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2. Screw extractor - Wikipedia

   en.wikipedia.org/wiki/Screw_extractor

   A screw extractor held in a tap wrench. A screw extractor is a tool for removing broken or seized screws.There are two types: one has a spiral flute structure, commonly called an easy out after the trademarked name EZ-Out; [clarification needed] the other has a straight flute structure.

3. Block heater - Wikipedia

   en.wikipedia.org/wiki/Block_heater

   Some cars are produced with block heaters from the factory, while others are fitted with block heaters as an aftermarket add-on. [3] The most common type of block heater is an electric heating element in the engine block , which is connected through a power cord often routed through the vehicle's grille.

4. Core plug - Wikipedia

   en.wikipedia.org/wiki/Core_plug

   Core plugs can also sometimes prevent freeze damage to the motor. During the early stages of the freezing of the engine coolant a freeze plug will sometimes burst or pop out, and thus allow the coolant to exit the engine, before it might expand within the engine during the freezing process and potentially crack the engine block. [2]

5. Engine block - Wikipedia

   en.wikipedia.org/wiki/Engine_block

   In an internal combustion engine, the engine block is the structure that contains the cylinders and other components. The engine block in an early automotive engine consisted of just the cylinder block, to which a separate crankcase was attached. Modern engine blocks typically have the crankcase integrated with the cylinder block as a single ...

6. Desoldering - Wikipedia

   en.wikipedia.org/wiki/Desoldering

   Desoldering tools and materials include the following: Solder wick; Heat guns, also called hot air guns; Desoldering pump; Removal alloys; Removal fluxes; Heated soldering tweezers; Various picks and tweezers for tasks such as pulling at, holding, removing, and scraping components. Vacuum and pressure pumps with specialized heater tips and nozzles

7. Chevrolet small-block engine (first- and second-generation)

   en.wikipedia.org/wiki/Chevrolet_small-block...

   The large-journal connecting rods were thicker (heavier) and used 3 ⁄ 8 in (9.5 mm) diameter cap-bolts to replace the small-journal's 11/32. 1968 blocks were made in 2-bolt and 4-bolt versions with the 4-bolt center-three main caps each fastened by two additional bolts which were supported by the addition of thicker crankcase main-web bulkheads.