Bravo trim pumps
11-13-2010 | 04:47 AM
#2
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Joined: Nov 2010
Posts: 284
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[QUOTE=ken sampson;3251825]Does anyone know if the Bravo trim pumps are adjustable for more or less PSI output on the trim cylinders?
[Quote]Technically speaking for stock use? No it can not be adjusted, If you don't care about the trim pump and the money you will spend while trying to see what makes them tick in different ways, then there is a way to play with the adjustment a little bit to see what happens to it at your own risk. You will need to study and read between the lines in the mercruiser service manual #11. You will need to look to see what Hex "jam" nuts you would half to turn to throw the stock mercruiser settings out of specifications.
Here, Have a look starting at page 5A-24, You should see what I mean as you read through it.
http://www.boatfix.com/merc/Servmanl/11/11a5r5x.pdf
also what is the factory pressure? ]QUOTE]
The up circuit is 2200-2600 psi, And the down circuit is 400-600 psi.
Why do you want to do this???
[Quote]Technically speaking for stock use? No it can not be adjusted, If you don't care about the trim pump and the money you will spend while trying to see what makes them tick in different ways, then there is a way to play with the adjustment a little bit to see what happens to it at your own risk. You will need to study and read between the lines in the mercruiser service manual #11. You will need to look to see what Hex "jam" nuts you would half to turn to throw the stock mercruiser settings out of specifications.
Here, Have a look starting at page 5A-24, You should see what I mean as you read through it.
http://www.boatfix.com/merc/Servmanl/11/11a5r5x.pdf
also what is the factory pressure? ]QUOTE]
The up circuit is 2200-2600 psi, And the down circuit is 400-600 psi.
Why do you want to do this???
11-13-2010 | 07:42 AM
#3
Ginger or Mary Ann?
Joined: Oct 2000
Posts: 11,030
Likes: 9
From: L
Higher pressure doesnt necessarily mean faster operation, if that is what you are after
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11-13-2010 | 09:49 AM
#4
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Joined: Jan 2006
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trim pumps
I wanted to use these for my Arnesons ASD-8's and since they are already mounted in the boat they all look the same.
I think the ASD-8 requires 2200 for down pressure and about 1800 for the up pressure.
I think the ASD-8 requires 2200 for down pressure and about 1800 for the up pressure.
