DeTomaso Mailing List: May 98, Message #247

I know my pinging problem went away when a new carb was installed. 
Maybe in your case, it may have been the manifold.  But a carb is a
complicated device.  Anyway, it sounds like you are on the right track
now.  Enjoy!

BTW:  Sorry it took me so long to respond, but it's tough trying to keep
up with all the posts that are now on the net.

Andy DiFatta
'72 Copper Pre-L

Cristiano Rossi wrote:
> 
> A couple of my winter projects were to rebuild my carb and to mount an
> Edelbrock Performer-intake,  type 2665 (the other winter projects were not
> related to the engine). After restarting the engine, my engine pinging
> (10.6:1 compression) is almost gone! It must probably be because of the new
> manifold. I guess it can't be because of the rebuilding of the carb.
> 
> The pinging was worse between 2000 and 3000 rpm with a good amount of
> throttle. Now it either doesn't ping at all, or it only gives one little
> ping when pulling through this rpm-range in 5th gear.
> 
> I had the standard 4V-manifold before, and I had actually feared that the
> new manifold would worsen the pinging problem because of the better filling
> of the cylinders.
> 
> If the cure is because of the Edelbrock-manifold, as I believe, here might
> be an idea for someone else with the same problem.
> 
> Cristiano Rossi
> thpnma 02869