153 kg & 85 Hp 696

[mattc7]

more cc's, compression, bigger valves & throttle bodies.

Sounds like the way to do it to me.

[Raux]

compression is pretty high already.
valves.. can't go bigger and get more power (per a noted Ducati engine builder)
throttle bodies are the same as on the 1100 so doubt that is needed but can be opened a mm or 2

could be stroked to the 803.
the port polish, cams and tuning should help alot.

[ungeheuer]

Engine mods: Ported, camtiming & mapped w RapidBike. Slipons & open airfilter.
65,83 Hp/62.88 Nm at start, 85.56/78.75 after, same bench.

Although I struggle to beleive you can get 20hp from the engine mods identified here.

20 HP, a 30% bump, with just porting, cam timing and a map? 

+1?

[greenmonster]

All info is from the owners writeup, incl engine mods.

What can I say, noone over here hardly believes i either!

The tuner has ported & modded Ducs f over 20 years, works w racing teams etc:
http://www.proservice.se/indexe.html  --> Dyno, scroll down you see the 696 chart here also.

My first Q to owner was what the tuner thought about the ports, maybe the secret?
He`s apparently climbing K2 again or something, answers will take a week or two.

[Kopfjager]

Although I struggle to beleive you can get 20hp from the engine mods identified here.
+1?

+1

[mattc7]

rapid bike doesn't even admit a 696 fitment, so this is interesting in multiple levels.  If there's 20hp to find in the 696, i'ld be very impressed.  I can't imagine getting that much with so little though

[Desmojet]

rapid bike doesn't even admit a 696 fitment, so this is interesting in multiple levels.  If there's 20hp to find in the 696, i'ld be very impressed.  I can't imagine getting that much with so little though

[Link]

compression is pretty high already.
valves.. can't go bigger and get more power (per a noted Ducati engine builder)
throttle bodies are the same as on the 1100 so doubt that is needed but can be opened a mm or 2

could be stroked to the 803.
the port polish, cams and tuning should help alot.

Yeah, I don't know the 696 well enough to know it's exact physical limits I'm just saying you cant get that much HP increase in a small motor with the mods listed if you could pump up a 696 to over 80 hp with a cam, port & polish you would be a rich man. Stroked to an 803 well that is no longer a 696 and with out bigger valves you still would prob. be shy of the claimed 85 hp. I'm not sure but I thought the 796 (a stroked 696) is only putting out about 5 more hp then the 696.

[hcomp]

An interesting question for everyone regarding the dyno graph, why does the torque and HP curve not cross at 5250rpm? 

[csp808]

An interesting question for everyone regarding the dyno graph, why does the torque and HP curve not cross at 5250rpm? 

That should be a given unles the rpms are measured metrically.

[greenmonster]

An interesting question for everyone regarding the dyno graph, why does the torque and HP curve not cross at 5250rpm?

From http://www.visi.com/~moperfserv/Torquething.htm :

The equation for calculating power from torque and RPM is; torque (in pounds-feet) times RPM divided by 5252.

Proservice uses Nm. All his graphs cross at same RPM. And something w graph resolution maybe,
I`m not sure about this.


Mailed tuner and asked if there were only the 3 mods done and what contributed the most.
Bit short answer: The whole picture decides it, the porting did the most of it.

So maybe it`s the old "It`s all in the head" again.
And knowledgeble mapping do make a difference.

[ungeheuer]

So maybe it`s the old "It`s all in the head" again.
And knowledgeble mapping do make a difference.

Nobody would deny that.  But 20hp?? 

Does it have a turbocharger? 

[hcomp]

That should be a given unles the rpms are measured metrically.

Wow, I wondered why my tach was off! Of course Metric RPM! I'm going to recalibrate my tach for Standard RPM does anyone know how to do this on a 696?

Now for the real question, at what RPM does NM cross HP?  I see the point, and I can understand it crossing at a higher RPM than Ft.lb. but does anyone know the constant?

[greenmonster]

One lb/feet torque is 1.35 Nm.
1.35 x 5250 = 7087.5
Seems pretty close to cross in the graph I posted, maybe it is that simple?

[battlecry]

That's about 122 hp/liter.  Same neighborhood as the Honda S2000.  Color me pretty impressed. 

Taking one of Ducati's highest Hp/disp bike and bumping it 20hp is a big deal.  Especially claiming no internal mods.

I do not believe the cooling system would cope well with rejecting the extra heat.  Let us know how long the engine lasts.