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Dec 30th, 2023
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 Evinrude lower unit
#7993296
09/14/12 12:36 PM
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Joined: Jul 2011
Posts: 227
Jonathan LeCrone
OP
Outdoorsman
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OP
Outdoorsman
Joined: Jul 2011
Posts: 227 |
I just replaced the lower unit on my 92 evinrude 200hp. I noticed I cant get enough water pressure when my tilt is at it highest for optimum speed. I lose about 12 mph by keeping the tilt down. Should I just drill a hole in the lower unit to get more water?
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Re: Evinrude lower unit
[Re: Jonathan LeCrone]
#7993433
09/14/12 01:26 PM
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Joined: Aug 2006
Posts: 7,186
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,186 |
NO... don't drill any holes.
lower the motor on the jackplate.
it's too high.
S2 Marine 714 S. Main Quitman, Tx. 75783 www.s2marine.coms2marinesales@gmail.com Blazer Boats, Excel Boats, Sun Chaser Pontoons, Thor boats, Legend Craft Boats
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Re: Evinrude lower unit
[Re: Jonathan LeCrone]
#7995384
09/14/12 09:09 PM
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Joined: Sep 2008
Posts: 121,182
hopalong
Pescador Loco
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Pescador Loco
Joined: Sep 2008
Posts: 121,182 |
NO if you go more than 1/4" below the lower intake hole your into the gear area. please don't ask how I know this. scoops work great to raise pressure. these are what I put on mine. this is from my 82 175 johnson, raised my pressure to over 30 psi at wot. and I ran the engine high. blew that lower due to submerged floater, new one has them too. 
" Hop, set the hook"!
hopalong 99,999
TexDawg 99,999
FJB! not my president by a long shot!
lake fork FISHERMANS COVE MARINA/reservations - 903 474 7479
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Re: Evinrude lower unit
[Re: Jonathan LeCrone]
#7998144
09/15/12 05:36 PM
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Joined: Apr 2007
Posts: 2,165
Team Brown Stripe
Extreme Angler
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Extreme Angler
Joined: Apr 2007
Posts: 2,165 |
Guys with Mercs usually plug the top holes. I think the top 3-4 on mine are plugged on both sides and I have no issues with cooling or pressure.
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Re: Evinrude lower unit
[Re: Jonathan LeCrone]
#8000774
09/16/12 03:39 PM
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Joined: Nov 2005
Posts: 4,061
Mike Halfmann the boatmann
TFF Team Angler
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TFF Team Angler
Joined: Nov 2005
Posts: 4,061 |
Drilling a hole may not solve any problems, it may raise a few though. Either your engine is too high or you're trimming it too far out. You may want to invest in a low water pick-up like what CMC sell. They are especially good for extreme motor elevation.
mike halfmann
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Re: Evinrude lower unit
[Re: Jonathan LeCrone]
#8000991
09/16/12 04:41 PM
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Joined: Dec 2009
Posts: 1,482
RANGER SKI
Extreme Angler
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Extreme Angler
Joined: Dec 2009
Posts: 1,482 |
if you did not have this problem before i would check the water pump gskt,imp and the tube that for up from water pump housing.
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