Impeller change 383 Stroker

Islandtrader · #1 08-16-2015, 04:23 PM

Has anyone out there done a raw water impeller change on a Mercruiser 383 stroker engine? If so any tips or tricks? FYI it has a serpentine belt and it looks like you have to take the pump off .

Thanks,

Jeswick · #2 08-16-2015, 07:35 PM

isn't the water pump/impeller in the outdrive ?

FLexpat · #3 08-16-2015, 11:26 PM

Quote:

Originally Posted by Jeswick

isn't the water pump/impeller in the outdrive ?

All Bravo drives, like the Volvos, have engine mounted raw water pumps. Alphas have outdrive mounted raw water pumps. I don't know how to change the Merc Bravo raw water impeller; mine is a crankshaft mounted Johnson pump - I don't know how to change the Merc Bravo raw water impeller.

bobbert · #4 08-17-2015, 09:48 AM

Just a thought, have you checked the raw water intake??? Up here we have problems with stuff growing in the intakes.

FLexpat · #5 08-17-2015, 01:04 PM

This may help...
https://www.youtube.com/watch?v=UxLfF2abE_o

FishStretcher · #6 08-17-2015, 10:17 PM

I have no knowledge. But I have factory manuals. But I bet you do too. If not, let me know.

Islandtrader · #7 08-19-2015, 07:37 AM

Quote:

Originally Posted by bobbert

Just a thought, have you checked the raw water intake??? Up here we have problems with stuff growing in the intakes.

No problems...just doing a 1st time preventative maintenance change.

Quote:

Originally Posted by FLexpat

This may help...
https://www.youtube.com/watch?v=UxLfF2abE_o

Thanks...saw this before, but I was hoping for one showing a serpentine belt (video) like what I have.

Quote:

Originally Posted by FishStretcher

I have no knowledge. But I have factory manuals. But I bet you do too. If not, let me know.

Haha...believe it or not I do not have the manual. So any help would be appreciated.

FishStretcher · #8 08-20-2015, 11:10 AM

Ok what exactly is the model? I'll look tonight

Islandtrader · #9 08-21-2015, 08:06 AM

383 mag mpi...bravo 1 1.65r

FishStretcher · #10 08-23-2015, 09:36 PM

I finally found my manuals. They don't cover the 383, but they cover the 305-377 CID engines. I suspect it is the same but I don't know for sure. It does cover the 350 MAG MPI.

I think I have a gen ? cool fuel? Mine looks like this

https://www.youtube.com/watch?v=eZYJq746awc

Pretty much you have to detension the serpentine belt and pull the whole pump. It looks like the procedure is pretty similar, brass versus composite housing.

my manual goes from 0M300000-1A299999

If you know which housing you have I can scan pages. I suspect your engine and mine would be the same.