Airesearch newest TA81 turbocharger
larger 17in³
compressor redlined
for 1750°F.
The
RAM Series VII
Inlet Scoop

is optimized for minimal aerodynamic drag at high
cruise speeds.
 
7505 Karl May Drive • Waco Regional Airport • P.O. Box 5219 • Waco, TX 76708
Phone: (254) 752-8381 • Fax: (254) 752-3307 • www.ramaircraft.com


ENGINES • PARTS • PROPELLERS • ACCESSORIES • STC'S
 
17 - CUSTOMER SERVICE
23 - CONTACT INFORMATION
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Performance - Cessna 414
RAM - Series VII

Primary Specifications
Cessna 414
RAM 414 VII
Engine Model: CMI - TSIO-520 TSIO-520-J TSIO-520-NB
Engine hp rating / TBO - hrs. 310 / 1400 335 / 1600
Takeoff M.P. @ 2700 rpm (ISA + 30° F) 36" 38"
Acceleration 0 to 100 mph (seconds) 25 19
Twin engine climb @ S.L. (fpm) @ new GW 1580 1900
Single engine climb @ S.L. (fpm) @ new GW 240 310
Cruise climb power (rpm @ MP) (ISA + 30° F) 2450 @ 31.5" 2500 @ 33.0"
Cruise climb S.L. to 23,000 ft. (minutes) 31 25
260 hp Cruise @ 23,000 ft. (ktas) / fuel/engine (gph) NA 223 @ 20.3
230 hp Cruise @ 23,000 ft. (ktas) / fuel/engine (gph) 206 @ 19.3 212 @ 17.9
200 hp Cruise @ 23,000 ft. (ktas) / fuel/engine (gph) 185 @ 16.5 190 @ 14.7
Landing wt. / Zero fuel wt. (lbs.) 6200 / 6165 6430 / 6165
Useful load increase (lbs.) NA +395
Gross weight / Ramp weight (lbs.) 6350 / NA 6765 / 6800
 
Performance is based on a mid CG with mid cabin and fuel weight on an average day. Performance should always be calculated per flight environment while referring to the Manufacturer’s Pilots Operating Handbook and applicable Flight Manual Supplements for the particular airplane. Aircraft Manufacturer’s Pilot Operating Handbooks and Aircraft Owner’s Manuals should always be available and adhered to by the aircraft Pilot in Command, including attention to applicable FAA approved Flight Manual Supplements and emergency procedures for each individual aircraft. Performance should vary from airplane to airplane, atmospheric day to atmospheric day, one gross weight and CG to another, and pilot to pilot.
 
Larger Turbo - Larger Intercooler - Improved Cooling
TA81 Airesearch Turbo: 17in³ Compressor - (vs. original 10in³)
Larger Intercooler - 140in³ - improved construction
RAM Intercooler Scoop - low profile - minimum shape drag
Additional cooling air exit - at wastegate access panel
Takeoff power - available through 25,000 ft.
RAM Series VII Intercooler Scoop
Other Turbochargers, Intercoolers and Intercooler Scoops

Cessna Factory Original Scoop

American Aviation Scoop
  • Cessna, American Aviation, and RAM’s 325hp Series IV and 335 hp Series VI use an Airesearch TH08A turbocharger utilizing a 10in³ compressor, redlined at 1650°F.
    •Cessna Intercooler is 105in³. AA’s Intercooler is 140in³. Both are found on Cessna 310 hp, RAM’s 325 hp Series IV, and RAM’s 335 hp Series VI.

Performance should vary from airplane to airplane, atmospheric day to atmospheric day, one gross weight and CG to another, and pilot to pilot.

 
 
RAM Aircraft, LP • 7505 Karl May Drive • P.O. Box 5219 • Waco, TX 76708
Phone: (254) 752-8381 • Fax: (254) 752-3307 • www.ramaircraft.com