just above the pan rail... When
I
> removed the oil pan it had Two lobes of the camshaft sitting in it....
> further inspection revealed that the Cam broke right at the # 1 and 2
piston
> rod area.... if your thinking the Rod took it out.... I'm thinking it's
> possible... thou not likely as the rod is left in the bottom of the piston
> and on the crankshaft like the cam came apart and then stuck between the
> block and the rod allowing the rod to break..... I just find it odd that
a
> Carrillo rod which is free on the wrist pin and the crankshaft would break
> in the middle arbitraily.... but stranger things have happened.... oh the
> other thing I noticed was that the rod end on the piston has flared at the
> breaking point like something hit it... ( picture the side of the H beam
> rod being flared out like a V ) The piston is free in the block and the
> portion of the rod on the crank not only spins freely it's got the right
> amount of side play.....
>
> The last thing that might help us solve this mystery is that the push rods
> are straight as an arrow.... but Many of the lifter have the bottoms
punched
> out of them..... so I suppose it's possible that a lifter failed and
stuck
> the cam..... From initial inspection it's hard to see but it looks like
> only 3 of the valves actually hit a piston when the cam quit moving....
>
> Okay that's what I've found so far.... any thoughts from you guys?
>
> Keith ( oh Glen.... hush up.... )( Morning Dan )
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