Nitro Star 12R SS Pullstart
#1627
Our latest Nitro Star engines are a leap forward from our previous designs! Each one of our new engines put out over 1 horsepower, so you'll have all the power you need at your fingertips!
Our new 12R line of engines uses a high-tech Nickel-Silicon Carbide coating that is being used in many high performance applications by companies like Jaguar. The Nickel bonds to the surface, the silicon lubricates, and the carbide gives extremely long wear. The new Carbide coating in the HPI 12R SS and 12R SC engines, you will see many improvements over standard chrome coatings:
- 2 to 10 times more durable than chrome
- 50% higher heat capacity
- Superior lubrication retention
- Better for the environment (no mercury is used during manufacturing)
This is the rotary carb, nonpullstarter version of our new Nitro Star 12R engine. From the 5.5mm opening to the ABC construction inside the black engine case, this engine is all about speed and power! A tall purple anodized aluminum heat sink keeps everything cool, while the traditional side exhaust routing will fit any Nitro car or truck.
This is a highly advanced, reliable and powerful engine that will fulfill all your racing and hobby needs!
For more details about the new Carbide coating used in the new HPI 12R SS and 12R SC engines, see these links:
Nitro Star 12R SS Exploded View and Parts List
| Construction | ABC (Aluminum piston, Brass sleeve, CARBIDE plated sleeve), using Formula 1 nickel-carbide plating technology! |
| Displacement | 2.09cc |
| Bore | 13.8mm |
| Stroke | 14mm |
| Max RPM | 35,000rpm* |
| Weight | 250g |
| Carburetor | 5.5mm opening, rotary-type, two-needle adjustment |
| Cooling head | purple anodized machined aluminum |
* These figures are estimates from the manufacturer of the engine. Like most R/C car companies, HPI purchases engines from model engine manufacturers, we do not have a testing lab or dyno to rate our engines.
HPI Nitro Star engines have a 2 year limited warranty. Read our Nitro Star Engine Warranty.
FAQ Question: Why does the Nitro Star 12R engine feel like it loses compression so quickly?
The new coating and the use of an oil ring in these engines means that they feel as though they have low compression when there is no fuel in the engine. When a compression gauge is put on these engines, it will only register 40-50 psi. However, when oil is added to the engine so that the oil ring is filled the compression will jump up to 65+ psi. We are having a number of these engine sent in (about 3-4 per week) where the customer is reporting that the engine has no compression. When we test them, we find that the compression is well within tolerances and that when the engine is ran, it shows no sign of having a worn piston and sleeve. In addition, the coating on the sleeve has a silicon coating that makes it more slippery than chrome, so it doesn't feel like it has as much "pop" even though the compression is still good.