I'm really curious about this pinging in 4.7s. I see a lot of posts about
this with colder plugs, higher octane and 180 thermostats as the solution.
My 4.7L '00 Grand Cherokee 4x4 has 24,000 miles, original plugs and
thermostat and a steady diet of 87 octane. No pinging whatsoever!? It's
run a best of 15.58 in the 1/4 with 15.80s common place in hot weather.
Is this pinging issue only with newer 4.7s? Anyone have a theory why so
many people have this problem and my '00 doesn't? Is it just a Dakota
problem? If DC got mine right, why didn't they get all of them right?
(oh yeah, I forgot, if it ain't broke, pay an engineer to fix it!) :-)
Ray
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
----- Original Message -----
From: "kevin reimer" <kwreimer@msn.com>
<snip>
Subject: DML: Re: Autolite's for non-Dodge
>
> Try a 180 Thermostat in both vehicles, this eliminates most of pinging on
> the 4.7..
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