This has been very common, even today.

Lots of motors come in 2 or even 3 different HP ratings on the same
'platform'.

It is very easy to check with all the specs on the Internet now.

They will have the same weight and the same displacement.

The size of the carburetor and other parts will give them more or less HP.

This is to save money so they don't have to build a separate "platform" for
each HP rating.

--
Bill Kiene

Kiene's Fly Shop
Sacramento, CA, USA

Web site: www.kiene.com


wrote in message
ups.com...
Hi folks:

I was told that the only difference between a 1982 model year Mercury
18 and 25 HP outboard motor is that the carburator was larger in the 25
HP model. Is that true? Thanks!

Clark