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#1
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The guy I recently took it to seems to have it running pretty well now, he changed the timer base and that seems to have solved the intermittent lack of power problem I was having . I took it out yesterday and it ran very well. only thing was the mechanic for some reason removed the shift cable anchoring bolt where it mounts under the cowel and when I pulled into the boat ramp I had no reverse, that was a lot of fun !! I am however very interested in finding out about that conversion.
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1988 Grady White Seafarer Yamaha 250 ox66 on a bracket |
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#2
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Quote:
I had to swap the carbs over to a set of 86(you can also run 87's, but you have to be careful as there are 2 different sets for 87), and drop the timing back to 18 degrees. Since the 85 140 uses a unique reed cage, it fows slightly different, and you will probably have to rejet accordingly. The cheapest thing to do is to set the timing at 18 and run the small carbs. It drops it back to a 120 instead of 140, but the lower timing is alot easier on the engine. Most shops set the timing at 18 because ONLY the 85 140 ran the extra timing(I don't think the 300 for 85 ran more than 18), and many manuals don't list it.
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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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#3
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Boy to I wish I lived within trailering distance of Zepherhills and Goose creek.
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1988 Grady White Seafarer Yamaha 250 ox66 on a bracket |
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#4
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Quote:
No kidding!
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1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20 |
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#5
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op, take a pic of your engine and post it here. It's really obvious if it's a looper or a cross flow.
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#6
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well I just checked it and its definitely a solid block between the heads so a Looper it is ! and I see that on top of the flywheel its marked at 18 degrees in red.
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1988 Grady White Seafarer Yamaha 250 ox66 on a bracket |
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#7
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just came back from taking out my Looper, she
ran really well. only thing was my tac red 4800 a WOT. Should I be thinking re prop?
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1988 Grady White Seafarer Yamaha 250 ox66 on a bracket |
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#8
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Get a known good tach and make sure yours is correct first. From your previous posts it sounds like your timing got set to 18 instead of 22 which would derate you to 120HP and cause your RPM's to be lower. I would stick with the 18 degrees of timing as it is ALOT safer on your engine, and reprop it to turn up to 5500-5600 or so at WOT.
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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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