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#1
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Most motors run like crap at idle speed or trolling if the Tstats have been removed.
If you haven't done the water pump in a while, also plan to do it while you got the motor down for repairs. I didn't remember using sealer when I replaced mine. Permatex has always been my favorite. Oh, don't forget the Anti Seize!
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'75 Cuddy with '00 Johnson Ocean Pro 150 horse Benny Last edited by tsubaki; 09-04-2009 at 06:00 PM. |
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#2
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ours runs great at idle and trolling speed so no probs there. And as far as paying for it eventually rob had an old 115 with bypassed stats and ran it for thousands of hours and had no problems.. so idk i just bypassed mine.
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1979 V-20 cuddy 1986 yamaha 200 |
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#3
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On some of the newer and older ones with elec fuel injection and sensors the eng temp determined how much fuel was injected into the cyl's, without the t stats the computer may overload or not give the eng enough fuel into the cyl's and either burn the cyl's up and seize the motor or flood the rings and wash the cyl walls and you'll eventually loose compression sooner than expected by the manufacture's history for the motor. You may not get max hp out of the motor.
Just my 2 cents worth
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Tis better to be quiet and thought a fool than open your mouth and prove it!! 1991 V-20 cuddy I/O 350 volvo duo prop, 1998 15ft Grumman 9.9 Johnson
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#4
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yeah i got some good old fashion carbs..
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1979 V-20 cuddy 1986 yamaha 200 |
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#5
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One of the biggest killers of 2 stroke outboards is carbon build-up, and running them cold is the biggest contributor to carbon build up there is. Some engines will live, but many will die a slow painful death until they eventually stick a piston form sticking rings or score a cylinder wall. I can't tell you how many times somebody has brought an engine to me complaining of how it idles or pours out black soot from the exhaust and come to find out it was the owners removing the t-stat that caused it. And what many don't think about is the T-stat is a restricto that is needed to reduce coolant flow and to allow the water to absorb engine heat rather than just pass through without absorbing heat. I've seen more engines overheat from no t-stat than I have overheat because of a bad one. And many people never think about a T-stat when doing there maintence, but it is a maintence item that needs to be replaced periodically depending upon useage.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD ![]() AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 |
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#6
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My thermostats are still in there they are just open forever.
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1979 V-20 cuddy 1986 yamaha 200 |
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#7
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I just replaced mine. After it warmed up it idles better than ever. After 15 minutes or so on the muffs you can still stick your hand on top of the head for about 30 seconds or so. Monday I'll take it for a ride to be sure but I'm confident that was the problem..........
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1974 Wellcraft V-20 Center Console 1999 Mercury 150 HP Bluewater 1975 Wellcraft V-17 1977 Evinrude 70 HP Restoration Thread http://forums.iboats.com/showthread.php?t=404584 Enfield Connecticut Civil War Veterans Graves and History Pages http://enfieldwargraves.smugmug.com My companion book I authored http://www.blurb.com/books/1137672 |
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