Where is my horsepower?

[George S]

Get/borrow an infrared thermometer. If one cylinder is not firing, running the bike, and measuring the header temp close to the head will quickly reveal if one is heating up while the other is not.

Or you could use you hand - just be careful. Either way do this checking from start up when the bike was cold before.

Checking for spark is easy to do too. Couple ways to go about that - on my 900 has the wires are easy to get to I'd just pull one and try to fire it up and reverse. If it fires and runs like it has been in one config and not the other... well you've got no spark. There's various spark test tools one can buy w/o much cost - or the old pull the plug, ground it on the head and hit the starter method...

aaahhh, so.... both cylinders ARE firing. I have had my hands very close to each of the headers checking for exhaust leaks after removing/replacing my exhaust. and those pipes were VERY hot within seconds.

[George S]

what are people's opinions on replacement clutch kits? I can get a barnett kit for about $180. ducati clutch kit is about $380. any experience with barnett clutch plates?

[ducatigirl100]

what are people's opinions on replacement clutch kits? I can get a barnett kit for about $180. ducati clutch kit is about $380. any experience with barnett clutch plates?

got barnet clutch plates  work's great       

do you have a open clutch or a  clutch cover ?

[ducpainter]

Not a fan of Barnett for dry clutched Ducs.

[ducatigirl100]

Not a fan of Barnett for dry clutched Ducs.

Is there another option besides the OEM and the barnet ?

[George S]

Ducatigirl, my clutch is completely open. Gives the bike more of that... how do you say???... Mad Max look! LMFAO

Ducpainter.... why don't you like Barnett?

[ducpainter]

Ducatigirl, my clutch is completely open. Gives the bike more of that... how do you say???... Mad Max look! LMFAO

Ducpainter.... why don't you like Barnett?

They don't seem to hold up in open cover situations, and generally don't last anywhere near as long as OEM.

There isn't any real savings.

They work great in wet clutches.

[ducatigirl100]

im sorry but his description didnt say anything about his clutch slipping... it sounds more like a lack of power than a lack of friction/traction.

friction\  traction is exactly the issue here ...  if the clutch plate's are all worn down it will feel like the bike as absolutely no power.... it feels like your in neutral and you turn the throttle and the rpm go up but the bike doesn't take any speed ....      

surely looks like it though

Doe's the symptom's appeared gradually over a month or two ??

[Howie]

If your engine is increasing in RPM without the appropriate increase in road speed the clutch is slipping.  This is most likely going to happen when you are going up hill in a high gear and add a lot of throttle.

[Roaduser]

friction\  traction is exactly the issue here ...  if the clutch plate's are all worn down it will feel like the bike as absolutely no power.... it feels like your in neutral and you turn the throttle and the rpm go up but the bike doesn't take any speed ....      

surely looks like it though

Doe's the symptom's appeared gradually over a month or two ??

if this was the case it wouldnt feel like a lack of power, a very different feeling to a slipping clutch. as howie illuded to the circumstances that this will appear under are different to that of a lack of power and i believe the symptoms would present very differently too. from my understanding the bike isnt reving out and going no where, its just not going any faster which points to a lack of power.

easily tested tho, if the op goes to a hill, puts his bike a gear higher than he really should and gives it a wrist full is it reving out and not accelerating or just bogging down?

[George S]

if this was the case it wouldnt feel like a lack of power, a very different feeling to a slipping clutch. as howie illuded to the circumstances that this will appear under are different to that of a lack of power and i believe the symptoms would present very differently too. from my understanding the bike isnt reving out and going no where, its just not going any faster which points to a lack of power.

easily tested tho, if the op goes to a hill, puts his bike a gear higher than he really should and gives it a wrist full is it reving out and not accelerating or just bogging down?

Yeah, a lot of possibilities. when the bike was maxed out though at it's top speed, the engine was only running b/t 5,000 and 6,000 rpm. still doesn't rule out the possibility of a worn out clutch. pretty easy to diagnose i suppose. I'll just mic the plates... hopefully the tolerances are in the service manual. I haven't looked yet. Does anyone know the minimum recommended thickness?

[ducpainter]

Yeah, a lot of possibilities. when the bike was maxed out though at it's top speed, the engine was only running b/t 5,000 and 6,000 rpm. still doesn't rule out the possibility of a worn out clutch. pretty easy to diagnose i suppose. I'll just mic the plates... hopefully the tolerances are in the service manual. I haven't looked yet. Does anyone know the minimum recommended thickness?

If the clutch was the limiting factor the bike would hit the rev limiter.

The clutch may be worn, but it isn't the cause of your problem.

[H-2 CHARLIE]

 do you have stock sprokets ?  if the gearing has ben changed it might be that .  my SS 750 F.I.  is 1 down in frt and 1 down in the rear .

[Roaduser]

do you have stock sprokets ?  if the gearing has ben changed it might be that .  my SS 750 F.I.  is 1 down in frt and 1 down in the rear .

id think a modern 4 valve ducati should easily push past 100 mph even with a 2 or 3 tooth gear change. i dont think this is a mechanical problem.

the op said he changed the fuel filter before this problem began. my money is on an instalation error with the pump/filter/hoses in or attached to the tank. check external to the tank first of coarse and then drain and go over what was worked on when you did the filter change. in particular, check for kinks or twists in the fuel lines and breather lines attached to the tank. check the charcoal cannister isnt full of fuel or something like that too.

good luck with it, hope its a simple fix!

[jaxduc]

..... lot of opinions here....
HEY have you checked your blinkers?
maybe you have a blinker fuse that has blown which causes the bike to not go faster than 100mph.
If that is the case, that is definitely the problem.
I had this same problem a few years back on a completely different bike.