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Offline fredvance

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exhaust ??
« on: July 20, 2010, 05:58:22 PM »
Header #1 has 1 3/4" primary tubes total length of haed pipes and straight collector is 45". Header #2 has 1 7/8" primary tubes the collector is a narrow taper megaphone. If I make the total length the same on #2 as on #1  will my HP range be about the same? Lower? Higher or what.

  Fred
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WORLDS FASTEST PRODUCTION MOTORCYCLE 213.470
Vance&Forstall Racing
WOS 2011 235+MPH
Engine by Knecum, Tuned by Johnny Cheese.
Sponsers Catalyst Composites, Johnny Cheese Perf, Knecum Racing Engines, Murray Headers, Carpenter Racing

Offline 1212FBGS

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Re: exhaust ??
« Reply #1 on: July 20, 2010, 07:43:07 PM »
are these on the same vehicle?  :-D
kent
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Offline fredvance

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Re: exhaust ??
« Reply #2 on: July 20, 2010, 07:47:49 PM »
same bike different motor. :-D A little more compression, same cams and head.
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WORLDS FASTEST PRODUCTION MOTORCYCLE 213.470
Vance&Forstall Racing
WOS 2011 235+MPH
Engine by Knecum, Tuned by Johnny Cheese.
Sponsers Catalyst Composites, Johnny Cheese Perf, Knecum Racing Engines, Murray Headers, Carpenter Racing

Offline V8Pinto

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Re: exhaust ??
« Reply #3 on: July 20, 2010, 07:48:50 PM »
Fred is your bike still at Suicycle?
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Shane
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Hayabusa on the brain
Twin-Turbo F150 4x4

Offline 1212FBGS

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Re: exhaust ??
« Reply #4 on: July 20, 2010, 08:06:09 PM »
more info.... displacement? cam lobe centers?
kent
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Offline fredvance

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Re: exhaust ??
« Reply #5 on: July 20, 2010, 08:43:30 PM »
1350, 110-112
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WORLDS FASTEST PRODUCTION MOTORCYCLE 213.470
Vance&Forstall Racing
WOS 2011 235+MPH
Engine by Knecum, Tuned by Johnny Cheese.
Sponsers Catalyst Composites, Johnny Cheese Perf, Knecum Racing Engines, Murray Headers, Carpenter Racing

Offline fredvance

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Re: exhaust ??
« Reply #6 on: July 20, 2010, 08:44:50 PM »
Shane, same bike. It has been too good to me to even think about anything else.

  Fred
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WORLDS FASTEST PRODUCTION MOTORCYCLE 213.470
Vance&Forstall Racing
WOS 2011 235+MPH
Engine by Knecum, Tuned by Johnny Cheese.
Sponsers Catalyst Composites, Johnny Cheese Perf, Knecum Racing Engines, Murray Headers, Carpenter Racing

Offline 1212FBGS

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Re: exhaust ??
« Reply #7 on: July 20, 2010, 10:18:02 PM »
fred i take it 110 on the intake....pretty tight numbers.... i would stay with the smaller pipe...
kent
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