Novarossi CLIO P5 Tuned Long Stroke .21 Off Road Engine (Turbo) (Steel)

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This is the Novarossi CLIO P5 Tuned .21 Off Road 5 Port Buggy Engine. The CLIO is the latest version of the notorious Novarossi P5, updated with a recessed cooling head for a lower center of gravity, and an o-ring supported combustion chamber. Additionally, a 3-needle reverse type carburetor has been chosen to deliver a better idle and improved return to idle characteristics.

Other features include an R7 conrod made from super light aluminum, designed to create the least amount of turbulence inside the engine. This has been combined with a 5-port sleeve to create a linear power output and to keep fuel consumption low. The crankshaft features a larger bore intake to increase the mixture flow, and includes a special shape to optimize gas-flow in the engine. 


  • Cooling Head: The cooling head has been drilled and recessed to reduce the mass of the cooling head and lower the center of gravity of the engine/car.         
  • Sleeve: The sleeve has 5 transfer ports, and an exhaust with booster ports to deliver linear power and keep fuel consumption low.
  • Crankshaft: The crankshaft has a larger intake bore to increase the mixture flow, and has a special shape to optimize gas flow in the engine.
  • Conrod: The R7 conrod is machined from a super light aluminum that has been checked ultrasonically. The unique shape of the R7 rod creates less turbulence inside the engine.
  • Glowplug: The glowplug of engine is a Turbo type glowplug. Turbo glowplugs have a different shape than Standard glowplugs and therefor are not interchangeable able with engines that use Standard glowplugs!
  • Carburetor: The plastic carburetor is a "reverse" type with a sliding throttle valve. It uses a three needle configuration to provide a better idle and improved return to idle.
  • Combustion Chamber: The combustion chamber is supported by an O-Ring which is placed between the combustion chamber and the crankcase to reduce the vibrations of the combustion chamber.
Recommended Tuned Pipes: NVR51006, NVR51016, NVR51017
Recommended Tuned Manifolds: NVR41021, NVR41029, NVR41030

Recommended Glow Plug:
  • C5TGC: For ambient temperature - 32°F/50°F (0°C/10°C)
  • C6TGC: For ambient temperature - 50°F/77°F (10°C/25°C)
  • C7TGC: For ambient temperature - 77°F/104°F (25°C/40°C)
RPM (max power): 34,800
Practical Range: 6,000 - 36,500
Displacement: 3.49cc
Bore x Stroke: 16.26 x 16.80mm
Transfer Ports: 5
Front/Rear Bearing Type:
Crankshaft Type: 14mm turbo
Carburetor Type: Plastic 9mm reverse
Adjustment: 3 needle
Glowplug Type: Turbo - C6TGC (included)
Exhaust Position: Rear
Weight: 367g
Fuel Type: Advise 25% Nitro

This product was added to our catalog on March 11, 2014

Verified Owner
Monday, Nov 9 2015 (about 4 years ago)
Novarossi CLIO P5 Tuned Long Stroke .21 Off Road Engine (Turbo) (Steel)
Oh lawd this thing rips... Still not all the way broken in yet, running rich still, however, it is already rediculously powerful. I would recommend this engine to anyone. Also,make sure to heat cycle for the break in. The pinch was pretty stout from the factory. This way it would prevent stretching the connecting rod. Overall, awesome engine!!!

UPDATE 2/7/16: after only 4 gallons this engine gave up the ghost, both engine bearings were shot… I believe the front went first, which caused it to suck up air/debris into the engine and ruin the rear bearing as well. For those wondering how to tell if your engine bearings go bad, listen to your engine run. If you hear a metal scraping noise that goes away if you put your hand on the cooling head, the rear bearing is a goner. If you here that sound immediately stop the engine and take it apart completely. That is how I found out that both bearings were bad, as well as why glow plugs would only last about 5 minutes. When dirt or metal particles are inside your engine, they get shot up into the glow plug during combustion, ruining the glow plug, the engine still may run with the glow igniter in, however as soon as the igniter is removed, it dies out. This is what happened to me anyways. I still recommend this engine as I think that mine was just a fluke.

Recommended tuning setups 2/7/16: with a 9901/41021 pipe/header combo and 7mm Venturi ( this engine likes a lot of air, don't use anything less than a 6.5mm Venturi).
High speed needle should be just above flush with its housing
Low speed needle should be about a full turn in from flush
Medium speed needle should not be touched, maybe leaned out about a half hour (very fine adjustments only)

With this combo I have never felt an engine so responsive and powerful, screamed from bottom to top with awesome acceleration. Some may say that the 9901 is a bit restrictive however I disagree completely
Wednesday, Mar 11 2015 (about 5 years ago)
Novarossi CLIO P5 Tuned Long Stroke .21 Off Road Engine (Turbo) (Steel)
This engine is amazing! If you break this engine in properly ( ) you can have ballistic power along with fuel mileage! This engine is what helped me win the Indy RC World Ice Breaker 2015! Easily pitting at 10m:30s with fuel to spare! Its a smooth engine and like al Novarossi it has serious compression!!!
Verified Owner
Saturday, Mar 21 2015 (about 5 years ago)
Novarossi CLIO P5 Tuned Long Stroke .21 Off Road Engine (Turbo) (Steel)
These motors are killer! At this price point there is NOTHING else out there that compares.
Verified Owner
Saturday, May 30 2015 (about 5 years ago)
Novarossi CLIO P5 Tuned Long Stroke .21 Off Road Engine (Turbo) (Steel)
This motor will not disappoint! I highly recommend the 9901 Nova pipe to go with this motor. It took a little longer than most motors I've used to break in, but once it was, it has run great with no flameouts and tons of power. This motor also has the fuel efficiency of it's 4 port brothers at a lower cost. I have been running tornado 25% off-road fuel mixture with the 6.5mm venturi. Amain's recommendation to switch to a C7 above 77degrees is spot on. I've had this motor screaming lean on an 85+ day and with the C7 I peak at 230-240 degrees F. I did Loctite the carb pinch bolt as it loosened up after a while. If you are looking for a budget Italian motor that will keep up with the rest and not burn a ton of fuel, this is it.