Adding low water fitting to 2005 XR6 Lower Unit

**Liberator*21** · 09-11-2020, 05:19 AM

What is the recommended thread size (NPT) for adding a low water pickup fitting on the suction side of the L/Unit water chamber ?
Thx

**TEXAS20225** · 09-11-2020, 09:57 AM

lwp? you mean a cone job?? its 1/2 npt ! years ago when i was doing only lower unit rebuilds and cone jobs now and then i started doing a lot of coning and had much better luck getting the cooling i was needing using two hose's instead of one jm.02

**rgsauger** · 09-11-2020, 09:26 PM

Originally Posted by TEXAS20225

lwp? you mean a cone job?? its 1/2 npt ! years ago when i was doing only lower unit rebuilds and cone jobs now and then i started doing a lot of coning and had much better luck getting the cooling i was needing using two hose's instead of one jm.02

One hose on each side really makes a difference, Tex? What did you run for hoses and fittings?

**nitro_rat** · 09-11-2020, 09:43 PM

Originally Posted by rgsauger

One hose on each side really makes a difference, Tex? What did you run for hoses and fittings?

Yes, and also according to John Marles from his cooling mods article:

Originally Posted by us1

Nose cones seem to need two-½ inch hoses from the cone to the pump to really make good flow and pressure.

**TEXAS20225** · 09-11-2020, 10:53 PM

i always used Bobs stuff when it was still Bobs i had account with them they had a very good cone in my opinion i used hard copper tube of the ac variety as it was bigger then water copper tube so more water! and then i fiberglassed them in they looked cool

after i stopped going to all that trouble i used hose and fittings provided by Bob and bought stainless braid for hose cover but i always welded these guys up more then anyone i knew but not solid i liked to pour epoxy in the gap in between housing and cone so no void was left just in case. im not sure how many i did it was quite a few i shipped them all over the US for several years but i quit after i started building more and more motors shucks i could build two motorswhile i was messing with that one gear case

**Greg G** · 09-18-2020, 08:31 PM

Originally Posted by Liberator*21

What is the recommended thread size (NPT) for adding a low water pickup fitting on the suction side of the L/Unit water chamber ? Thx

Where did you find a 2005 XR6 lower unit?

**Liberator*21** · 09-19-2020, 04:07 AM

Originally Posted by Greg G

Where did you find a 2005 XR6 lower unit?

FaceBook Market Place.

**Liberator*21** · 09-25-2020, 05:47 AM

-12 AN Fitting is in. Thanks all.

**tnelsmn** · 10-07-2020, 05:28 PM

What are you guys doing with the drain fitting on a much older case? About to weld the cone on and not sure what to do with the drain.

**tlwjkw** · 10-08-2020, 04:23 AM

Originally Posted by Liberator*21

-12 AN Fitting is in. Thanks all.

jus a question.. where is tha "other end" that feeds tha pump?

**tlwjkw** · 10-08-2020, 04:29 AM

Originally Posted by tnelsmn

What are you guys doing with the drain fitting on a much older case? About to weld the cone on and not sure what to do with the drain.

ya gotta "french" it in with a very short piece (can be long ta start and cut ta fit your body work) of tubing welded and/or epoxied to tha case.....

**Liberator*21** · 10-08-2020, 05:35 AM

Originally Posted by tlwjkw

jus a question.. where is tha "other end" that feeds tha pump?

This is a work in progress project. I've yet to machine up a water pickup for the transom, it will be similar to a Bob's unit except better. I would have gone with a low water pickup nose cone but my 15" mid won't allow it, it would interfere with the clamp/jackplate.