Spark Plug Choices for 1147

amphicarian

New Member
Is anyone running those Bosch +4 (four electrode) spark plugs? I pulled out some Bosch WR7BP Platinums and was wondering if anyone had opinions on what is working best for them. I'm running points and have no radio now but hopefully in the future.
Thanks,
John U.
 

cigarman

Amphicar Expert
John,
I would just use the one electrode plugs. They are proven over 40 years and work the best. Bosch, Champion, (Lodge NOS) etc. Just make sure they have the 1/2 inch reach. A longer plug may cause damage to the piston.. if you are going to put a radio/stereo> get resistor plugs for less interference...

Cigarman
 

cigarman

Amphicar Expert
Hi John,
Stick with a single electrode plug. They have been proven over time. Use Champion, Bosch, Lodge (New Old Stock) etc. Just make sure you use 1/2 reach plugs. Using longer plugs may damage the piston.

Just a note> I used the Bosch 4 electrode on my 2002 Lincoln LS and it ran so bad that I returned them to Bosch and they actually told me they do not not work well with certain motors like mine and they refunded my money. My question was If you know this, why make them??? I put motorcraft plugs single electrodes back in and it ran fine till the day I sold it..

Cigarman
 
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