Carpenter 240 dyno question

[Dr.D]

So 207hp and 166 torque really needs a good tune.

So a guy is selling a Rocket that supposedly has a 240 kit on it making 207? Obviously something is wrong. I could understand 10 hp off the advertised number but that much short is a problem. Find the details of the build and tune.

 

[scot in exile]

Dave does your bike turn 9000 rpm to get that hp?

Hit it at 8000rpm

 

[Tbone]

The bike and dyno graph

 

[Dr.D]

The bike and dyno graph

That is very close to the numbers I'm getting from pistons and cams from Neville Lush running a Viking pipe. i would have hope for more out of a "240" kit.

 

[scot in exile]

Looking like it is the 210 kit not the 240, on a side note drop the rumble seat and you will pick up another 100hp imho the rumble seat is the ugliest seat ever designed for the Rocket.

 

[warp9.9]

So who modified and possibly choked down the Carpenter exhaust ?????

@scot in exile surely you see it!!!!!

 

[scot in exile]

Just looked at it on my comp(phone sucks for pictures) talking about where it enters the megaphone or is just the picture????? if it is restricted at that point it would account for the low numbers.

 

[Neville Lush]

It needs about 8 hp worth of fuel for a start. Mixture is very lean . Then change dyno setting to std instead of sae. Now you're up to 218-220. Add 7 to 10 for race fuel, add 5 for taking off air filters. Pretty close to "advertised" 240.

 

[warp9.9]

Just looked at it on my comp(phone sucks for pictures) talking about where it enters the megaphone or is just the picture????? if it is restricted at that point it would account for the low numbers.

Nope

It needs about 8 hp worth of fuel for a start. Mixture is very lean . Then change dyno setting to std instead of sae. Now you're up to 218-220. Add 7 to 10 for race fuel, add 5 for taking off air filters. Pretty close to "advertised" 240.

If we look closely at the carpenter pipe it looks like somone welded the little header flanges of the OEM pipe to the exhaust. Where is the big ugly aluminum manifold and the high horsepower springs ? Or are we restricting something here ?

 

[Ishrub]