<VV> Re: VirtualVairs Digest, Vol 18, Issue 26

[Padgett]

> > Can plugs with a high heat range cause pinging in a turbo 180? I
> > bought new plugs @ NAPA (only ones they had) & when the engine heats
> > up I get pinging under load when the turbo kicks in.Not when cold,
> > though. Never had the problem with the old AC plugs. Can switching to
> > a cooler plug stop the pinging? Running 91 octane, new plugs, timing

If lower than Denver you should be running 93 octane. Bosch W8AC plugs are 
plentiful (at least here), cheap,  and do not ping in mine. Any chance the 
timing is not retarding under boost or the mixture is leaning out ?

Padgett