Serial info?

hello daron,cannot help with parts info ,but serial number info below.

1J7365 , maybe 5j7365 is a 1945 model


3S7765 was built for 3 yrs from 1945-47

hope this bit of info helps,bruce oz

Hi Daron,
3S7765 is a 1946 model.
Could not find a D3400 Industrial with a 1J prefix but there is a D3400 01T7001-up listed in the SNID (no year given)

What I listed as a 1J is actually a 1T (1T7563SP). Did the 1T precede or supersede the 3S series? Curious minds.

Thanks, Daron

As the 3S was carried up to 1948 I'd say the 1T preceded but I can't find and date info in what I have.

When you do the parts infusion and figure out that cranks, cams, gears, rods, pistons, liners (all parts inside and outside the block) fit a J series engine. Maybe you can keep the good extra parts for resale? Someone is always looking for D2-J series engine parts.

Daron:

Your engines were built as follows:

1T7563...1943
3S7765...1946

Here is the entire lineup for the D3400 Industrial Engines:

9J4001 thru 9J4909 built '39, '40, '41
3R6001 thru 3R6975 built '41, '42
1T7001 thru 1T9928 built '42, '43, '44, '45
3S7001 thru 3S8235 built '45, '46, '47

Basically these engines were all the same rating. Different serial number blocks were assigned over the 9 year production run. The engine family was replaced with the D311 Industrial engine in 1947.