I tried searching for threads on this but couldnt find anything. That being, my question is what all is nessacary to do to use a ITR manifold on a GSR head? Would it even be worth going thru the trouble of doing it? thnx

 

ive done it. not too hard. just redrill the flange on the ITR to fot the GSR head. its best to get an ITR intake mani gasket and line the ports up and drill the holes based off of the lined up ports. DONT line up the bolts based on the bottom 4 bolts, they line up but the ports will be off and thats more important. also i had to plug the coolant hole. theres really no way to make it work. now for the thermostat, since you plugged that hole you are going to have to Tee off one of the heater lines (the one comming from the firewall to the head) and run that to the thermostat so your car doesnt overheat. to plug the hole i tapped the coolant port to 1/2" NPT and plugged it up. i had to trim the flange on the ITR mani a bit to clear it. now you could proably get a 1/2"NPT->hose adapter and avoid Tee'ing the heater line, but i just went ahead and plugged it.

good luck

 

Thanks man. Are there any advantages to running an ITR manifold over a GSR tho?

 

the ITR is better. flows better

 

would fitting a gsr im on a b16 head be just as easy?

 

stock 64mm inlet, shorter runners, more plenum size and a cnc'd version
that flows rediculous cfm can be had now for reasonable money from a
stock unit dont expect much more power, you will have to
tune the ecu to see everything from the manifold change. if you dont,
you will lose midrange big time since the GSR manifold's main objective
is to provide that missing TQ.

I wonder if anyone has any before and after graphs with a ported GSR IM?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by an2ny888 &raquo;</TD></TR><TR><TD CLASS="quote">would fitting a gsr im on a b16 head be just as easy?</TD></TR></TABLE>

WTH for??? you'd have to port match the B16 head to make the GSR manifold fit. the GSR manifold also has the secondary butterflies in there...did you know that? also, that manifold is meant to run on a 1.8 motor...not a 1.6. hope that helps out.

 

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

I wonder if anyone has any before and after graphs with a ported GSR IM?</TD></TR></TABLE>

damn i had a before and after of a gsr with the IAB removed and put back together with shorter hardware. it exactly what you would imagine. couple hp lower in the middle, 3-4 higher up top. nothing that would part the sea.

 

why would you go through the trouble when you can pick up a blox/aebs/skunk2 manifold for cheap?

 

maybe he wants to race HC, like i do. thats the reason i did it.

 

Maybe in the future The reason i asked is ive seen a few people say they use an ITR manifold in their set-ups and wondered what the benefits were. I shouldve been more clear in the first post, but i meant would an ITR manifold (Aftermarket or OEM) have substanial benefits over an Aftermarket or OEM GSR manifold.