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904 on the dyno today
#341299 06/30/2009 4:31 PM
Joined: Jan 2005
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Learned Hand
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904 dynos are getting common around here or what?

After driving 70km in thunder and rain today i finally got to dyno the bike after installing the Wiseco 904.




Max HP: 68,74 Max Torque: 71,95 Nm = 53 ft/lbs


The setup for the bike now is:

Pipes, modified stock

Carbs, stock 145 /42, TBS Needles

AirBox bottom cut, no snorkels int/ext, K&N air filter


Bike is running rich in the midrange and that seams to be a common problem around here

I had a good talk with the dynoguy and have some ideas for improvment but i really want your suggestions so fire away!


Gooseman Bonneville America 904 Black/Silver Triumph Tiger 1050 Black Ducati Multistrada 1200s
Re: 904 on the dyno today
Gooseman #341300 06/30/2009 4:35 PM
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Worn Saddle
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Worn Saddle
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Looks good there Goose! Great job, now get out and put mega-miles on it!


A word to the wise is not necessary. It is the stupid ones who need the advice. Pat
Re: 904 on the dyno today
Dinqua #341301 06/30/2009 5:50 PM
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nice picture and numbers let's see what I'm gonna get this saturday from my dyno


Grzegorz ......55 cubic inches http://www.flickr.com/photos/25172906@N06/ 904WisecoTPUSAcamsTTPignitorgutted Airbox"breath"airIntakeKeihinCR-ScarbsBlackEpcoExhaustS/SwheelsPortedPolishedHead
Re: 904 on the dyno today
Grzegorz #341302 06/30/2009 5:59 PM
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Loquacious
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Adjustable needles like what comes in the dyno jet kit and D&D Performance Pro kit can adjust out that dip and get you some more power in the midrange.


Bob 2005 America, 904cc - sold. 2014 Trophy SE.
Re: 904 on the dyno today
Gooseman #341303 06/30/2009 6:46 PM
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Worn Saddle
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Quote:


Bike is running rich in the midrange and that seams to be a common problem around here

I had a good talk with the dynoguy and have some ideas for improvment but i really want your suggestions so fire away!




I'm thinking the chart shows the jetting to be spot on but the TBS needle's more aggressive taper is producing the fat spot beginning at 4K. Try your stock needle now and see how she flies...


A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)
Re: 904 on the dyno today
oldroadie #341304 07/01/2009 3:27 AM
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Ramsound & Oldrodie,

Thanks for the comments, just in line with what the dynoguy said, jetting was spot on but Needle needs to change..

He highly recomended the Dynojet-kit, not trying to sell me one, just pointed out that he had possitive experiences from other bikes.

Mainly for that it´s a better Needle with the kit (adjustable)

I will try putting the stock needle back first and se what happens


Gooseman Bonneville America 904 Black/Silver Triumph Tiger 1050 Black Ducati Multistrada 1200s

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