Re: Max Wedge aluminum rocker arms

[Jimmy Peavy <peaver63@xxxxxxxxxxxxxx>]

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I've heard of similar problems with those rockers.

Jimmy

Brian Schlump wrote:

> Is anyone else using Crane aluminum roller rocker arms on their 426 Max 
> Wedge or clone engine?  I'm using the gold colored ones part #64792-1 
> and I've had problems with 2 sets.  Exactly 1 year ago this weekend I 
> was coming home from a car show and one lifter started making noise.  I 
> tore down the engine and found that intake rocker #5 had shifted toward 
> the exhaust rocker, and the aluminum portion was opening the valve 
> rather than the roller.  The valve stem wore right into the aluminum.  I 
> discovered that I messed up the assembly sequence, so I wrote it off as 
> a learning experience and ordered a new set.  I assembled that set 
> correctly, and figured that was the end of the problem.  Wrong!  Last 
> night when I left a cruise-in, the valves started making noise and the 
> engine was missing while driving home.  I just tore it down again and 
> this time both #1 and #3 intake rockers had shifted toward the exhaust 
> rockers.  In addition the snap ring came out of #3 hydraulic lifter, but 
> I was able to find all 3 broken pieces.  The engine hasn't been raced or 
> driven over 70 mph either time, so I don't know why the rockers jumped 
> out of place this time.  It has less than 2,000 miles on it since the 
> repair last year.  I took the intake rockers from the last assembly I 
> changed and made 1 good set from the two.  I also added 4 more round 
> shims to the spacer spring between all 4 cylinders of that head in order 
> to put more tension on the rockers.  Has anyone else had similar 
> problems with these rockers?
> Brian    
>
> '64 Belvedere
> Woodstock, IL.
>
> "The difference between ordinary and extraordinary is that little 
> extra."
>
>  

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