Last research I did on the subject, the kamikaze was the king of headers for blowers. I don't know if their design was intended for such or if they are just some cheap company whose product just happened to make good power for blown applications..... due to their short fat primaries in a 4-1 configuration.....

Anyway, it seems like TOO/ endyne has pushed them for a long time. But all I've seen is 2.5" collectors for that application.

http://www.theoldone.com/components/kamikazi

Seeing as how turbo applications are always looking for 3" downpipes as upgrades, I'm wondering why kamikaze headers aren't sold with a 3" application as well..... bigger is better, right?

Or does the piping you spec have to do with the type of blower you run? Roots vs centrifugal?

Anyway, I took this vortech blower equipped cw itr up to http://www.mainstreamperformance.com last night for Charles to look at and fab up something. Off came the oem jdm 4-1 and in it's place went the kamikaze. But we decided to cut the collector on the kamikaze (where the 4 merge into 1) and make it 3" instead. Then he did full 3" 'downpipe' to the 3" thermal exhaust. What a monster!

Thoughts?


Modified by Black R at 12:38 PM 4/1/2005

 

The 3" collector setups are all custom AFAIK. I'm not sure of the benefit, but one of the main drawbacks is sound. Every supercharged car I've heard has a loud exhaust (mine did). I'm not sure how much boost you plan on running w/ the vortech, but IMO it would be a worthy upgrade for flow in general. See ya tomorrow guy.

 

I think it depends on your HP goals...

Turbo exhaust is larger to help spool the turbo......not just for flow...bigger piping diameter creates a bigger pressure difference between hot and cold side which in turn makes the turbo spin up faster....


so with a supercharger I think exhaust is more toward the n/a side....2.5 should be plenty for 250 whp I would think.....??