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Connecting rods connect the piston to the crank shaft. When the pistons go up and down, they move the rods which in turn move the crank.

There are two sets of valves on a head: intake valves and exhaust valves. The intake valves open and let in fuel/air, the spark plug causes the mixture to explode, then the exhaust valves open and let the fumes out. Then the process starts all over again.

Check out http://www.howstuffworks.com/engine.htm Very good stuff. :)
 

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Thai.95LCoupe said:
Ok so if we upgraded these two things what would be the outcome...?
Nothing unless you go with different compression ratio for your pistons or you are going for a 500 wheel hp legend. There is no need to upgrade the valvetrain (valves) unless you are going for a higher redline.
 

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Thai.95LCoupe said:
Ok so if we upgraded these two things what would be the outcome...?
they forgot to mention your wallet would be around $2000 lighter.
bigger/better valves $30 x 24
bigger/better conrods $250 x 6

Prob. not needed till you get to the 350+hp range.
 

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Thai.95LCoupe said:


What are connecting rods?
Also what do the valves do...

Please forgive me i'm learning...:)
The internal engine part i have my hands on right now:D

~Hybrid
 
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