Hey guys I've got a cracked exhaust manifold and I'm going to buy a set of headers for my d16z6 and I was thinking of cutting the factory exhaust manifold right at the flange and take a drimmel to open up the ports then buy piping and have it welded.
I have access to a welder and pipe bender..
my question is what size piping should i use for the custom header for a stock N/A d16z6 application ..and my other question is what type of header design is best for peak performance.. and sry if this has been covered before
i searched but nothing came up...some pix of custom headers would be nice..
P.S. I know this sounds kind of like a waste of time I know I should just buy a header for it and call it quits but I want to do this just for learning experience..

 

if your going to build your own header, just spend the extra 20 bucks and get a new head flange as well. dont use the factory flange.

 

I have a couple of nice custom headers in my shop right now, one's an SMSP that belongs to a friend of mine and the other is an OPM made for an ITA car, CRX Si with a D16A6, it now belongs to another friend of mine. I just have them for dent repair and ceramic coating, but I took some pics for my CRX forum to compare and show what a nice header actually looks like.

SMSP for a NA Z6/Y8 and an OPM for a ITA D16A6:


From left to right, stock D16Z6, OPM, SMSP:







(reversed, of course)

 

downest, awesome work!!!

 

if you have the money and want the best money can buy, contact burns stainless and fill out their form and they will set you up with a one off header specific to YOUR setup. trust me, you will be satisfied

 

It's not my work, like I said in the above post.

 

http://www.maxracesoftware.com/pipemax36xp2.htm

Best $40 you'll ever spend.

 

Has anyone on here used this software?

 

yeah we used it for our first header on our super stock. then this past season went with the route of filling out the form at burns and made a header using their blue print and wow. what a waste of 40 bucks in the beginning.