Preformance Exhaust
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flinthills76
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Preformance Exhaust
Will performance exhaust give better mph? I'm new to upgrading my 1989 Honda Elite.
- scooterwerx
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flinthills76
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- Wheelman-111
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Staring into the Abyss
Greetings:
Getting a new pipe is the edge of a deep gorge with a slippery slope. Pipe alone won't do much and likely to cost over $100, even new.
If you want a little more pre-formance from your scooter but don't want to blow your beer budget, I suggest you consider a Keli or OkO variator for $40-$60. It will improve your low midrange nicely and buys 4-5 MPH on top with no other mods.
If the air filter, Carb, Intake mani, reeds, ports, & bore are all improved, the stock pipe certainly can become the limiting factor preventing higher RPM. Then you'll need a pipe. Until then just consider drilling a baffle or two if you can live with a bit more noise.
Getting a new pipe is the edge of a deep gorge with a slippery slope. Pipe alone won't do much and likely to cost over $100, even new.
If you want a little more pre-formance from your scooter but don't want to blow your beer budget, I suggest you consider a Keli or OkO variator for $40-$60. It will improve your low midrange nicely and buys 4-5 MPH on top with no other mods.
If the air filter, Carb, Intake mani, reeds, ports, & bore are all improved, the stock pipe certainly can become the limiting factor preventing higher RPM. Then you'll need a pipe. Until then just consider drilling a baffle or two if you can live with a bit more noise.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
- scooterwerx
- Elite

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- Joined: Tue Oct 07, 2008 11:43 pm
- Location: redlands, ca
- scooterwerx
- Elite

- Posts: 892
- Joined: Tue Oct 07, 2008 11:43 pm
- Location: redlands, ca
- scooterwerx
- Elite

- Posts: 892
- Joined: Tue Oct 07, 2008 11:43 pm
- Location: redlands, ca
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flinthills76
- Noob

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- Joined: Fri Apr 24, 2009 2:26 pm
if you know how to port a cylinder that and mill the head a little to increase compression.you can also put a taller tire for a longer roll out so its like dropping a gear size in the back.I think tire size is 2.50x10 on the elite e so go to a 3.00x10 in the rear.should give you about 2-3mph on top.
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Thanks to my sponsors
Nos Energy Drinks,themopedcompany.com,nwautoevents.com,Cycle Gear
90 honda dio sp 72cc
87 elite 50 s with 86cc watercooled mini stroke
87 elite 50 race bike mhr 72cc
91 yamaha tzr 250r
- Wheelman-111
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Gain of 2.01 MPH If:
Greetings:
If the 3" fits, I calculate a theoretical gain of 2.01 MPH if you can achieve the same peak RPM. This is based on a current top speed of 30. It's 6.7 % bigger than a 2.5".
A 44mm bore and 37.5mm stroke yields a displacement just under 58 cc.
If the 3" fits, I calculate a theoretical gain of 2.01 MPH if you can achieve the same peak RPM. This is based on a current top speed of 30. It's 6.7 % bigger than a 2.5".
A 44mm bore and 37.5mm stroke yields a displacement just under 58 cc.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
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flinthills76
- Noob

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- Joined: Fri Apr 24, 2009 2:26 pm
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flinthills76
- Noob

- Posts: 19
- Joined: Fri Apr 24, 2009 2:26 pm
- scooterwerx
- Elite

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