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 torque between the 02-07 models
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Joined: Jul 2007
Posts: 32
Greenhorn
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OP
Greenhorn
Joined: Jul 2007
Posts: 32 |
are there any difference in HP and torque between the 02-07 models ?
i have a 07 and in the papers it says 55hp and 69 nm
and when i surf the net i find that the older models have 61 hp an´d 69 nm
Last edited by moe; 08/28/2007 6:07 AM.
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Re: torque between the 02-07 models
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Joined: Nov 2005
Posts: 999
3/4 Throttle
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3/4 Throttle
Joined: Nov 2005
Posts: 999 |
This depends on what you are riding the 790 motor or the 865 motor so yes there would be a difference
Last edited by moe; 08/28/2007 6:08 AM.
The invisible One 
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Re: torque between the 02-07 models
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Joined: Feb 2005
Posts: 691
Adjunct
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Adjunct
Joined: Feb 2005
Posts: 691 |
The 790cc (older models) have more hp and less torque than the 865cc (newer models). Major difference in the cams.
--Tom
02 TBA; 130 mains; TBS; Nology Coils&Wires;Unifilter/opened Airbox; -AI/snorkels; -2 baffles;Progressive 440s & Springs
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Re: HP between the 02-07 models
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Joined: Jul 2007
Posts: 32
Greenhorn
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OP
Greenhorn
Joined: Jul 2007
Posts: 32 |
Quote:
This depends on what you are riding the 790 motor or the 865 motor so yes there would be a difference
i have the 865 engine but i have been told that it has less HP than the 790 engine...can it be right ?
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Re: torque between the 02-07 models
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Joined: Jul 2007
Posts: 32
Greenhorn
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OP
Greenhorn
Joined: Jul 2007
Posts: 32 |
Quote:
The 790cc (older models) have more hp and less torque than the 865cc (newer models). Major difference in the cams.
do you have the spec ? just want know how big the differance is...
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Re: torque between the 02-07 models
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Joined: Feb 2007
Posts: 23,227 Likes: 62
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,227 Likes: 62 |
Manual says the 790 has 62PS @ 7400 RPM and 60 NM torque @ 3500 RPM
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: torque between the 02-07 models
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Joined: Jul 2007
Posts: 32
Greenhorn
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OP
Greenhorn
Joined: Jul 2007
Posts: 32 |
ok.. thx my 865 has 55 ps @ 6750 rpm and 69 nm torque @4800 rpm
Last edited by Cyco; 08/30/2007 4:46 AM.
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Re: torque between the 02-07 models
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Joined: Jan 2005
Posts: 8,639 Likes: 3
Old Hand
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Old Hand
Joined: Jan 2005
Posts: 8,639 Likes: 3 |
The big difference that makes the 865 produce less power and peak at a much lower speed is that the exhaust valves close at BDC. The Model T Ford had more radical valve timing. This is good for meeting emissions requirements without going to fuel injection, but the engine will not respond well to any attempts at increasing power until the valve timing is improved.
Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python
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 Re: torque between the 02-07 models
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Joined: Jun 2006
Posts: 2,626
Loquacious
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Loquacious
Joined: Jun 2006
Posts: 2,626 |
Quote:
The big difference that makes the 865 produce less power and peak at a much lower speed is that the exhaust valves close at BDC. The Model T Ford had more radical valve timing. This is good for meeting emissions requirements without going to fuel injection, but the engine will not respond well to any attempts at increasing power until the valve timing is improved.
I saw the section on Dinqua's site about replacing the exhaust cam with the intake cam from a 790. What kind of gains does this give?
Steelheart- '03 Speedmaster Black/Yellow
The Hayabusa Killa
16" Shorties/140 mains/Airbox drilled
Procom CDI
"There is no cure for Celibacy. But we can treat the symptoms."
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