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Owner: Daschicken
Cibbie: 1988 Honda CBR 250R
Displacement: 0.249 L
Fuel type: gasoline
Transmission: manual
Curb weight: 355 lbs
Coefficient of drag: 0
Frontal area: 0 sq.ft.
Description: 1988 CBR 250R. 4 cylinder 250cc, 17000+ rpm.Currently in process of mild restoration: New fairings, new paint on rims. One of very few in America.

Current gearing 17/51
Stock gearing: 17/54
EPA combined rating set to average of MC19s and MC22s on fuelly.

ODO and speedo may be off and inflating mileage numbers, but have not confirmed yet.

Planning a frontal area and coastdown test to determine Cd and CdA.

I am aiming for a lifetime mpg of around 60, that sounds reasonable.
Build Thread: Cibbie-1988 CBR 250R
Current Mods: Aero: 1/3 Radiator block

Drivetrain: Aftermarket muffler (bringing down mileage), 90 main jet (stock is 85), 1 5/8 turns out for pilot jet(stock setting instead of richer), 38 PSI front, 41 PSI rear, all four spark plugs indexed to intake valves, 51T rear sprocket (54T stock)

Electrical: None

Planned Mods: Aero: Front radiator ducting and partial rear ducting, Foam blocks to cover front "air intakes", front and rear fenders from mc14/mc17, belly pan to cover exhaust and deflect air from rear tire

Drivetrain: Adjust idle speed from 1500 rpm to 1200 when engine is warm, extra brake drag reduction clips(or some to begin with...), Synchronize the FOUR carburetors, make a set of headers that aren't bigger than a LITER BIKE'S!

Electrical: Clean up grounding points, lighter battery, dank white LED underglow, ecliptech LED taillights

Riding style: Limit screaming to when it will be productive

Misc mods: Aluminum subframe, drill out less important bolts for weight reduction, bro,
Official Fuel Economy Ratings
EPA city 0 mpg(US)
EPA highway 0 mpg(US)
EPA combined 49.7 mpg(US)

Actual Fuel Economy Performance
Lifetime 51.73 mpg(US)
Last 3 tanks 57.7 mpg(US)
90 days 56.37 mpg(US)
View Fuel Log
Last updated: Apr 22, 2018

(Created: 2015-06-07 22:11:04 / Modified: 2018-04-22 13:53:53)

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