I was just wondering if i could run a CTR intake cam with a GS-R exhaust cam togther? Would this set-up give me a problem? Thank you for all your input on this subject.

 

dont think so, i think u should be alright without it, but of course u should get the other cam in the future...i know a friend that ran it like that and had no problems

 

There is no problem what-so-ever with running those cams together. You won't see much of a gain, maybe 5-8 hp.

Mixing and matching intake and exhaust cams can get you very nice results, if you know what you are doing. Some people do it to reduce overall duration on cam lobes, which makes for better idle and street-ability.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DocIowa &raquo;</TD></TR><TR><TD CLASS="quote">Mixing and matching intake and exhaust cams can get you very nice results, if you know what you are doing. Some people do it to reduce overall duration on cam lobes, which makes for better idle and street-ability. </TD></TR></TABLE>

But being that the GSR exhaust cam and CTR exhaust cam are nearly identical, the setup is basically a "poor man's method" of upgrading cams.

 

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

But being that the GSR exhaust cam and CTR exhaust cam are nearly identical, the setup is basically a "poor man's method" of upgrading cams.</TD></TR></TABLE>

if they are nearly identical-wouldnt one believe that there is no point in upgrading the exhaust cam and only the intake.

 

Where are you getting that information?

The CTR and GSR exhaust cams are VASTLY different.

GSR exhaust cam:
EXHAUST lift - 9.4mm, duration - 227@1mm

CTR exhaust cam:
EXHAUST lift - 10.5mm, duration 235 @1mm

How are they even close? Almost a full mm more lift, and more duration as well. A full mm difference is HUGE in cam specs.

I spent 3 months trying to decide if I wanted a 12.1 or 12.5 lift, and that's only .4mm difference!

But I was wrong on my estimation of hp. Installing both CTR cams will give you max, 10 hp on a GSR. So, in my opinion- it's a waste of $$, unless you get them REALLY cheap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DocIowa &raquo;</TD></TR><TR><TD CLASS="quote">Where are you getting that information?</TD></TR></TABLE>

I'll have to look into it. I've seen a lot of cam specs for what various people claim to be different cams, but end up performing similarly. I had a friend who dyno'd his car with a CTR intake cam a few times with the CTR exhaust cam and a few times with the GSR exhaust cam. I think he made .2 more horsepower up top with a maximum gain of .4 horsepower with the CTR exhaust cam when compared to the GSR exhaust cam. The engine was running with I/H/E, a skunk2 manifold and a skunk2 ECU.

Maybe I'm dead wrong, I don't know.

 

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

I'll have to look into it. I've seen a lot of cam specs for what various people claim to be different cams, but end up performing similarly. I had a friend who dyno'd his car with a CTR intake cam a few times with the CTR exhaust cam and a few times with the GSR exhaust cam. I think he made .2 more horsepower up top with a maximum gain of .4 horsepower with the CTR exhaust cam when compared to the GSR exhaust cam. The engine was running with I/H/E, a skunk2 manifold and a skunk2 ECU.

Maybe I'm dead wrong, I don't know.</TD></TR></TABLE>

specs wise they are totally different like stated above, as for the dyno maybe gains are minimal when you only swap in the exhaust cam and not the intake