Re: lasagna heat shield

["jtrealty@xxxx " <jtrealty@xxxx>]

Be very careful in handling the heat shield. It is made of asbestoes 
and should be treated with care. Do not breath in the fibers and try 
to minimize creating any. It sounds like the mixture is very rich, see 
if the muffler is glowing red. To adjust you remove the tamper plug on 
the mixture unit and adjust the setscrew in the mixture unit. You 
really need an emission analyzer and exhaust port set-up to do it 
right, a minor adjustment has a large effect. To replace the shield 
most Delorean venders have a non-asbestoes shield which looks just 
like the origional. Be sure to dispose of the old one properly it is 
asbestoes and there are strict rules regarding it. I replaced mine and 
for a while the new one emitted a terrible odor until it finally was 
gone. Mechanically it is pretty easy to replace but I would first 
adjust the fuel system so as not to burn up the new shield.
David Teitelbaum
vin 10757



--- In dmcnews@xxxxxxxxxxx, "Walter" <Whalt@xxxx> wrote:
> What causes a muffler heat shield to wrinkle and warp to the point 
that it
> gets cut up in the belts and pulleys?
> 
> The owner thinks this is due the effects of moisture from storing 
the car
> for so many years under a carport. He thinks it got wet and stayed 
wet for
> too long. I'm wondering if this could have been caused by the 
exhaust
> system from over-heating. The car has 19K miles on it and the owner 
says
> that the muffler has been replaced because it 'went bad'.
> 
> He quit driving the car several months ago because it was 
'flooding'.
> 
> Based on this information, is it likely that the engine was running 
too rich
> and over-heated the muffler? And if this is the case, what can 
cause an
> engine to do this? A bad control pressure regulator?
> 
> Also, what is the best replacement for this heat shield? Are the
> replacements available made of asbestos?
> 
> Thanks,
> Walt Tampa, FL