Crank-mounted water pump?
#81
BEACH PARTY / HOLLOWPOINT
Platinum Member
Thread Starter
All of the hoses and fittings on my 502 MPIs were 1-1/4.
- incoming from sea strainer
- Merc pump in/out
- transmission cooler
- power steering cooler
- engine oil cooler
- thermostat housing inlet
The above is a what was stock on the starboard engine (no power steering cooler on the port engine).
All of that has changed since dumping the MPI, but it’s still 1-1/4 all the way through.
Agreed on not using aluminum. I think I’ve seen in brass as well as plastic.
- incoming from sea strainer
- Merc pump in/out
- transmission cooler
- power steering cooler
- engine oil cooler
- thermostat housing inlet
The above is a what was stock on the starboard engine (no power steering cooler on the port engine).
All of that has changed since dumping the MPI, but it’s still 1-1/4 all the way through.
Agreed on not using aluminum. I think I’ve seen in brass as well as plastic.
#82
All of the hoses and fittings on my 502 MPIs were 1-1/4.
- incoming from sea strainer
- Merc pump in/out
- transmission cooler
- power steering cooler
- engine oil cooler
- thermostat housing inlet
The above is a what was stock on the starboard engine (no power steering cooler on the port engine).
All of that has changed since dumping the MPI, but it’s still 1-1/4 all the way through.
Agreed on not using aluminum. I think I’ve seen in brass as well as plastic.
- incoming from sea strainer
- Merc pump in/out
- transmission cooler
- power steering cooler
- engine oil cooler
- thermostat housing inlet
The above is a what was stock on the starboard engine (no power steering cooler on the port engine).
All of that has changed since dumping the MPI, but it’s still 1-1/4 all the way through.
Agreed on not using aluminum. I think I’ve seen in brass as well as plastic.
#83
BEACH PARTY / HOLLOWPOINT
Platinum Member
Thread Starter
The steel-reinforced hose will bend pretty well. It will depend on how closely you want the hoses tucked around the engine. Do not use the steel-reinforced hose on anything that you need to easily take apart. The steel wire will make removal of the hose from fittings quite frustrating especially if space is tight (ie twin engines). I'm using it from the strainer to the pump, and then the pump to the transmission cooler (for added stability). Everything after the transmission cooler is soft-wall with 90-degree fittings to keep things close to the engines.
#85
Registered
edit/ for link
Last edited by getrdunn; 04-08-2022 at 09:15 AM.
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TomZ (04-08-2022)
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TomZ (04-08-2022)
#87
I’ve gone to local plumbing places to buy brass fittings (not Home Depot or lowes, you need a Ferguson or plumbing supply shop those big box stores should be able to tell you who the big guy is in town). You can make anything that way just beware of weight and cost…
my raw water is 1.25” from seacock through strainer to pump and to heat exchanger(s) From the main heat exchanger is 1” hose routed around to exit manifolds b/c of the fittings on the exchanger itself.
my raw water is 1.25” from seacock through strainer to pump and to heat exchanger(s) From the main heat exchanger is 1” hose routed around to exit manifolds b/c of the fittings on the exchanger itself.
The following users liked this post:
TomZ (04-09-2022)
#90
Allright. I have a question in regards to that alternator bracket Mercruiser part# 862778. It appears that the only place for that to mount to, has a tube connected to it that goes to my heat exchanger (Horizon motor with FWC). Am I right on that? Is that where it would go? I think I could grind/modify the bracket to fit but before I do that I wanted to confirm if that is where it is supposed to bolt to. See red circled bolt in pic.
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