Re: sparkplugs

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

Rob Grady was recommending the platinum plugs for years. He has been 
getting cars back for repeat tuneups and has noticed that the seal on 
the platinum plugs (between the porcelin and the metal shell) has been 
leaking. He has also received complaints on the plugs. It doesn't 
happen on every plug but in light of his experience and the high cost 
difference he no longer recommends installing them. Any slight 
improvement will be offset by leakage. The car operates just fine on 
the standard Bosch plugs if properly gapped and installed. I think the 
micro washers are fine for race applications but for a street car the 
effort is not worth it. Before modifying the car talk to a Delorean 
parts vender, they see cars with many more miles and many more cars 
then most people and can comment knowledgebly on your "improvements".
Many of the ideas you see have been tried and anything good that 
stands the "test of time" will have been incorporated by now. There 
are no "magic bolt-ons" that will measureably improve the motor.
David Teitelbaum
vin 10757