October '17

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Page 46 of 99

OCTOBER 2017 THE SHOP 45 SHOP TOOLS & EQUIPMENT that feature two-piece main seals (if even a tiny leak path is available, a full synthetic oil will find it). While many dyno shops may recommend a 30W oil for the dyno session, if you're using close-tolerance hydraulic lifters, the lifter maker may rec- ommend a lighter viscosity multi-grade oil such as 5W-30. Depending on the time that you have on the dyno, you might consider bringing an extra oil filter and an extra supply of engine oil, in case you have the time to remove the filter and cut it apart after the first few pulls to inspect for any metal debris. TRANSPORTING THE ENGINE Don't just lay the engine down onto an old tire in the back of a truck. In order to safely transport your engine to and from the dyno shop, an engine dolly (often called a cradle) is a necessity. Engine dollies are square or round tubing units that bolt to the block (usually at the motor mount locations and the bellhousing bolt holes) that provide a stable platform intended for storing and/or transporting an engine. Depending on design, these are available with or without caster wheels. A dolly provides a more secure support for the engine, and is easily tied down inside of a truck bed or a van's cargo area. Engine dollies are relatively inexpensive (usually ranging from about $75 to $150). A variety of manufacturers and retailers offer engine dollies for all GM, Ford and Chrysler applications and more. If the engine is exposed in the open bed of a truck, take the time to wrap it with plastic-cling wrapping to keep rain or road dust away. If you prefer not to wrap the engine, at the very least cover all open ports to prevent contamination, including exhaust ports, water pump neck and throttle body or carb (or intake plenum, if you remove the carb for transport). Transporting the engine on a dolly will also provide you with anchoring points to aid in securing the engine with tie-down straps. Note: While you may wish to wrap the engine in plastic to keep it clean and free of road dust, etc., on your way to the dyno shop, use caution when preparing to return home. If the engine is still warm when loaded into your vehicle, wrapping the engine in plastic can cause condensation and resulting oxidation of aluminum and any bare steel or iron surfaces. Either wait for the engine to completely cool before wrapping, or leave it bare and clean it once you arrive at your destina- tion. In either case, be sure to protect open ports such as intake plenums, cylinder head exhaust ports, etc. MIKE MAVRIGIAN owns and operates Birchwood Automotive in Creston, Ohio, where he builds custom engines, street rods and performs vehicle res- torations. He has written thou- sands of technical articles, as well as nine books on automotive technology during the past 30 years. Mike can be reached at 330-435-6347 or Visit Birchwood's website at www.birchwood- FINANCING AVAILABLE! ●RACE ●INDUSTRIAL ●GARAGE ●SHOP ●TRAILER ●SPECIALTY WE BUILD IT BETTER! WWW.CTECHMANUFACTURING.COM ALUMINUM CARTS, CABINETS & DRAWERS

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