GotNitro RC Discount Store

Take advantage of the recent drop in the Euro. Brand new 2010 Radical/OPS factory modified engines. Radical 628T Off-Road Competition .28 engine. National Champion 2007 RC Pro Series! Comes with Venturi carburetor and 6,7,8mm aluminum inserts. Manufactured by OPS in Italy. Huge 4.6cc engine. Almost 4hp. Please note; Current batch of this engine does not have Radical logo on top of head. Radical 628T Off-Road Competition High Torque .28 engine. Huge 4.6cc. National Champion 2007 RC Pro Series ! This Italian stallion is a true work horse in the realm of off-road 1/8th scale competition motors. You will be amazed by the fine detail of this engine. The engines mount screw holes are machined flush which is a feature I have never seen before. The heat-sink head is secured to the engine block by six cap-head screws. Engine comes with all the necessary items to get this motor up and running, a turbo plug and Allen wrench. Under the head: The engine is already shimmed for 25-30% nitro fuel. The crankshaft has a ported center passage with elliptical cuts on the counter-weights along with oil passages where the crank meets the case bearing to help lube the components. The end of the crankshaft has a beveled edge that helps chop up the mixture as it enters the crank port. Admiring the chrome-platted brass design with a total of 7 transfer and boost ports. All the transfer ports have tapered angled channels with fanged out edges. The exhaust port has an internal taper to the port with some notches at the top. The engine receives extremely high marks in this department as it is evident that the power version and the torque version engines are factory modified throughout the products port system. The blocks internal ports provide a smooth flow and transfer throughout the engine block. This engine block also has five integrated fins to help displace the core temp away from the piston and sleeve. Careful when reinstalling the back-plate, the instructions are clear that the piston must be positioned up in the sleeve before the backplate is reinserted as the o-ring sealed plate is milled out to accommodate a portion of the high-silicone aluminum piston when it is at dead bottom. Carb This power version slide carburetor has one low-speed, and one high- speed needle along with one idle screw. Enthusiasts often make the mistake of breaking in the engine cold you do not want to do that with these engines. Heat em up to 200% before starting each time and every time and these engines will last you a life time. We have customers in Australia that swear their Radical 628T is coming on stronger after 5-6 gals of fuel. You will get many gallons of unbelievable performance out of these engines with a little TLC. Any question just shoot us an email. We carry full line of replacement parts and all Radical orders are shipped Priority mail Free of charge.