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1952/1953 Spark plugs
Posted: Sat Aug 19, 2017 4:25 pm
by Victor Ingram
What would be the correct Bosch spark plug with number for a 52/53 early 1500 normal engine?
thx
Re: 1952/1953 Spark plugs
Posted: Sun Aug 20, 2017 12:51 am
by Spencer Harris
W225 T1 for 1500N
W240 T1 for 1500S
Re: 1952/1953 Spark plugs
Posted: Sun Aug 20, 2017 9:07 am
by Victor Ingram
Excellent, Thank you Spencer
Re: 1952/1953 Spark plugs
Posted: Wed Aug 23, 2017 12:08 pm
by James Davies
In addition, Bosch spark plug insulator design changed over the course of the 1950s. The early ones were not ribbed, and the green stripes were dark green and depending on year, had different thicknesses. The 1950s spark plugs have Bosch date code letters stamped into them for the year. So H for 1952 and J for 1953.
In the photo below, "P" 1958 on the left, "J" 1953 on the right.