I once read that when supercharging a vehicle that a header with short primaries works best. Now this was with an Integra GSR and a Jackson Racing SC. Does this statement still hold true for a centrifugal type blower? Is there even a company that makes a header with short primaries for the S2000? Has anyone here with an SC changed thier headers after getting an SC?
Thanks!

 

x-viper?

 

i read your post the first time through, bro. sorry i couldn't help. i put my header on before my SC.

 

Sorry, I didn't have an answer for you and still don't. I put on a Toda header after having my S/C for over 1/2 a year but I have not dynoed so I can't tell you anything concrete. My butt dyno told me there was no discernable difference.
I can see where this information is maybe more pertinent to a turbo application? Short runners here would make for faster spool up. I can't say for a S/C app.

 

I can't remember who it was, but you might do a search. I know that someone went from stock to Toda header and gained somewhere in the vicinity of 18hp.


Edit: I just found a thread, and it looks like it was "sky-chicken" that made those gains w/ the Toda header. I haven't seen any posts from him lately, though, so I don't know if he's still around.

 

I think you are right - it was "sky-chicken" but I also recall he had done some other mod or upgrade at the same time and the gain could not be attributed entirely to just the header.

 

and can you really trust someone who has the screen name sky chicken?

 

If I remember correctly they used to say that short primaries aid in low rpm torque as opposed to long primaries, dont know if this helps your question as a dyno would be best to prove this

 

I believe he upgraded his clutch and flywheel, along with the Toda header....too bad he didn't do a test with JUST the header....

see here: http://forums.s2ki.com/forums/showthread.p...&highlight=toda