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Home > ENGINES > Off-Road > .25 4,04cc

NOVAROSSI ROMA .25 7 Port Off-Road Engine (Turbo)

Part Number NOVROMA25
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Price
Price:   $299.00
On sale: 
$199.00
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Out of Stock, Usually Available to ship in 3-5 days
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Description
  ROMA.25

   Displacement: 4,04 cc
   R.P.M. (max power): 37.500 RPM
   Practical range: 6.000-42.100 R.P.M.
   Bore x stroke: 17,10x17,60 mm
   Sleeve: 7 ports
   Rear ball bearings: steel
   Front ball bearings: steel
   Crankshaft: 14 mm - turbo
   Carburetor: plastic - 9 mm - reverse
   Glowplug: Turbo (C6TGC)
   Exhaust position: posteriore
   Starting: -
   Weight: 374 g
FEATURES
02000-25 08500-25 15000-25 21000-2
Cooling head:
The cooling heads of the ROMA.21 engines are made lighter by making aditional holes in the cooling fins. This reduces the overall mass of the engine.

 Sleeve:
The sleeve has 7 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.
 Crankshaft:
The Turbo SG crankshaft is made from high quality steel.




 Gasket:
The inner shape of the gasket has a new shape, and with that more material.
Together with a change in material these gaskets are more resistant to high temperatures.
candela-turbo 13021 03902 24063
Glowplug:
The glowplug of engine is a Turbo type glowplug. Turbo glowplugs have a different shape than Standard glowplugs and therefor are not interchange able with engines that are using Standard glowplugs!
 Rear cover:
The rear cover presents a round shape to optimize the filling and reducing the dead spaces. the steel plate is to reduce friction and to expand the lifespan of the conrod.

 Compression rings:
The ignition timing is controlled with these little rings of various thickness. To change the ignition timing you can add or remove a ring of a certain thickness.

 Carburetor:
This carburettor is made from plastic and have a sliding throttle valve. (reverse type).



 

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