i created this cuase i didn't want to thread jack the another post, so my question is

"<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by igotyofire &raquo;</TD></TR><TR><TD CLASS="quote">so say your using your head and ur gsr,b16 cams which were only ment to rev to 8k? but you want to rev it higher becuase say you have a big size turbo, will simply upgrading the valvetrain to rev higher create more power by revving higher on a turbo setup? or do u need to get turbo cams along with that becuase it seems many are just keeping stock cams.</TD></TR></TABLE>"

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTC_CiViC &raquo;</TD></TR><TR><TD CLASS="quote">

Will you gain more power by simply reving more? The common sense answer (or at least to me) is no. Cams dictate where your power is made, so if a specific cam in a specific engine (say B16) is designed to peak power at 7600rpm, simply revving it higher won't increase power production since you've now passes the effeciency threshold where those cams operate at their best under a given set of cirumstances. This is where cam timing on the fly comes in handy

Of course, this is just my "off the wall" theory so who knows how unaccurate is really is </TD></TR></TABLE>

but isn't exhuast flow a main source chararistic of spinning the turbo? i know the cams on a NA setup would start to loose power, but isn't the more rpm going to keep spinning the turbo, and wont the turbo continue to make power as long as it is not spinning above its effiencey range(such as a t20 on a h22 at 5k for example)

 

A pressurized intake will totally change how a camshaft acts on an engine. I know guys turning 9k and making power on stock gsr camshafts, others may be turning more.

 

what he said! ^

 

thats what i thought, so now the question is where do turbo cams come in at, camshafts are usually designed to rev to high and determine where the powerband is going to be in a NA setup, so with a turbo setup how is the came going to determine where the power is going to be made, seems to me the turbo choice, and engine determines where the power is made. so are turbo cams a waist of money?

 

In a turbo setup, there is a wide range of items that determine peak power, it's not as much dictated by the cam as it is by the cam, the turbo, the head's flow, and the intake manifold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by igotyofire &raquo;</TD></TR><TR><TD CLASS="quote">thats what i thought, so now the question is where do turbo cams come in at, camshafts are usually designed to rev to high and determine where the powerband is going to be in a NA setup, so with a turbo setup how is the came going to determine where the power is going to be made, seems to me the turbo choice, and engine determines where the power is made. so are turbo cams a waist of money?</TD></TR></TABLE>

no, turbo cams make more power versus stock cams...and definitely n/a cams due to the amount of lift/short overlap/and duration on the intake lobes...

to get THE most out of your turbo you must get as much air/fuel into the chamber as possible with as little overlap as possible so the mix has longer to burn before starting to be spewed out the other end thus giving a larger volume of exhaust gas to be pushed out forcing even more pressure against the turbine wheel to turn it that much faster...

I could go into the details of it all but I'm too tired right now...just do a few searches and look at specs on turbo cams versus natural aspirated cams on a few manufacturer websites and you'll begin to notice the similiarities of the turbo cams and the differences vs. n/a cams...