Dyno chart - 900SL - FCR41s - Sil Motor

ali · 23-Jul-2005, 14:07

Hi All,

Just got the SL back from PDQ and thought you might like to browse the chart. Top end is now 78.4bhp, and she's making a healthy 60ft-lbs of torque. What surpised me was the incredible smoothness of the curve. I know the software does a certain amount, but it's definitely a very nice linear delivery.

Overall, I think the carbs are probably worth about 4bhp. My engine should be good for 72 in standard trim, 74 with the cans, so 78.4 with the carbs sounds about right.

Of course the graph is only half the story, the real news is in the injector pumps which make a real difference to the first half-second after winding on the power. Why they aren't fitted to every carb is completely beyond me.

More after I've given her some berries in Narfuk next weekend.

Cheers,

ali

Rob B · 23-Jul-2005, 14:17

Ali,

Looks good, I had flatties on a Suzuki motor, I know exactly what you mean. Lots of nice rattles to match the clutch too...

phil_h · 23-Jul-2005, 14:29

Here are the curves from my FE with Silmoto's and Dynojet kit in std carbs for a comparison

Phil

ali · 23-Jul-2005, 14:41

Quote:

Originally posted by phil_h
Here are the curves from my FE with Silmoto's and Dynojet kit in std carbs for a comparison

Phil

Cheers Phil. That's pretty much as expected, 4.5bhp and a few more revs at the top end. I'm surprised the FE was only making 72 before the re-jetting. Goes to show that slip-ons really do need re-jetting to get the best out of them.

Cheers,

Ali

Rob B · 23-Jul-2005, 14:53

Ali,

If you ever what to play with jetting on the track/road, drop me a line, I have a large selection (even a huge hole conversion kit for methanol) of jets and bits.

Rgds, Rob

Iconic944ss · 25-Jul-2005, 09:59

You boys and your toys

Ali - nice one - if you ever get tired of them carbs, you have a buyer

Frank

FiscusFish · 26-Jul-2005, 22:27

Quote:

Originally posted by Iconic944ss
You boys and your toys

Ali - nice one - if you ever get tired of them carbs, you have a buyer

Frank

Join the bloody queue......

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23-Jul-2005, 14:17	#2
Rob B Registered Forum User Ducati Meccanica Posts: 2,263 Join Date: Aug 2003 Location: Wimbourne, Dorset Mood: I'm so happyyyyyyyyyyyy Ali, Looks good, I had flatties on a Suzuki motor, I know exactly what you mean. Lots of nice rattles to match the clutch too... Reply

23-Jul-2005, 14:29	#3
phil_h Registered Forum User Ducati Meccanica Posts: 2,527 Join Date: Sep 2004 Location: Pulborough, W. Sussex Mood: 900,900,851,750,750,750, 600,600,450,350,350,250 Here are the curves from my FE with Silmoto's and Dynojet kit in std carbs for a comparison Phil Reply

23-Jul-2005, 14:53	#5
Rob B Registered Forum User Ducati Meccanica Posts: 2,263 Join Date: Aug 2003 Location: Wimbourne, Dorset Mood: I'm so happyyyyyyyyyyyy Ali, If you ever what to play with jetting on the track/road, drop me a line, I have a large selection (even a huge hole conversion kit for methanol) of jets and bits. Rgds, Rob Reply

25-Jul-2005, 09:59	#6
Iconic944ss Registered Forum User WSB Hero Bikes: 1993 - 944SS & Aprilia Falco Posts: 7,795 Join Date: Oct 2002 Location: north east You boys and your toys Ali - nice one - if you ever get tired of them carbs, you have a buyer Frank Reply