Where do you folks typically find these plugs? I'd like to source a good set for my 1915 Reo
Rock Auto had a good price last time I checked.
Look for Champion 425
I buy mine at NAPA. Just be sure the 425s you get are 1/2"pipe thread, not 14mm straight thread (modern).
There are two ways to get them. Buy new ones online or at a store for over $100 a set, or spend $13 for a set of Autolite 3095 and use those while you shop for original Champions at swap meets and on eBay from $5 to $7 each. I think the last ones I bought at Chickasha were $3.
I have the 425 in my runner. They work great and look good. We just purchased the autolights for the engine my son, is trying to get put back together. We have not tried them yet, as we need to rebuild the coil box.
I have 11 Champion X plugs. I believe are new old stock, still in the boxes.
I am planning to list them in the classifieds tomorrow for $40.00 each plus postage, OBO.
PM me if you are interested.
Bruce, sent you a PM. Thanks!