I'm trying really hard to picture this, but not succeeding.

On my engine, the raw water pump is pulley driven, mounted on a
bracket. You have to take that sucker off to change the impeller, a
situation I'm trying desperately to figure out how to change via a
direct-drive pump, but can't yet figure out how to tell my engine SN
(which isn't apparent where the manual sez it should be) which
apparently is needed to confirm that a direct drive pump is available.
But, I digress...

My freshwater pump is mounted to the engine, and has a gasket such as I
infer from your post. However, the typical freshwater pump failure is
from the bushing, producing a leak forward, not at the engine body.

However, my Perkins is a 4-154. My understanding had been that these
were the same block - BICBW, of course, as happens more and more the
older I get. Is there an impeller you've changed in the raw water
pump? And if so, this pump is mounted with a gasket/seal between it
and the engine? Or are we talking about a different pump?

L8R

Skip, very sore from my marine yard sales adventures yesterday


Morgan 461 #2
SV Flying Pig KI4MPC
http://tinyurl.com/384p2 The vessel as Tehamana, as we bought her

"Twenty years from now you will be more disappointed by the things you
didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails.
Explore.
Dream. Discover." - Mark Twain