Stock cam vs performance cam
Joined: Mar 2002
Posts: 2,018
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From: lafayette, la, usa
Re: Stock cam vs performance cam (clean90Si)
When you turbo a stock motor, why do some people re-install the stock cam? Wouldn't you make more power if you keep the perf cam?
Confused!
Confused!
Honda-Tech Member
Joined: Feb 2002
Posts: 9,455
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From: I heart tool, US
Re: Stock cam vs performance cam (CovertFI)
When you turbo a stock motor, why do some people re-install the stock cam? Wouldn't you make more power if you keep the perf cam?
Confused!
an N/A cam has over lap. a performance N/A cam has ever more over lap. over lap is when bothe exhaust valves and intake valves are open at the same time. so with a turboed car the air would just move straight throught the engine.
Confused!
an N/A cam has over lap. a performance N/A cam has ever more over lap. over lap is when bothe exhaust valves and intake valves are open at the same time. so with a turboed car the air would just move straight throught the engine.
The air enters the engine the same time the spent exhaust is leaving.
[Modified by Bryson, 12:42 PM 8/8/2002]
Honda-Tech Member
Joined: Aug 2001
Posts: 8,613
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From: Naples, Fl, USA
Re: Stock cam vs performance cam (clean90Si)
Your stock cam will do fine with boost. Idealy, you want a cam with more lift and less overlap/duration to prevent boost from escaping the combustion chamber, this is where aftermarket turbo cams come into play. Crower makes a *supposedly* very good turbo cam for SOHC's, look them up.
Senior Member
Joined: May 2001
Posts: 10,753
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From: Where snow is, I am.
Re: Stock cam vs performance cam (CovertFI)
an N/A cam has over lap. a performance N/A cam has ever more over lap. over lap is when bothe exhaust valves and intake valves are open at the same time. so with a turboed car the air would just move straight throught the engine.
there are turbo performance cams though with about the same N/A intake cam and the exhaust cam having alot of lift but very short duration while closing -- thus getting rid of alot of the overlap so air doesn't go right thru the engine.
[Modified by poison, 12:51 PM 8/8/2002]
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