NarendZORCE Zorce Editor-in-Chief
Joined: 04 Apr 2005 Posts: 3137 Location: In Zorce, usually after the contents page
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Posted: Sat Jan 21, 2006 2:47 pm Post subject: Engine terms... |
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Special thanks to Plex306 and bleedingfreak for the find:
PORTED ! The inlet and exhaust ports in the cylinder head are machined/ground out to carry a volume of air/fuel mixture into the engine.
Polished! The ports in the head are polished to remove casting marks. This helps to reduce turbulence and friction, allowing the air to move more freely.
Big Valve Head ! The cylinder head is fitted with bigger diameter valves to increase the flow volume, with the area under the valve head machined out to suit.
High Lift CAM! Upgraded camshafts with lobe angles and lift height altered to increase power, by allowing more fuel/air past the valves as they are basically open longer.
Balanced ! Pistons and con-rods are balanced in weight to avoid any unwanted vibration and uneven stress on the crank. The crank is dynamically balanced whilst moving like and standard wheel to avoid any vibration.
Solid Lifters ! Machined parts to replace the hydraulic lifters for the valve opening operation, usually used to gain a higher rev range restricted by the oil driven original design.
Bored Out! This term just means that the cylinder bores have been machined to accept oversized pistons, therefore making the capacity of the engine greater.
Lightened Flywheel ! Either a machined standard cast iron flywheel, or for higher revving engines, a purpose built lightweight jobbie usually machined from billet steal. This will allow the engine to rev quicker, though a smooth idle may be sacrificed.
Forged Racing Pistons ! High quality forged/machined racing pistons that are used to once again replace inferior factory ones. They are designed to be light weight, can withstand far higher revs ranges. Only of use in a highly tuned motors.
Vernier Pulleys! Aftermarket cam pulleys that directly replace the standard items. They incorporate a lockable adjusting mechanism to allow fine precision valve timing to gain maximum power in desired areas.
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Links to Glossaries and Dictionaries and etc
Hundreds of definitions! Lots of technical jargon for us techies too!
http://www.autoglossary.com/
Illustrated Auto Glossary - Just a handful, but helpful and useful nonetheless
http://www.samarins.com/glossary/
This one take win! Look at entries!
http://www.enjoythedrive.com/glossary/
Automotive Insurance Glossary
http://www.libertymutual.com/omapps/ContentServer?cid=1056650100259&pagename=PMInternet%2FPage%2FPMTertiaryRed&c=Page
Some commercial terms as well as technical terms
http://www.seriouswheels.com/car-glossary.htm |
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