header logo

Go Back   Checkmate Community Boating Forums > Checkmate Discussion Forums > Powerplant Technical Discussions > Outboard Technical Discussion
Portal Home Register Blogs FAQ Calendar Mark Forums Read

Outboard Technical Discussion This is our outboard engine related technical discussion forum. Topics include engine repair and maintenance, modifications, gearcases, electrical and electronics, etc. For technical assistance related to topics not outboard related please use our other Engine forum.

Main Menu
Module Jump:
Google Search
Google
Latest Poll
October 2019's Boat of the Month Vote!
This poll is closed
I vote for "PA-Checkmate's" Convincor! 2 9%
I vote for "senator-holland's" Convincor! 0 0%
I vote for "KevinR's" Pulsare! 0 0%
I vote for "PA-Checkmate's" Convincor! 0 0%
I vote for "sim's" Enforcer! 20 91%
Voters: 22 100%
Replies (11)
Notices

Welcome to the Checkmate Community Forums

Reply
 
Thread Tools Display Modes
Old 10-08-2019, 10:48 PM   #1
Tyannt
Wannabe
 
Join Date: Sep 2019
Location: Cape Cod, Massachusetts U.S.A.
Posts: 19
Thanks: 17
Thanked 0 Times in 0 Posts
Rep Power: 0
Tyannt is on a distinguished road

Default Mercury outboard water intake modification

I came across a late 80's/early 90's Mercury 175Hp Black Max that had the water intakes on the sides of the propeller/gear housing filled over, and was told it now picks up water from the front of the propeller housing/cone. I felt a round hole i could stick my finger in. Was told the only drawback was if dragging the motor in the mud etc; would pickup junk...Additionally, i was told this modification allows the motor to be lifted higher, and still pickup water to cool the motor.



Is anyone familiar with this kind of modification?
Tyannt is online now   Reply With Quote
Old 10-09-2019, 09:32 AM   #2
PA-Checkmate
Persuader
 
Join Date: Dec 2006
Location: Western Pennsylvania
Age: 67
Posts: 255
Thanks: 9
Thanked 63 Times in 45 Posts
Rep Power: 159
PA-Checkmate will become famous soon enough
Model Owned: 2002 Convincor 270 496-MAG-HO

Default

All true...
__________________



PA-Checkmate is offline   Reply With Quote
The Following User Says Thank You to PA-Checkmate For This Useful Post:
Tyannt (10-10-2019)
Old 10-09-2019, 12:40 PM   #3
corey331
Diplomat
 
corey331's Avatar
 
Join Date: Sep 2010
Location: Dayton, OH/Burnside, KY
Age: 41
Posts: 1,700
Thanks: 1,192
Thanked 2,176 Times in 845 Posts
Rep Power: 153
corey331 has a reputation beyond repute
corey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond reputecorey331 has a reputation beyond repute
Model Owned: 88 Starflite, 98 253 Convincor LSX

Default

Quote:
Originally Posted by Tyannt View Post
I came across a late 80's/early 90's Mercury 175Hp Black Max that had the water intakes on the sides of the propeller/gear housing filled over, and was told it now picks up water from the front of the propeller housing/cone. I felt a round hole i could stick my finger in. Was told the only drawback was if dragging the motor in the mud etc; would pickup junk...Additionally, i was told this modification allows the motor to be lifted higher, and still pickup water to cool the motor.



Is anyone familiar with this kind of modification?
Had the exact same thing on my old Starflite. It really helped with water pressure at high speeds after I put a hydraulic jack plate on. The average depth of my home lake is 90ft., so hitting bottom wasn't an issue for me, but if you are in a shallow body of water, be extra careful.
__________________
corey331 is offline   Reply With Quote
The Following User Says Thank You to corey331 For This Useful Post:
Tyannt (10-10-2019)
Old 10-10-2019, 03:11 PM   #4
Tyannt
Wannabe
 
Join Date: Sep 2019
Location: Cape Cod, Massachusetts U.S.A.
Posts: 19
Thanks: 17
Thanked 0 Times in 0 Posts
Rep Power: 0
Tyannt is on a distinguished road

Default

Initially, i had thoughts that some enthusiast was checking out something he perhaps read about online! As it turn out he was, Lol I too was concerned; thinking of the consequences of sucking up mud, etc etc. I suppose i could always replace the lower
gear casing to return it to the original design...? After winterizing, could search for a stock housing to use next year..


Appreciate the reply!
Tyannt is online now   Reply With Quote
Old 10-13-2019, 10:20 AM   #5
Tyannt
Wannabe
 
Join Date: Sep 2019
Location: Cape Cod, Massachusetts U.S.A.
Posts: 19
Thanks: 17
Thanked 0 Times in 0 Posts
Rep Power: 0
Tyannt is on a distinguished road

Default

Appreciate the replies guys; wondered if this was some home made mod!



Is this done by changing to some aftermarket prop housing? Asking in case i have reason
to return to original...


Thanks

Last edited by Tyannt; 10-13-2019 at 10:21 AM. Reason: add info
Tyannt is online now   Reply With Quote
Old 10-13-2019, 07:29 PM   #6
karzrus
Diplomat
 
karzrus's Avatar
 
Join Date: Sep 2008
Location: Edmonton
Age: 58
Posts: 1,833
Thanks: 549
Thanked 1,407 Times in 779 Posts
Rep Power: 170
karzrus has a brilliant future
karzrus has a brilliant futurekarzrus has a brilliant future
Model Owned: 08 Pulsare 2100br/250xs

Default

Bobs machine shop sells kits. If you have the ability you can install yourself or have a shop do it. You need to aluminum weld the new nose cone on, smooth out the work, install the plumbing hoses.
Some may try to duplicate the job without the kit but that would be a big PITA.

Without examining the work it might be pretty hard to tell how well the job was done.
karzrus is offline   Reply With Quote
Old 10-13-2019, 09:54 PM   #7
merc245
Senator
 
merc245's Avatar
 
Join Date: Dec 2003
Location: brownstown, mi. USA
Age: 56
Posts: 3,688
Blog Entries: 2
Thanks: 114
Thanked 1,812 Times in 800 Posts
Rep Power: 250
merc245 has a reputation beyond repute
merc245 has a reputation beyond reputemerc245 has a reputation beyond reputemerc245 has a reputation beyond reputemerc245 has a reputation beyond reputemerc245 has a reputation beyond reputemerc245 has a reputation beyond reputemerc245 has a reputation beyond repute
Model Owned: 89 sportfire, 92 starflite, 00 24ZT

Default

I had a first yr CLE lower, there was two intake holes in front large enough to place my pinky tip in. The problem was it would suck seaweed up, the finer and thready seaweed. Pieces small as finger nails would work its way up to the inspection plates creating cooling problems. I was forever jumping in the water (no beaches) to pull the inspection plate and slide my coat hanger button hook up to clean out the passages. Some times in 2 footers.
Mercury quickly changed the design and put 5 smaller holes up front. The Drag racers say the 2 hole lower was just a little faster then the updated CLE.
Good Luck with your project!
merc245 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Water intake holes boatman4021 Props, Setups & Rigging 4 05-04-2011 10:47 PM
Merc outboard intake question.... fbpd227 Outboard Technical Discussion 9 07-08-2010 06:47 AM
Water intake scoops.... fbpd227 Engine Technical Discussion 4 05-05-2010 08:24 PM
Winterizing a 250 xs claupie Outboard Technical Discussion 31 10-27-2009 08:18 AM
Oil Leaking from water intake. agood1 Outboard Technical Discussion 8 05-16-2007 02:05 PM


All times are GMT -4. The time now is 09:30 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2002-2019 Checkmate-Boats.com & Whitecap Enterprises Corp. All Rights Reserved.
Images & Content are Copyright material and may not used without prior written permission.