since theres like NO useful threads on this site anymore on how to do this. figured id make one.

pic of the biggest required modification


there used to be a big chunk of aluminum right there that covered the whole opening. had to drill it out then smooth it all out with the sanding bits of the dremel.

next you can see why the RACE gasket was necessay when using the ITR manifold on the GSR head


as you can see the ITR mani wouldnt even cover the coolant hole. so the race gasket covers it up for me. i put some RTV sealant/gasket maker on there (you can see it comming out below the gasket) just as a little extra insurance so it wont leak.

shot of the mani/head combo.


overall it was fun making this work. im glad i ditched the plate idea. it had potential, but in the end this is the better solution. dremel and a hand drill were all that was needed to make this happen. just used the gaskets as a template, drilled the holes off it, then used the dremel to "fudge" the holes since some were slightly off from the bit walking or whatever.

anyone has any questions feel free to ask

and before anyone asks, yes i know about skunk2/blox/AEBS intake manifolds but HC rules done allow it.

 

I think I remember your thread from the allmotor forum..... you did spend some considerable time on adaptor plates, but this seems to work well enough and still stay within the confines of the rules.

Are you allowed to port the IM any?

And is cutting off that part of the flange that covers the port on the head acceptable?

I know that some people weld a port/ bung on that port and either cap it off or run it separately.

Finally (and this seems of greater concern), what did you do to deal with the different angles of the entry runner ports for the itr vs gsr IM? Did you angle mill the flange a couple of degrees?

 

i didnt mess with the angle stuff. its not gonna affect THAT much. the gsr is what angled down? while the ITR is a little more straight right? and portmatching the manifold is allowed, but cant go further then 1" into the manifold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRCRXsi &raquo;</TD></TR><TR><TD CLASS="quote">
next you can see why the RACE gasket was necessay when using the ITR manifold on the GSR head
</TD></TR></TABLE>

Nice write up!

Do you have any pics of the GSR gasket on the IM?

The finished product looks good but there are no pics of the dremel work you needed to do.

Also what is a RACE gasket? Is that a manufacturer's name?

This thread helped a lot.


Modified by JohnnieChimpo at 3:20 PM 4/11/2006

 

the dremel work is in the very first pic. that section on a stock type r mani is completely covered over. i simply dremeled it out. you can tell by the finish that it has been dremeled.

the gasket is a hondata gasket. it is the race version, where the coolant port is closed up. this was necessary because of the vastly different coolant port locations on the 2 heads.

 

I'm sorry, I thought the dremel work you did was so the water pipes line up.

I understand what you did now.

 

need any help feel free to ask

 

very nice work

 

Nice work but why not just buy a Skunk 2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rene M &raquo;</TD></TR><TR><TD CLASS="quote">Nice work but why not just buy a Skunk 2? </TD></TR></TABLE>

^ your joking.

Reading can save lives

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote"> and before anyone asks, yes i know about skunk2/blox/AEBS intake manifolds but HC rules done allow it. </TD></TR></TABLE>

 

nice write up.. i have the skunk2 on my gsr head.. i wonder since the ITR and the skunk2 mani look so much alike.. is there any difference overall in performance between the 2?

 

the grs ports and itr ports dont match, what did u do about it?

 

Oops my bad.. I will go crawl back under my rock now..

 

where do you bought your hondata race gasket?

 

Do the GSR and non-VTEC LS/CRV heads use the same bolt pattern? (It never occurred to me they would...)

FYI: The Skunk2 manifold really DOES seem like it warrants a clause in the HC rule book for LS/CRV headed engines in H1. I've spoken to some rules committee guys about considering it. But it needs to start with a back to back dyno test between the Skunk2 and modified ITR manifolds to assure there's only an advantage of cost or convenience.

Any volunteers?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekek888 &raquo;</TD></TR><TR><TD CLASS="quote">the grs ports and itr ports dont match, what did u do about it?</TD></TR></TABLE>
x2??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thawley &raquo;</TD></TR><TR><TD CLASS="quote">Do the GSR and non-VTEC LS/CRV heads use the same bolt pattern? (It never occurred to me they would...)

FYI: The Skunk2 manifold really DOES seem like it warrants a clause in the HC rule book for LS/CRV headed engines in H1. I've spoken to some rules committee guys about considering it. But it needs to start with a back to back dyno test between the Skunk2 and modified ITR manifolds to assure there's only an advantage of cost or convenience.

Any volunteers?</TD></TR></TABLE>

HC had the original design tested 2 years ago against a stock ITR and it made 1 more hp which is noise on the dyno, the fact they still can't make up there mind is bad management

The new pro1 design is supposedly a little better so it may be a different question

 

i havent checked this is a while, sorry, lol.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekek888 &raquo;</TD></TR><TR><TD CLASS="quote">the grs ports and itr ports dont match, what did u do about it?</TD></TR></TABLE>
i bought a stock GSR gasket. lined up the ports between it and the ITR manifold, and drilled my holes based on that, so i knew the ports would be lined up. i did not just base it off the bottom 4 holes like some other people have. this does lead to the ports being "off". you just line everything up based on the bottom 4 holes the floor of the ITR ports are lower then the floor of the GSR ports. i lined everything up based off the ports and just centered them.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Garrett &raquo;</TD></TR><TR><TD CLASS="quote">where do you bought your hondata race gasket?</TD></TR></TABLE>
kings motorsports. they dont list it on their website, but they can special order it for you. i just called them and explained what i needed. and they ordered it from hondata. just explain it to him on the phone and explain that hondata still makes it and everything and you should be good to go.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by : alexander : &raquo;</TD></TR><TR><TD CLASS="quote">HC had the original design tested 2 years ago against a stock ITR and it made 1 more hp which is noise on the dyno, the fact they still can't make up there mind is bad management

The new pro1 design is supposedly a little better so it may be a different question</TD></TR></TABLE>
i dont mind the whole issue. i know it sucks, since this way is a lot harder and you have to do a little fab work to make it work, but i didnt mind. rules are rules.

 

just figured id update this.

the gasket wasnt sufficient enough to seal against the coolant port. so it leaked. im 99% sure it was because there wasnt anything backing it. so i tapped the port on the head to 1/2" npt and plugged it. all sealed up now