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-   -   Looking for merc raw water pump with side inlet/exit not backside in/out? (https://www.offshoreonly.com/forums/general-q/357688-looking-merc-raw-water-pump-side-inlet-exit-not-backside-out.html)

GrannySShifting 11-15-2018 11:50 PM

Looking for merc raw water pump with side inlet/exit not backside in/out?
 
Anyone aware of some like that? Need a compact dimension from serpentine pulley to back of pump body the std slip on inlet/outlet is a no go. Need something like one section of this two stage pump setup


https://cimg9.ibsrv.net/gimg/www.off...8c4af23930.jpg

And the setback pulley on this

https://cimg7.ibsrv.net/gimg/www.off...4234561c3b.jpg
And I might be able to shorten a little bit out of the assembly below to buy some more room, looks like 1/4" from end of pulley shaft is extra.

Pump body & shaft

IGetWet 11-16-2018 09:04 AM

If you call Hardin they should be able to set you up with a single stage of the pump pictured above. I have that pump and I’m turning it into a single stage and I just talked to them about it.

GrannySShifting 11-16-2018 09:34 AM


Originally Posted by IGetWet (Post 4659371)
If you call Hardin they should be able to set you up with a single stage of the pump pictured above. I have that pump and I’m turning it into a single stage and I just talked to them about it.

Is it aluminum or stainless in the rotor housings?

underpsi68 11-16-2018 10:15 AM

Hardin should be stainless

SABER28 11-16-2018 07:34 PM

could you run two 90 degree fittings on the hardin pump? thats what i did. btw, for all the complaining on a thread about the hardin ss. pump, mine work great and look even better.

SABER28 11-16-2018 07:37 PM

i used the teague generation 4 billet bracket that clamps around the pump housing, you can adjust the pulley depth wherever you want it.

BUP 11-16-2018 08:15 PM


Originally Posted by SABER28 (Post 4659493)
i used the teague generation 4 billet bracket that clamps around the pump housing, you can adjust the pulley depth wherever you want it.

I use the same pumps as well - they have been around forever and work well -- I use the standard Merc bracket that bolts to the body. I do have the Teague billet brackets but it does not mount to the body -- it mounts to the shaft INWHICH I do not like cause you are compressing the shaft body. IMO its putting a load on the shaft so I DO NOT USE that bracket. I ll post a pic of the Teague bracket

SABER28 11-16-2018 09:10 PM

the problem i had with the stock brackets is that they flexed at high rpm and the serpentine belt jumped off the pulley.

the clamp pressure isnt that tight, i only tightened them with a 5 inch allen wrench. could that possibly distort the housing?

Baja Rooster 11-16-2018 10:03 PM


Originally Posted by SABER28 (Post 4659490)
could you run two 90 degree fittings on the hardin pump? thats what i did. btw, for all the complaining on a thread about the hardin ss. pump, mine work great and look even better.

I did the same. The stock pump bottom nipple was right in front of the engine mount and the top one interfered with the distribution tubes. A 90 on the lower and 45 for the fresh water and all is happy.

I couldn’t get the Hardin pump to prime when I put the impeller in with dish soap but pulled the impeller out and slathered it with marine grease (on the ends seemed to be imperative) and pumps like a champ now. I think that shiny stainless can be a bit too slick like glazed cylinders.

rv 11-17-2018 04:54 AM


Originally Posted by Baja Rooster (Post 4659514)


I did the same. The stock pump bottom nipple was right in front of the engine mount and the top one interfered with the distribution tubes. A 90 on the lower and 45 for the fresh water and all is happy.

I couldn’t get the Hardin pump to prime when I put the impeller in with dish soap but pulled the impeller out and slathered it with marine grease (on the ends seemed to be imperative) and pumps like a champ now. I think that shiny stainless can be a bit too slick like glazed cylinders.

Do you have Gen 1 or 2, when you look in from fitting do you see edge of impeller vains (gen 1) or are they blocked off by a plate so you don’t see them?


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