[DeTomaso] MME ENGINE - JESEL ROCKER ARM FAILURE

[Tomas Gunnarsson]

Has something solid suddenly entered those two cylinders?

Tomas

----- Original Message ----- 
From: "Chris Lewis" <clewis at dmn.net>
To: <detomaso at realbig.com>
Sent: Monday, July 28, 2008 9:53 PM
Subject: [DeTomaso] MME ENGINE - JESEL ROCKER ARM FAILURE


> OK so after only around 2000 street miles two of the Jesel Aluminum Shaft Rocker arms fail on my MME 427 Clevor.  One intake and one exhaust on two 
> seperate cylinders both cylinders on the passenger side bank.  The motor was run-in by MME, dynoed by MME with 10-12 pulls, and hot lash adjusted by 
> MME.  I was there for all of this except for the run-in.  Since that time the valve covers have never been off.
> 
> Any ideas as to why two brand new rocker arms would fail?  My mechanic says that they failed in exactly the same spot on the push rod side of the 
> arm.  Now I have no faith in the rest of the arms.  When are the remaining rocker arms going to fail?  I don't want to replace them with the same 
> thing if they are just going to break again in another 2000 miles.  
> 
> 
> Stainless steel rocker arms from Jesel are very expensive,  $200.oo each.  $3200 to make sure my motor stays together?  It's getting a little 
> expensive over here
> 
> Chris Lewis
> Clewis at dmn.net
> 
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