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raw water pumps on 4BTAs

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Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
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raw water pumps on 4BTAs

Postby MarkT » Tue Mar 05, 2019 9:16 pm

Things are moving forward on the engines. Had valve jobs on both engines and new after coolers are coming. One thing that has bothered me as long as I have owned this boat is changing the raw water pumps. They are mounted on the left side of the engine under the injection pump. To change them you have to loosen the motor mount, jack up the engine and remove some fuel lines. Then you can remove the pump. Doing the port engine is impossible unless you are thin, short, and a contortionist. I am 62 and none of those anymore! So for the past 3 weeks with the engines out, I have been measuring and designing a new pump set-up. First I drew a workable design. Then I mocked it up and put it on the engine. Then I ordered the parts. Using a pedestal pump belt driven on a separate bracket I believe I have the answer. Parts came from all over the place and now the steel is at the welders along with two crankshaft adapters. Should be installed in a few weeks.
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These users thanked the author MarkT for the post (total 2):
YOLO (Fri Mar 08, 2019 6:00 am) • agendaguy (Sun Mar 17, 2019 8:22 am)


Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
Been thanked: 34 times

raw water pumps on 4BTAs

Postby MarkT » Fri Mar 08, 2019 1:54 pm

New after coolers arrived Thursday, and I picked up the pump drive from the machinist today. He had to take a lot of material off to get it to my dimensions. Look back at the pictures above with all the parts laid out with the water pumps. The original piece is on the left, right in front of the water pump.
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Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
Been thanked: 34 times

raw water pumps on 4BTAs

Postby MarkT » Mon Mar 18, 2019 9:20 pm

Brackets are finally welded up, picked them up this morning. I got the nuts and bolts needed to mount the pump on it, and should be at the boat installing all this in the morning.
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Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
Been thanked: 34 times

raw water pumps on 4BTAs

Postby MarkT » Tue Mar 19, 2019 8:04 pm

It took a lot of fine tuning but I got the brackets and pumps installed today on the motors.
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Woodworker2001
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raw water pumps on 4BTAs

Postby Woodworker2001 » Thu Mar 28, 2019 7:57 am

Looks nice mark. Gotta love when a plan comes together

Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
Been thanked: 34 times

raw water pumps on 4BTAs

Postby MarkT » Sat Mar 30, 2019 7:04 pm

Thanks, we are getting there. Ordered parts needed to finish it up (I think). I was able to get the after coolers set up. Since they do not make them anymore I had to fit another style. I made the mounting bracket, and I had to take off the air intake manifold and cut the pipe off to re-align it. I may be able to fire them up next week.
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Woodworker2001
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Posts: 46
Joined: Thu Nov 22, 2018 8:47 am
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raw water pumps on 4BTAs

Postby Woodworker2001 » Thu Apr 04, 2019 2:54 pm

Very nice. Going to look at a 3000 express this weekend

Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
Been thanked: 34 times

raw water pumps on 4BTAs

Postby MarkT » Thu Apr 04, 2019 6:09 pm

Great, hope it is a good one. Let me know if you have any questions on it.

Topic author
MarkT
Senior Member
Posts: 412
Joined: Tue Apr 05, 2011 10:42 pm
Home Port: Mattituck, Long Island
Vessel Info: 1999 Pursuit 3000 Express, twin Cummins 4-BTAs
Been thanked: 34 times

raw water pumps on 4BTAs

Postby MarkT » Fri Apr 12, 2019 10:21 pm

After Coolers are now fitted. Starting them up next week I think. Waiting on a beading tool to put that lip on the new turbo piping.
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Woodworker2001
Junior Member
Posts: 46
Joined: Thu Nov 22, 2018 8:47 am
Has thanked: 6 times
Been thanked: 4 times

raw water pumps on 4BTAs

Postby Woodworker2001 » Mon Apr 29, 2019 9:26 am

Sure is looking good

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