Novarossi ISON Tuned 7 Ports .21 On Road Engine (Turbo Plug) (Steel Bearing)

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Price: $269.99 (Save 8%)
Sale: $248.99
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This is the Novarossi ISON Tuned 7 Ports .21 On Road Engine. Novarossi is dedicated to giving 1/8 on road racers a cost effective power plant, that punches far above its pay grade. The ISON .21 features a 7 port sleeve and a slugged/ramped tuned crank, to provide a reliable engine that produces the power needed to race, at a price that makes it a great practice engine. 


  • Conrod: The R7 conrod is machined from super light aluminum that has been checked ultrasonically. The unique shape of the R7 rod creates less turbulence inside the engine.
  • Sleeve: The 7 port sleeve is made from hard-chromed brass (true ABC construction)
  • Crankshaft: The crankshaft has been ground to increase the mixture flow and has a special shape to reduce turbulence inside the crankcase. The balancing is achieved using two tungsten slugs, and the intake has a silicon filling to reduce weight and improve acceleration.
  • Glowplug: The glowplug of this engine is a Turbo type glowplug. Turbo glowplugs have a different shape than Standard glowplugs and therefore are not interchangeable with engines that use a standard glowplug.

Recommended Tuned Pipes: 51009, 51010, 51011
Recommended Manifold: 41015, 41016, 41017

Recommended Glow Plug:

  • C7TGF: For ambient temperature - 32°F/41°F (0°C/5°C)
  • C8TGT: For ambient temperature - 41°F/104°F (5°C/40°C)

Displacement: 3.49 cc
R.P.M. (max power): 38,800 RPM
Practical Range: 6,000-44,400 R.P.M.
Bore x Stroke: 16.26x16.80 mm
Sleeve: 7 ports
Rear Ball Bearings: Steel
Front Ball Bearings: Steel
Crankshaft: 14mm - turbo - tuned
Carburetor: Aluminum - 9mm - slide
Glowplug: Turbo (C6TGF)
Exhaust Position: Rear
Weight: 336g
Fuel Type: 25% nitro

This product was added to our catalog on February 26, 2015

Verified Owner
Friday, Jan 19 2018 (about 2 years ago)
Novarossi ISON Tuned 7 Ports .21 On Road Engine (Turbo Plug) (Steel Bearing)
I'm new to 1/8th scale onroad racing and i was very concerned about the price point of jumping into this racing class as it can be very expensive to get a competitive setup. This engine allowed me to try this class out and continue develop my racing craft at a more affordable price point. In terms of performance this thing rips down the back and front straightaway at my local track and i don't seem to be losing time because of a power deficit. All in all i am happy with my purchase and would recommend it if your looking to try this class out but not willing to jump in the deep end right away.
Verified Owner
Wednesday, Dec 25 2019 (5 months ago)
Novarossi ISON Tuned 7 Ports .21 On Road Engine (Turbo Plug) (Steel Bearing)
Hi, haven’t got to run it yet, still building my serpent 989,,,(you going to stock that car) the pic of engine is misleading,, shows a 3 needle carb. Hmm, It Came with 2 needle carb.. would of never ordered it. I always had 3 needle carbs.. they have way better tune... that’s why I gave it 2 stars.. hope Amain. Keeps up on manifactors changes...probley why it was discounted.. hmmmm. I have the serpent taipan,, bad ass kit! You need a low profile servo.. told them to put in description...I have 3600 motor ,, just run on high end car. Same price of 1/10 but way better !,,