motor go boom

[Len Sabatine]

     If you decide to tear down, Have a competent engine machinist check the
     big end bores of any rods that didn't turn a bearing, If any of them 
are out of
     round on a 30 - 45 d angle from vertical , your engine was detonating.
     Rod Big end size needs to be 2.2250 and Round with up to . 0005 to .001
     larger directly on the parting lines, being acceptable. This is the 
first place
     to look for combustion related damage to the bottom end. Loose Main caps
     and shine marks  in the registers are another indication of detonation 
and or
     poor dynamic balance.
         Time for the detective work to begin. Good Luck .
     Len

>I was actually watching it with a scantool when it happened, I changed my
>inj. constant and wanted to check my INT numbers from 60,65,70,75mph.
>Running perfect.  All right on 124-129.  I may have spun a bearing, because
>my oil pressure did go from 45 ish to 55ish right before.  Before the whole
>headgasket thing, it was 60+ always.  Temp was 178F.
>
>Thanks for listening to my electroyappin!
>Ryan Hampl - a K-State Grad!  kasaryan at aol.com
>139 Hoover Ct.                     Controls Engineer
>Salina, KS  67401                  97 B12 / 93 chevy truck EFI 383
>phone  (785) 825 5831
>I'M ALWAYS FIRST TO THE GROCERY STORE!
>http://hometown.aol.com/kasaryan/myhomepage/hotspot.html
><A HREF="http://hometown.aol.com/kasaryan/myhomepage/hotspot.html">Ryan Hampl
>and his happenin' Hotspot</A> - updated 11/20/00
>----------------------------------------------------------------------------
>To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
>in the body of a message (not the subject) to majordomo at lists.diy-efi.org

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org