HPI BAJA 5T 5B OBR RACE PORTED 30.5CC STROKED ENGINE

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HELLO, THIS IS A REBUILT USED 30.5CC ONEILL BROTHERS ESP MODDED ENGINE. HAS NEW 36MM PISTON & RING KIT. NEW WRIST PIN, WRIST PIN BEARING, WRIST PIN CLIPS. BASE GASKET. 2MM STUFFED CRANK, 668 CARB. SPECS ARE AS FOLLOWS. THIS HAS THE SQUISH RING IN THE CYLINDER, AND PROPER PORTING, BUT IS NOT MARKED AS ESP. DONT KNOW WHY? ALSO I DIDNT CLEAN OUT THE CARB SO MAY NEED A GOOD CLEANING BEFORE YOU RUN THE ENGINE FOR BREAK IN. THESE ARE VERY TORQUEY ENGINES, GREAT FOR USE ON THEM HEAVY ALUMINUM BAJA'S!!! LIST PRICE IS $435.99 THANK YOU. So where does the power come from? We start with a Chung Yang stuffed crank CY29RC engine (35mm bore, 30mm stroke - 28.9cc). The 35mm top-end is removed and set aside. We want a larger, 36mm top-end for increased displacement and power! But the stock 36mm cylinder does not have room for the long 30mm stuffed crankshaft, so ESP has machined out the proper spacing. This is a more efficient and reliable solution than stacking gaskets to achieve the needed space, as there is proper spark plug clearance, the piston ring remains in the well-plated area of the cylinder, and the ignition coil remains properly gapped to the flywheel. The squish band is cut so there will be .020"-.025" of squish (using the stock .020" cylinder gasket), and the combustion chamber is machined to get the compression ratio down to 14:1 read more

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