Spark plugs for 1937 Dodge D5

[bucik]

Hi,

 

Does anyone have a correct reference which spark plugs should I use for my 1937 Dodge D5, inline 6-cylinder. I found some info on the Internet but since I'm ordering overseas I wanted to double check.

[panelbeater1234]

where are you from ??

[bucik]

Poland

[Spinneyhill]

1937 Dodge D5 and 1938 Dodge D8 had either Champion J-8 or Autolite A-7 plugs originally, according to the National Service Data list of ca 1942.

 

Now to look up the cross reference charts...

 

J8 is a 14 mm plug of 0.375" reach, 0.813" hex size (13/16") and  seems to cross to

NGK 3510 or NGK B6S

AUTOLITE 314

ACCEL 124

 

Here is a simple heat range chart.

 

You should be able to find a modern cross reference plug in Poland?

 

 

Edited May 8, 2018 by Spinneyhill (see edit history)

[Spinneyhill]

Found some more information.

 

A 1955 Champion chart:

In terms of heat range, J-8 = AC 45, 45-Com, 44-5, 44-5 Com, 45R;  Autolite AR8, AT8, A7, 4S-140, 45R; KLG TFS50; Lodge C14, CAN; Bosch W145T4, W175T4.

 

1945 chart adds Autolite AN7, AH8 to the J-8 equivalence.

 

1962 chart adds Champion XJ-8 (resistor plug); AC C45; Autolite AT6; Bosch W145T3.

[bucik]

Hmm, that's interesting. The only reference I found was to Autolite 216 or 295 here https://hagensautoparts.com/dodge/41-electrical/15386

 

On the other hand the NGK 3510 is available on the Polish market so I guess I will give it a try.

 

Thanks!

[Guest]

I have used NGK plugs in my Pontiac for over 40 years.  I found them to last at least twice as long a AC or Champion, generally at least 20,000 miles/32,000 kilometers.  As my car was my daily driver the difference between one and two years of service per set was substantial.  I also found that the most economical place to buy NKG plugs was the local Porsche dealer.

Edited May 10, 2018 by Guest (see edit history)