Retro-question regarding dividing undivided headers
 

What is the dimensions/width of the 'divider' in a T4 flanged, divided header?

I put in 3/8" plate in mine but want to make sure that it is not supposed to be narrower choking top-end horsepower.

Here is the before and after (2nd is iPhone pic):

http://forums.pelicanparts.com/uploa...1293722253.jpg
http://forums.pelicanparts.com/uploa...1293722285.jpg

It sounds like don't have your turbocharger yet. The port shape varies between Turbonetics, Garrett etc. Since you have plenty of meat in your divider you can do a nice job and port match your header and your turbine inlet.

This is Turbonetics T4 split:
http://www.members.shaw.ca/fstrnu/turbodelete1.JPG

Yep, don't have one yet. Thought the dimension would be universal.

Thanks!

I was always under the impression that they were universal- but like Jim said- would make for some nice port matching...

Yeah, very true