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mwilson
Joined: 08 Feb 2007
Posts: 109
City/Region: missoula
State or Province: MT
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: STORMY
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 Posted: Fri Apr 13, 2007 12:15 am Post subject: convert honda 40 to 50 hp |
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I recently purchased Liberty Call from Doug, great boat. I'm just waiting for more time to use it. I took it out for a test run in Wa with Doug and ran great with the twin 40's. As I brought the boat back to Mt Ele 3500 feet, the first run I noticed I lost about 500 RPM off the top I kinda expected that. It would be nice to get it back.
In speaking to a local honda dealer I asked the difference between the 40 and 50 as they arr the same displacment and weight. the dealer told me the only difference is a restrictor plate between the carb and manifold.
Does anyone know if this is accurate? I know Honda probably isn't willing to divulge this info. But it would be nice to be able to add 20 hp without having to repower. I suspect theres more to it than that. So all you knowledgeable doryites what the skinny? Anybody know the real difference between the 40 and 50 hp? mbw |
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Sea Wolf
Joined: 01 Nov 2003
Posts: 8650
City/Region: Redding
State or Province: CA
C-Dory Year: 1987
C-Dory Model: 22 Cruiser
Vessel Name: Sea Wolf
Photos: Sea Wolf
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| Posted: Fri Apr 13, 2007 1:11 am Post subject: |
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mbw-
If you don't get an authoritive answer, ask Les Lampman, one of your members who is a co-ower of EQ Marine and a Honda Dealer on Whidby Island.
Send him an email at the link above, as he's usually too busy to monitor this site fully.
If you do, let us know what you find out!
Joe.
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Sea Wolf, C-Brat #31
Lake Shasta, California
  
"Most of my money I spent on boats and women. The rest I squandered'. " -Annonymous
Last edited by Sea Wolf on Fri Apr 13, 2007 12:06 pm; edited 1 time in total |
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C-Hawk
Joined: 02 Nov 2003
Posts: 2146
City/Region: Carpinteria / Channel Islands
State or Province: CA
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: C-Hawk
Photos: C-Hawk
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| Posted: Fri Apr 13, 2007 10:02 am Post subject: |
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Yes, be sure and let us know what you find out. I would be interested in the same. 
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Roger
2002- CD22- "Fishtales" returned to factory 2008
2008- CD22- "C-Hawk" Sold
KJ6VVB
A Brat I am, At sea I be
God is Great, Beer is Good.... and People are Crazy |
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B~C
Joined: 31 Oct 2003
Posts: 2861
City/Region: Bend
State or Province: OR
C-Dory Year: 1999
C-Dory Model: 22 Cruiser
Vessel Name: Blue~C
Photos: Blue~C
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| Posted: Fri Apr 13, 2007 10:21 am Post subject: |
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the service manual for our 1999 Hondas has different specs for the camshaft, valves, carb jetting and more. It looks like you would have to re jet the carbs, buy a new complete cylinder head and a CDI unit.
Les would have the definitave answer though, there aint nothing he doesn't know about these engines
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Ken
1999 22' boaterhome |
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mwilson
Joined: 08 Feb 2007
Posts: 109
City/Region: missoula
State or Province: MT
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: STORMY
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| Posted: Tue Apr 17, 2007 7:25 pm Post subject: |
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Thanks to Les, I at least found another Dealer that I cannot trust, at least the person I spoke with.
Turns out the year honda 40 hp I have has diferent heads than the 50 and the carbs are different as well, soooooo the hope to convert for me is not real, I'll look to reproping to help.
Thanks to you all for your help. michael |
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