Author Topic: Crossover Pipes - Upsweep  (Read 446 times)

Offline Groover

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Crossover Pipes - Upsweep
« on: September 30, 2022, 09:50:04 AM »
Trying to figure out which crossovers out there for Tonti bikes have the most upsweep. I think I've seen some here and there, but not sure what they are. Any suggestions on what to look for? Needing something with a more drastic upsweep than what comes with the Lemans 1000. Planning on using some straight pipes, but want to keep the upsweep angle of the pipes overall. As an alternative, maybe a header like this. Basically trying to accomplish this angle (this is a crop of cliffrod's new cx100) - as far as size go, I'd be matching it up to the LM4 headers but can make the slightly smaller work I think.



 
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
1980 Piaggio Vespa P125X
1980 Vespa Grande Moped
1980 Vespa SI Moped
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Offline Groover

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Re: Crossover Pipes - Upsweep
« Reply #1 on: October 01, 2022, 09:16:41 AM »
Best guess will do on this  :grin:
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
1980 Piaggio Vespa P125X
1980 Vespa Grande Moped
1980 Vespa SI Moped
http://scooteropolis.com/

Online Antietam Classic Cycle

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Re: Crossover Pipes - Upsweep
« Reply #2 on: October 01, 2022, 10:28:12 AM »
Looks like the 850 Le Mans, Le Mans II, CX100 has the most upward angle, but it still isn't much. Those BUB headers had a bit more. Wouldn't be hard to accomplish - cut and shut a stock crossover of your choice.
Charlie

Offline Groover

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Re: Crossover Pipes - Upsweep
« Reply #3 on: October 01, 2022, 10:48:12 AM »
Thanks Charlie, custom might be the way. Do you happen to know if the LM1 used 40mm?
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
1980 Piaggio Vespa P125X
1980 Vespa Grande Moped
1980 Vespa SI Moped
http://scooteropolis.com/

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Re: Crossover Pipes - Upsweep
« Reply #3 on: October 01, 2022, 10:48:12 AM »

Online Turin

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Re: Crossover Pipes - Upsweep
« Reply #4 on: October 01, 2022, 11:15:24 AM »

The BUBs I. The puc have the most upsweep before the mufflers that I can think of. I looked into this year's ago.
Charlie is spot on.
You can also call cone engineering and see what the can do. I'm a fan of their reverse megaphone mufflers.
1997 Daytona RS
1991 Cal III Big Valve Hotrod
1991 LeMans 1000
1987 LeMans SE Dave's Cycle Racer
1984 LeMans III
19?? Sidlow Guzzi
1974 850-T Sport
1969 A-series Ambassador
1996 Triumph Daytona 1200
1996 Triumph Daytona 900
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Offline Groover

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Re: Crossover Pipes - Upsweep
« Reply #5 on: October 01, 2022, 11:38:22 AM »
Ok, thanks again. Great suggestions
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
1980 Piaggio Vespa P125X
1980 Vespa Grande Moped
1980 Vespa SI Moped
http://scooteropolis.com/

 

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