Rep Power: 0

i was just reading right now about camshafts and they were explaining how an inline 4 or inline 6 will only have one cam since there is only one head. WRONG!!!! let's see, can you say type r or s2000?????

edit: Jon 1 howstuffworks 0 muhahahahahahaha (sorry i'm bored[IMG]i/expressions/face-icon-small-cool.gif[/IMG] )

 
Rep Power: 0

SOHC will have one cam, DOHC will have 2. They are still sort of correct I think.

SOHC 2 valve per cylinder - the intake/exhaust cams open 1 valve each
DOHC 4 valve per cylinder - again, the intake/exhaust cams open 1 valve each

Pop quiz boys and girls, how does a SOHC 4 Valve Per Cylinder Engine work [IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
Rep Power: 373

i am not famaliar with this topic hehe.

 
Rep Power: 0

SOHC 4 valves per cylinder intake and exhaust open 2 valves each ? am i right ? i dunno

 
Rep Power: 0

our engines as well as many others have 2 intake valves and 2 exhaust valves...times 4 cylinders is 16 vales and 4 per cylinder [IMG]i/expressions/face-icon-small-smile.gif[/IMG]

 
Rep Power: 0

It uses a rocker arm to use one cam to lift 2 valves. This creates a loss of power through friction (heat)

The old, dare I say inefficient, pushrod design uses a single camshaft with pushrods and rockers to operate 1 valve per head in the V configuration engines.

All in all, 1 cam per valve is the best design and 4 valved per cylinder is the best design. Thus DOHC is the best desogn. SOHC with 4 Valves per cylinder is second best. SOHC 2 Valves per cylinder is third, and 2 valves per cylinder pushrod is the least efficient.

Audi builds a 5 valve per cylinder engine, but I just don't know enough about it to comment.

 
Rep Power: 0

Dohc = Dual Over Head Camshaft

If you drive a 2K1 or 2K2 unless it's the Si or SiR has SOHC with rockers.

Why does your valve cover say DOHC? Mine says VTEC

 
Rep Power: 0

try the camry V6....four cams!!

 
Rep Power: 0

DOHC in V config = 2 heads = Dual over head cams per head = 4 cams

I'm not trying to BS you guys

 
Rep Power: 0

Then you dont drive an EM2, if you did it should either say "HONDA" or "HONDA VTEC"...the only DOHC Civics are US Si/CAN SiR's.

 
Rep Power: 0

Except for some turbo VWs and Audis, which have 5 valves per cylinder...3 intake, 2 exhaust...or vice-versa....I'm sleepy[IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
Rep Power: 0

[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
[IMG]i/expressions/laugh2.gif[/IMG]

 
Rep Power: 0

[IMG]i/expressions/face-icon-small-confused.gif[/IMG] What's wrong w/ the camry statement??....just making an observation....and the V6 is quick...much quicker than my civic..

 
Rep Power: 0

Ya...I don't get it either...it IS a 4-cam motor...[IMG]i/expressions/face-icon-small-confused.gif[/IMG]

 
Rep Power: 0

wait a sec, can someone explain what the 4 cam means, i'm confused?? the camry is a V6, but how does it have 4 cams....

 
Rep Power: 0

Any engine in a V configuration has 2 heads as opposed to an inline 'I' formation. Thus, a DOHC V engine will have 2 camshafts per head. So, that is why it has 4 camshafts.

Calling a camshaft a cam is a little confusing. A camshaft contains many cams. Generally 1 exhaust and 1 intake cam per cylinder. A 4 cylinder camshaft has 8 cams to actuate valves. A 4 valve per cylinder engine can use a SOHC with rockers, or a DOHC. 2 Valve per cylinder engines use either SOHC or Pushrods (in a V engine with one camsaft for the entire engine).

 
Rep Power: 0

well Jon, to be honest, i don't know the inside setup or explanation for the four cams....its my mom's car, and i just know it says "Four cam 24 and V6 3000" on the engine....i'm hopin one of the engine experts in the forum can explain it..