I'm about to swap in a b18c1 in place of my standard b16a.
I would prefer to run the b16a computer, given that it has rich fuel map, 8800rpm revlimit and no 180km cutout. However, using this will leave me unable to open/close the secondary butterflies on the b18 manifold...
So..
I was thinking about modifying the b16a intake manifold to fit the b18. Has anyone done this successfully? I can't seem to find much info on this (seems like people just can't be bothered and buy Skunk2 ones instead). Will I be able to get away with just cutting off the flange and welding on a flange to suit the b18c1 head?

 

Alright Bro, the way most of us should be thinking is: "lets do this the right way the first time so there will not have to be second." You are better off buying the skunk 2 manifold or hope that a ITR manifold appears cuz if you have not really found anyone that has done custom work to a manifold its probably because it is not a good idea. Trust get the Skunk 2 or ITR you will be happy.
By the way if you wanna get real crazy buy the AEM computer its worth the 1000 bucks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRVTEC96 &raquo;</TD></TR><TR><TD CLASS="quote">Alright Bro, the way most of us should be thinking is: "lets do this the right way the first time so there will not have to be second." You are better off buying the skunk 2 manifold or hope that a ITR manifold appears cuz if you have not really found anyone that has done custom work to a manifold its probably because it is not a good idea. Trust get the Skunk 2 or ITR you will be happy.
By the way if you wanna get real crazy buy the AEM computer its worth the 1000 bucks.
</TD></TR></TABLE>

The ITR manifold wont fit either, same pattern as B16

 

Xsi is right, the itr head is basically the same as the b16a head, not the b18c1, thus its a no go.

I have a spare b16a intake manifold which I don't mind hacking up. I have access to machine shop tools.

Living on the other side of the world, importing US made items such as the skunk2 manifold becomes expensive - once i pay shipping and tax, it becomes a rather expensive exercise.

 

why not buy a skunk2 manifold??

 

Did you try Adam from AMG and NZhondas? he might be able to get you a deal on a Skunk2 manifold. Otherwise, I think I saw a few cheap B18C manifolds on the http://www.nzhondas.co.nz parts exchange but it's down atm.
I was reading a while ago that the B16a and b18C have different port sizes and positioning and it really wasn't worth trying to make them fit, I guess if you have a spare manifold and the right tools you could give it a go anyway.
Let me know if you have a spare IACV off a B16A2 or B18C since I'm after one to fit an ITR manifold