Quote:
Originally Posted by CamaroSpike23
BUUUUUUUUUUUUUUUUUUUUUUUT merf... you should also know that heavy over lap is not a bad thing with FI. at idle, yeah it sounds like it wants you to put a shotgun blast thru it, but im sure once it gets spinning it will run a LOT smoother.
I like it. but i wanna see it go WOT.
|
Yes sir, it is. AS a matter of fact the problem will be exaggerated in higher RPMs.
The reason a "lumpy" cam sounds so lumpy at idle is because the exhaust and the intake have a chance to equalize at low speeds and you are hearing it. When the engine is at higher speeds (the ONLY place a lumpy cam's power can be realized, as you will lose considerable low to mid range power) the escaping exhaust actually pulls the fresh intake gasses into the cylinder and that's when you see the huge gains (plus the intake is open that much longer allowing more air into the intake stroke...basically you are making the end of the exhaust stroke the beginning of the intake stroke).
If you are allowing boosted intake air to escape from the exhaust valves, and I am referring to a street machine, not a highly machined 8000 hp alcohol-blown racer, you are losing power...plain and simple!