Halp Diamond Star Motoring

[George Gorman]

Broken OH cams in alloy heads can result from a bad overheating experience
- the head permanently warps and can put enough force on the cam bearings
to crack the cams.

This advice came courtesy of a backyarder experienced with 2 ltr mazda
626/ford telstar alloy heads.

George Gorman


At 09:08 9/04/99 -0700, you wrote:
>
>Peter,
>
>Unfortunately, it is an interference engine.  The timing belts have a habit
>of breaking and taking a few (or many) valves along for the ride.  Those in
>the know recommend changing the timing and balance belts every 30,000 miles.
>I've never heard of anyone breaking a cam though, so maybe you've got
>something else going on.
>
>After markets cams are not real popular, but they do exist so you can
>probably pick up a used cam on the parts trader.  Though, once you start
>pulling parts you're likely to find out that it's not worth fixing.  
>
>Good Luck,
>Mike
>
>
>
>-----Original Message-----
>From: Peter Fenske [mailto:pfenske at bcit.bc.ca]
>Sent: Friday, April 09, 1999 1:48 AM
>To: diy_efi at esl.eng.ohio-state.edu
>Subject: RE: Halp Diamond Star Motoring
>
>
>
>
>Hi All
>
>Thanks to David, Bruce and Mike as well as others for help with
>the 2.0 mitsibushi..
>
>Prob was a broken exhaust cam.. Cam sensor is driven off intake cam
>broken halfway to be exact..
>
>Well hope is not an interference engine..