"JamesgangNC" wrote in message
ink.net...
For what it's worth the top section will be normally pretty hot after
running on plan a while. It's pretty far out of the water and the gear
oil does not circulate. How do you know it has a faint scraping noise if
it's still on the boat?

With muffs at fast idle in my back yard the top bearing gets to be about 30
degrees hotter than the rest of the outdrive. A faint scraping like rust in
a roller bearing can be heard from the top of the outdrive. Noticed it one
cool morning as it was steaming (visable vapor), felt it and it was hotter
than the rest of the outdrive. I Assume that the top bearing can be dry (no
oil, it's above the top vent hole that you "fill to") and when not used for
extended periods... rust

Never heard of "the typical hole" that bleeds air into the water?
Mercruiser service note: a small hole develops near the pump housing and at
high speed sucks air from the exhaust into the raw water system. this
reduces cooling slightly and since this happens when the engine is at max
load causes overheat.


"Jeff Rigby" wrote in message
...
Got a mercruiser alpha gen II outdrive that the bearing going into the
outdrive (not the hub) gets hot, also has faint scraping noise. Anyone
know the average cost of repair? I'm going to remove the outdrive and
carry into the service center.

Also, the cost to weld the typical hole that bleeds air in to the water
intake on Mercruiser outdrives above 35 MPH causing overheat and a new
skeg (previous owner ground it off )

Thanks, I'm just using any prices posted here as a reference.

Why don't you take the top cover off and have a look at the bearing race. It
should take you less than 5 minutes.
JIMinFL

"Jeff Rigby" wrote in message
...

"JamesgangNC" wrote in message
ink.net...
For what it's worth the top section will be normally pretty hot after
running on plan a while. It's pretty far out of the water and the gear
oil does not circulate. How do you know it has a faint scraping noise if
it's still on the boat?

With muffs at fast idle in my back yard the top bearing gets to be about
30 degrees hotter than the rest of the outdrive. A faint scraping like
rust in a roller bearing can be heard from the top of the outdrive.
Noticed it one cool morning as it was steaming (visable vapor), felt it
and it was hotter than the rest of the outdrive. I Assume that the top
bearing can be dry (no oil, it's above the top vent hole that you "fill
to") and when not used for extended periods... rust

Never heard of "the typical hole" that bleeds air into the water?
Mercruiser service note: a small hole develops near the pump housing and
at high speed sucks air from the exhaust into the raw water system. this
reduces cooling slightly and since this happens when the engine is at max
load causes overheat.


"Jeff Rigby" wrote in message
...
Got a mercruiser alpha gen II outdrive that the bearing going into the
outdrive (not the hub) gets hot, also has faint scraping noise. Anyone
know the average cost of repair? I'm going to remove the outdrive and
carry into the service center.

Also, the cost to weld the typical hole that bleeds air in to the water
intake on Mercruiser outdrives above 35 MPH causing overheat and a new
skeg (previous owner ground it off )

Thanks, I'm just using any prices posted here as a reference.