Packard Forum Index » Pre-War (1899-1942)

This one is easy -- Anyone have a suggestion as to modern spark plugs for the car? Car currently has 8 "Rentz" spark plugs which look period correct. I'm concerned though that the metallurgy of antiquated spark plugs won't work well with heat temperatures of modern fuels. I need plugs with threaded screw tops posts. Any have experience with the best plugs to use and a vendor who currently sells?

Thanks!

Good Morning...Kanter will almost certainly have them. Max Merritt as well. Ernie in Arizona

The spark plugs will not be affected in any way by the fuel, except that they will last far longer than they did in the days of leaded fuel. Fir 'er up with Rentz babies.

Go to the AutoLite site and under spark plugs search for your make and year. I believe your plugs are 7/8 NPT threads and they do have a suitable plug.

Anyone know if Autolite 3076's have a threaded post, so that the bullet connector can be removed and the spark plug wires be secured with thumbscrews?

I use Autolite 303 in my 32, it should be the same for 31. It has the screw top.