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O.S. 21XZ-R or Novarossi 35Plus.21

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Old 03-21-2013, 01:53 PM
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Car-Tune
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Default O.S. 21XZ-R or Novarossi 35Plus.21

Ive seen and heard that Novarossi 35 plus .21 are great and put out the power that they claim and sells for $500.

3.49cc. Max. power 2.87 Hp. R.P.M (Max. power) 38.200 R.P.M. 6.000 ~ 45.800 R.P.M. Bore x stroke 16.26mm x 16.80mm N. Transfer ports N. 9 Code 08551 Rear Ball Bearing Ball type Ceramics Codice / Code 16002 Starting Starterbox Crankshaft Type 14.5mm - Turbo SG Codice / Code 85012 Carburetor Type Aluminium 9mm - Slide



I have also been looking at O.S. 21XZ-R Speed On-Road Engine that sells for $500

Displacement: 0.213 cu in (3.49 cc)
Bore: 0.640" (16.27 mm)
Stroke: 0.661" (16.8mm)
Practical RPM: 4,000-45,000
Power Output: 2.8 PS, 2.76 HP 33,000 RPM
Weight: 12.1oz (343g)
Distance Between Mounting Holes Same Side: 0.83" (21mm)
Distance Between Mounting Holes Opposite Side: 1.45" (37mm)
Height Bottom of Mounting Tabs/Top of Cylinder Head: 3.10" (78.8mm)
Width of Mounting Tabs: 1.8" (45mm)
Distance from Backplate to Front Bearing: 2.6" (65.6mm)
Distance from Center of Crankshaft to Front Bearing: 1.7" (44mm)
Distance from end of Crankshaft to Backplate: 3.7" (95.1mm)
Carburetor Settings,



I will be installing onto an HPI RS4-3 on-road car. Which of these 2 engines would you recommend being better?
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Old 03-22-2013, 01:27 PM
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Default RE: O.S. 21XZ-R or Novarossi 35Plus.21

Did you get a big block conversion? How do you plan to mount a big block 1/8th onroad engine into a 1/10 touring?

It will probably will just rip your drive train apart in any case.
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Old 03-31-2013, 07:01 PM
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Default RE: O.S. 21XZ-R or Novarossi 35Plus.21

go lrp that's a great motor.i have a savage and run a lrp 32 also had a lrp 28 great motors plenty of power.but of course you need to run a small block check lrp out
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Old 07-02-2013, 10:24 AM
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Default RE: O.S. 21XZ-R or Novarossi 35Plus.21

I have a question. Which engine with be more power for a nitro tc3 sirio .12 evo 2 or any novarossi .12 engine??

keep in mind that I'm racing on track with the nitro tc3.
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Old 07-02-2013, 01:46 PM
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Default RE: O.S. 21XZ-R or Novarossi 35Plus.21

What kind of track?
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