2010 BOX STOCK (Honda) CLONE CLASS 196 cc, 6.5 HP, OHV Clone engine available from Harbor Freight.

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1 2010 BOX STOCK (Honda) CLONE CLASS 196 cc, 6.5 HP, OHV Clone engine available from Harbor Freight. This class is strictly setup to offer an affordable, fun alternative to karting. The Engine currently sells for approx. $ from Harbor Freight plus $11.00 shipping. OHV Clone Engine RULES (Also known as the Jiang-Dong, Lifan, Greyhound, Central Machinery, etc..) Must be a 196 cc, 6.5 HP, OHV clone engine. Engine must be Box Stock - no machining, porting, polishing NOTHING No internal aftermarket parts or Honda parts. Governor may be removed and Oil Sensor & Kill Switch disconnected. Stock muffler or any aftermarket pipe w/muffler allowed. (AKRA Length rule) Stock air filter or any aftermarket air filter w/adaptor allowed. Any carb jet allowed. Fuel Tank: Stock tank or floor mounted tank can be run. Aftermarket fuel pump of any kind is allowed. Fuel pump must be pulsed from either crank case or valve cover. Centrifugal 2 (Two) shoe type clutch only Examples are Max Torque, Hilliard, Comet.. # 35 Chain only Pump Gas only, octane, No racing fuels, No additives Must have tie-strap on plug wire to kill engine Alternative throttle kit allowed. Tachometers allowed. Kart must be an approved race kart for safety reasons but may be a very old in-expensive kart. Claimer - $ (base engine & carb only) - Does not include mount, chain guard, clutch, header, air filter adapter, throttle linkage, pump & plate. - Can only be claimed by karter in clone race. - Engine will be marked and will stay locked up at the track. - Karter claiming engine must run the claimed engine at next CVS clone race attended. - If karter does not return to race, engine can be picked up at end of season. Any Karter who refuses claim/engine inspection or with an engine found illegal in this class through Track tech will be banned from racing at Cove View in any class for the year and lose all points. Currently no tire rule. Weight = 350 Age 13 and up. (no exceptions) Enjoy this class for what it is. Racing that is low cost, fun, and competitive. Unless stated otherwise above, we will follow AKRA rules shown following.

2 Note: The following was copied from forums ENGINE SPECIFIC TECH SHEET FOR: BOX STOCK PROJECT 6.5 OVH Description: Single cylinder, 2 valve, OHV 4 cycle Important Note: All parts must be Box Stock Project factory production parts unless otherwise specified In this rules manual. No machining or alteration of parts is allowed unless specifically noted. All parts will be subject to a comparison to a know Box Stock part (when performing a "stock part" comparison check it is recommended to use a + /-.005 tolerance). Engine will be teched as raced. There will also be a $200 claiming rule in place for this engine. Refusing to accept the claimer will result in immediate disqualification of competitor along with forfeiture of any points earned to date in class. Competitor will also not be allowed to compete any longer in that class. Combustion chamber volume: 26.5 cubic centimeter minimum, with piston at TDC, using prescribed procedure. Cylinder Head Requirements: Must be OEM casting only. Porting and / or grinding are not permitted. Valve seats are two angles 45 degrees valve face and 30 degrees top relief. Stock head bolts only, must have four. Head gasket maybe after market, must be of stock configuration. No copper or aluminum gaskets allowed. Stock exhaust system only with no modifications. Any stock configuration gasket allowed no other sealer. Bore and Stroke: Stock cylinder bore is max. Stroke is / Carburetor requirements: Huayi OR RUI*ING model carb only. Carb to intake sealer is gasket only no other sealer allowed. Choke must be as supplied from factory, but may be fixed to stay in open position. Venturi.615 NO-GO. Rear carb bore.751 NO-GO. Main fuel jet.042 NO-GO. Valve Train: Stock valve cover only with any stock configuration gasket, no sealer. Factory stock rocker arms and push rods only. Stock valves only 45 degree angle only both valves, no modifications allowed. Only Box Stock valve springs only. Max wire diameter on spring wire is.0705 with a maximum tension of 10.8 lbs. at a height of.850. Ignition system: Stock Box Stock system only and must be unaltered. Kill switch and low oil sensor may be disabled and removed. Flywheel: Box Stock flywheel only with plastic fins. No alterations of any type allowed. Must also run stock flywheel key. Piston and Rings: Must be unaltered Box Stock only. No machining of piston and rings allowed. Connecting Rod: Stock Box Stock rod only. No machining of any type allowed. Stock rod bolts only. Crankshaft Requirements: Stock Box Stock crankshaft required. Machining, polishing, addition of material or other alteration of crankshaft is prohibited. Stock factory timing gear mandatory and must be installed in original location. Crankshaft journal diameter is min.

3 Camshaft Requirements: Stock as cast camshaft only. Cam lobe base circle diameter.865" /+.010 Duration check for Intake and Exhaust lobes (taken off pushrod). Intake duration of degrees at.050 lift/85.5 degrees at.200 lift. Exhaust duration of degrees at.050 lift/96.5 degrees at.200 lift. (All checks will allow +2 degrees for wear and gauge variances.) Max Intake lift on cam.225 taken at the pushrod. Max Intake lift at the valve.238 Taken on valve spring retainer with zero lash. ****************************************** Max Exhaust lift on cam.232 taken at the pushrod. Max Exhaust Lift at the valve.242 Taken on valve spring retainer with zero lash. Special note. Valve guide wear can give false valve lift readings when checking off the front of the valve spring retainer. It is advised to take readings at several other points around the retainer (back, and both sides) if wear is suspected of giving a false, unfavorable reading. Block Requirements: Block must remain stock as produced. Stub for governor may be removed and hole plugged. No machining of block allowed. Welding to the block shall be for rod damage repair only and may not constitute a functional modification.

4 EXAMPLES View more Greyhound items 6.5 HP Horizontal Shaft Overhead Valve Gas Engine Features gas saving overhead valves for cooler, cleaner running and longer life. Cast iron cylinder sleeve Low oil shut down Fuel shut off for safe transport EPA certified Ball bearing support shaft for increased durability 6.5 HP, 3600 RPM, Four stroke; Recoil start, Electronic ignition, 3.6 liter fuel tank, Engine displacement: 196cc, 3/4" straight keyed shaft, Keyway: 3/16" Weight: 34 lbs.

5 View more Central Machinery items 6.5 HP HORIZONTAL SHAFT OVERHEAD VALVE GAS ENGINE Features gas saving overhead valves for cooler, cleaner running and longer life. Cast iron cylinder sleeve Low oil shut down Fuel shut off for safe transport Ball bearing support shaft for increased durability EPA certified 6.5 HP, 3600 RPM, Four stroke; Recoil start, Electronic ignition, 3.6 liter fuel tank, Engine displacement: 196 cc, 3/4'' straight keyed shaft, Keyway: 3/16'', Weight: 34 lbs.