October '17

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OCTOBER 2017 THE SHOP 43 SHOP TOOLS & EQUIPMENT This can be done at the dyno shop or prior to the trip. If the engine is equipped with a distributor, the distributor can be removed, allowing the oil pump to be driven with a drill. An excellent alternative is to use a pres- surized pre-oil canister. Oil is added to the canister, then the unit is pressurized with compressed air. A hose from the canister is connected to an oil port in the block. Once the pressure release ballcock lever is opened, pressurized oil is forced through the engine. The valve covers should be removed for this process, allowing you to verify oil delivery to each rocker. With all spark plugs removed (to ease engine rotation), slowly rotate the crankshaft 360-degrees while pressurized. This aids in allowing oil travel from passages in the block to the oil pas- sages in the crank, cam bearings, etc. While the oil system is being pressurized, this also gives you a chance to monitor for oil leaks. Once the engine has been pre-oiled, drain the oil from the sump, and refill with the correct amount of oil required for your sump. COOLING SYSTEM Leave the thermostat out. The dyno's water tower will provide coolant flow and will regulate temperature, so do not install a thermostat prior to bringing the engine to the dyno shop. Also, once the engine is off the dyno— Dyno shops prefer to use long-tube head- ers, in part to allow connection to their existing exhaust ducting that exits outside the building. (Photo taken at Gressman Power- sports, Fremont, Ohio) Seal the engine's ports during transport to prevent road debris contamination. Exhaust ports can be sealed with tape or with a set of exhaust port plates such as these from Jones Racing.

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