Home › Forum › Ask A Member › 1953 Firestone 10 hp, Model 1835, Lower units › Reply To: 1953 Firestone 10 hp, Model 1835, Lower units
I’m pretty sure the lower unit is identical to the 10 hp Scott Pennant. It’s NOT the same as the 7.5 of that era. It is not a bailer, there is a single 6-vane impeller just above the anti-cav plate. With a little work, a Honda impeller will work, but you need a sleeve to reduce the ID of the pump housing and maybe take a little off the top of the existing cup so the top plate seals. These are pretty nice engines, but louder than similar motors of that era. The “straight leg” Scott was dropped within a few years for the Bail-A-Matic motor with the curved leg and the high mounted cooling and bailing pumps. WICO condensers will need to be replaced, almost a guarantee. And never tilt them up by pressing down on the tiller handle.
T