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Old 07-11-2013, 10:20 PM   #1 (permalink)
naturalextraction
naturalextraction
 
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Join Date: Mar 2009
Location: New Mexico
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Turbo SV650s better mileage and power

I waited awhile before posting here as I now have just about 10k miles on it. I've worked out all the bugs for some time now and have done some decent mileage runs.
I built this system for a few reasons:
1. No one in America, but one person in Germany, has turbo charged an SV650 Mostly due to the much propagated scenario of the cranks breaking. I want to prove that a good build with fail safes installed and limitations will provide a fun, powerful, economical bike.
2. To incorporate some aspects from another build in relation to fuel consumption which has increased in the area of 12-15% maintaining my horrible driving habits.
3. That the results are accomplished through sound engineering and not incorporating any pseudoscience falsehoods often touted on forums.

Yes there is always a limit to any mechanical function by avoiding over stressing of rotational parts, limiting mass, not exceeding rotational speed, limiting pressure and the list goes on. But quantifying limiting factors and building within those specs will and does work. To date I have not modified anything to the motor on any level. I did go colder plugs was all. I will after my 10K install a lightened stator. I may incorporate some other electrical regeneration thoughts to try...or not. This is my daily driver and use it literally 6 or 7 days a week. Hence the miles.
Mileage varies of course due to ambient temperatures, wind, hills of course and where I get the fuel. Many stations have different blends that can vary the consumption for the vehicle.

That's pretty much it. Turbo's can be installed to make just power and consume gobs of fuel or installed to increase adiabatic efficiencies, Volumetric efficiencies with less fuel consumption than stock if done correctly.

It's been fun to change power levels on command, have Liter bike performance (dead on to TLS1000, Aprila Falco). Ultimately my average consumption is lower than ever before. My best run is 61mpg with quite a few times in 4lbs of boost. I max at 7lbs if I adjust for such. The down side is this is carbureted. The only blow through I've ever done. I've always used EFI which would be much better for programming a much better consumption. My other bike does considerably better. But it's a different animal all together. Btw, I installed this back in December as the bike was at 70K+ miles.


Last edited by naturalextraction; 07-11-2013 at 10:41 PM..
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