ctr cams in gsr and more
just bought a ctr intake cam for my gsr. only other mods are exhaust and whale *****. would a stock itr manifold and or a larger throttle body help out at all?
Lets start off by saying that the stock ITR manifold will not fit a gsr head. This is given since the ITR has a b16a based head; it will not fit correctly.
However, an ITR style manifold, or any single stage manifold, will give you an edge on the higher end by sacrificing the bottom to mid range. Either way, the stock gsr manifold is restrictive. So yes, you will see some noticeable gain with an ITR style manifold with the cam upgrade. Expect a sluggish low to mid range.
As for the larger throttle body, it's not needed with those mods. If anything, have it port-matched to the manifold you wish to use and bored out to about 68-70mm.
Good luck
However, an ITR style manifold, or any single stage manifold, will give you an edge on the higher end by sacrificing the bottom to mid range. Either way, the stock gsr manifold is restrictive. So yes, you will see some noticeable gain with an ITR style manifold with the cam upgrade. Expect a sluggish low to mid range.
As for the larger throttle body, it's not needed with those mods. If anything, have it port-matched to the manifold you wish to use and bored out to about 68-70mm.
Good luck
Get the ctr/itr exhaust cam. Switch your intake arm into a simple 3" bend with a filter/stack. Be sure your exhaust flow is able to keep up with your intake. Chipped ecu or standalone of some sort - then tune!
Otherwise, to try and maximize your gain with those cams you would need a bump in compression, valve spring upgrade to raise the redline safely (that way you can utilize the power range of the cams), itr/si/ctr transmission (keep yourself in that powerband), and adjustable cam gears to make minor changes. You may want to get a larger TB (~64mm) by this time.
But, those are just a few simple things. You'll tap out at some point, which then you will need to switch cams and start planning again.
Otherwise, to try and maximize your gain with those cams you would need a bump in compression, valve spring upgrade to raise the redline safely (that way you can utilize the power range of the cams), itr/si/ctr transmission (keep yourself in that powerband), and adjustable cam gears to make minor changes. You may want to get a larger TB (~64mm) by this time.
But, those are just a few simple things. You'll tap out at some point, which then you will need to switch cams and start planning again.
Yea get the skunk2 or blox manifold. Followed by a jdm itr 4-1 header, chipped ecu to read up the cams,and a fpr and raise fuel up about 2psi. The car will scream nice. Youll like it dude.
Trending Topics
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by asianzt »</TD></TR><TR><TD CLASS="quote">Lets start off by saying that the stock ITR manifold will not fit a gsr head. This is given since the ITR has a b16a based head; it will not fit correctly.
However, an ITR style manifold, or any single stage manifold, will give you an edge on the higher end by sacrificing the bottom to mid range. Either way, the stock gsr manifold is restrictive. So yes, you will see some noticeable gain with an ITR style manifold with the cam upgrade. Expect a sluggish low to mid range.
As for the larger throttle body, it's not needed with those mods. If anything, have it port-matched to the manifold you wish to use and bored out to about 68-70mm.
Good luck
</TD></TR></TABLE>
WTF, first you say a larger TB is not needed, than you reccomend boring his stock TB to 68-70mm bore? The largest I would use on a mild build like this is a 65mm.
However, an ITR style manifold, or any single stage manifold, will give you an edge on the higher end by sacrificing the bottom to mid range. Either way, the stock gsr manifold is restrictive. So yes, you will see some noticeable gain with an ITR style manifold with the cam upgrade. Expect a sluggish low to mid range.
As for the larger throttle body, it's not needed with those mods. If anything, have it port-matched to the manifold you wish to use and bored out to about 68-70mm.
Good luck
</TD></TR></TABLE>WTF, first you say a larger TB is not needed, than you reccomend boring his stock TB to 68-70mm bore? The largest I would use on a mild build like this is a 65mm.
Thread
Thread Starter
Forum
Replies
Last Post
TruePlayaz114
Hybrid / Engine Swaps
16
May 25, 2002 03:12 PM




