The guy at the shop where I get my parts from suggests that I not mess with camshafts if I am going turbo. Do any of yall know why?

Thanks

 

yu0 can. i dunno if a company makes turbo cams for the h22a, i doubt it, buy you would want an exhaust cam with a high lift and little duration to help the turbo spool, as far as the intake, i dunno. i tried the DOHC thing but it didnt work.

 

That is what i have heard and a local shop recommend it too, however, i know that Crower make cams for turbo too look at it there are like 2 stage turbo cams

 

well goddamn. yu0 should hook them up.

 

FI cams and NA cams have different profiles... thats why he's telling you not to mess with it. If you stick a high performance NA cam in there, you could actually DECREASE your performance on a FI setup.

 

from everything i've read, the OEM honda ones work really well for turbo applications, and the gains with switching to a set of like crane turbo cams or something are very very small if any at all. Anyone else hear otherwise?

 

Most aftermarket cams are designed for NA appliactions. In an NA motor, you typically want your cams to have high lift and duration to increase breathing. With higher duration cams the period of valve overlap is longer. Valve overlap occurs when the exhaust valves are open at the same time as the intake valves. This works to make power on a NA motor.

However, a lot of valve overlap can be detrimental in a forced induction scenario. If the exhaust valves are open when you are trying to cram pressurized air into the combustion chamber through the intake valves, the boost is lost because it is going right out the open exhuast valves. So with lots of valve overlap on an FI motor, you effectively loose boost and loose power.

Andrew

 

Thanks you guys


[Modified by kidaniel, 9:52 AM 11/28/2002]