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Old 20 March 2006, 09:14   #1
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Country: UK - England
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Chipping a Suzuki 140HP???

Can anyone tell me whether it's possible to re-map or retune a 140HP Suzuki (four stroke) to produce more power.

I know there's lots of places that remap ECU's for cars... is there anyone who does this for outboards.

Regards

Mark
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Old 20 March 2006, 11:39   #2
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I think you may have problems as at 140HP this engine is being pushed & is going to be sold as a 135HP with the new 150HP coming out!
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Old 20 March 2006, 12:17   #3
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Quote:
Originally Posted by Nick Hearne
I think you may have problems as at 140HP this engine is being pushed & is going to be sold as a 135HP with the new 150HP coming out!
According to Roycruse who runs a 140 Suzook, they actually put out 127hp.
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Old 20 March 2006, 14:06   #4
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Hell fire... no wonder she's not getting past 50MPH.

The max engine weight is 195kg / 429lbs for my boat....

What other options are there to perk her up a little?

Lets presume that all will be well at say 205kg.... I think the 150 hp suzuki is heavier than that. Other makes anyone?????

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Mark
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Old 20 March 2006, 14:11   #5
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Im only relaying what i heard - i cant remember who said it but someone aparently had "official" info that the DF140 had been dyno'ed at 127.

I'd still recommend one though - reliable, quiet, efficient, light - im certainly not crying over 13HP if indeed the reports are true.

Other people have said that the engine will be rebadged at 130 or 135 but its all hear say at the moment - they have not done it so far...
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Old 20 March 2006, 14:11   #6
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evinrude e-tec 150/175/200 comes in at 194 kg
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Old 20 March 2006, 14:12   #7
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Quote:
Originally Posted by Mrdeli
no wonder she's not getting past 50MPH.
What Prop are you using and what RPM are you at when you reach 50mph ???
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Old 20 March 2006, 14:17   #8
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With 2 up, I'm hitting an indicated 6300 rpm (i think top end is meant to be 6200) and that using a standard aluminium 14 x 21 prop. It's just touching 50MPH. Any suggestions?
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Old 20 March 2006, 14:21   #9
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Suzuki 14 X 22 stainless prop will get you another 2 or 3 mph - you might also get away with a solas titan HR3 13 7/8 X 23 for an extra 5 mph

but you will start to loose revs and speed when you load up so i would only recomend that if 2 up is your normal load...
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Old 20 March 2006, 14:38   #10
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Be careful with over-propping, I've been there. You'll end up with a bit more top end (which is used rarely) at the sacrifice of pull out and general performance. I'd stick with the 21" or 22" max. You could end up with a load of friends in the boat and not being able to get it planing.
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