1983 Toyota Celica GT-S - Message Forum (welcome to engines 101)

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welcome to engines 101

Posted By:	matt
Posted On:	February 26, 2003 at 7:48 pm GMST

Holy crap. this is funny.
Rocker arms attach to the rocker arm assembly. The rocker arm assembly on the 22r is held in place by the head bolts. The rocker arms are positioned between the cam and the valve springs, but they sit on top and actually touch the cam and the valve, the butt part of it. when the timing chain turns (cause it is a giant gear on the crankshaft and a bigger on on the camshaft) it turns the cam. The rocker rocks back and forh on the rocker assembly. When the cam lobe hits the rocker arm, it raises one side of it (cause there is a pipe down the middle of the assembly, like a giant see-saw), making it push down on the valve. This opens the valve allowint the gases to escape/ enter. it depends on the intake/ exaust side. Any more questions, send me an e-mail.

Replys:

Re: welcome to engines 101 - 85GTSConvert 02/27/03 (1)

More - matt 02/28/03 (0)

Re: welcome to engines 101 - terry 02/27/03 (0)

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Message:	matt wrote: > Holy crap. this is funny. > Rocker arms attach to the rock > er arm assembly. The rocker ar > m assembly on the 22r is held > in place by the head bolts. Th > e rocker arms are positioned b > etween the cam and the valve s > prings, but they sit on top an > d actually touch the cam and t > he valve, the butt part of it. > when the timing chain turns ( > cause it is a giant gear on th > e crankshaft and a bigger on o > n the camshaft) it turns the c > am. The rocker rocks back and > forh on the rocker assembly. W > hen the cam lobe hits the rock > er arm, it raises one side of > it (cause there is a pipe down > the middle of the assembly, l > ike a giant see-saw), making i > t push down on the valve. This > opens the valve allowint the > gases to escape/ enter. it dep > ends on the intake/ exaust sid > e. Any more questions, send me > an e-mail.
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