In 1951  only six big twin models were offered.  The EL and FL models were continued.  ELS and FLS sidecar gearing models that where offered in 1949 but not in 1950 where brought back.    production of the low compression models E and F was discontinued. Also in 1951. new style gas tank emblems, chrome plated piston compression rings and rocker arms were machined with pushrod sockets. In mid 1951 the M-74B carburetor was introduced along with a larger diameter pinion shaft.

 

 

1951 gas tank emblems

Here are some great sources for detailed information about Harley Davidson’s 1951 Panhead

hydra-glide.com The panhead and flathead site

How to restore your Harley-Davidson by Bruce Palmer 111

The Harley Davidson Panhead service manual 48-57 rigid

Riding vintage website

the Jocky Journal web forum

1951 models

model	engine type	actual displacement	compression	options
EL sport solo	61 c.i.high compression	60.32 c.i.	7.0:1	—
ELS sidecar twin	61 c.i.high compression	60.32 c.i.	7.0:1	S = sidecar gearing
ELF sport solo foot shift	61 c.i.high compression	60.32 c.i.	7.0:1	F = foot shift
FL sport solo	74 c.i.high compression	73.66 c.i.	7.0:1	—
FLS side car twin	74 c.i.high compression	73.66 c.i.	7.0:1	S = sidecar gearing
FLF sport solo foot shift	74 c.i.high compression	73.66 c.i.	7.0:1	F=foot shift

NOTE: the ” F “ denoting foot shift will not be stamped in serial number.

NOTE: the ” S “ denoting sidecar gearing will not be stamped in serial number.

1951 models available colors

paint	stripes	speedometer
Black	—	Bluish gray center. cream white mph numbers. red indicator
1951 metallic blue	—
Metallic green	—
Persian red	—
Rio blue	—
Silver	—
White	—

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