What Extractors Do/would You Run

[beerhead]

I'm working on a design for a set of pipes for my 3S / KE70 project. What do you think? Anyone done this kinda stuff before? I'm interested to hear anyones experiences who've run similar motors with both varieties of extractors.

 

:y:

Edited August 29, 2009 by beerhead

[Felix]

Seeing as you are building from scratch you should consider 4into1's with an oversized anti-reversion stepped design off the exhaust ports.... Best of both worlds.

[KEI069]

The 4-1 design is definately the way to go but i have never seen proof of stepped

headers offering any advantage at all, except in bracket style drag cars where the

header design is set perfectly with engine specs. A proper set of tuned 4-1 will

work better on just about every application, you could look at using a merge collector

though for maximum horsepower

[OniBerserker]

this is what i have read, it is about k engines but should be applicable, maybe

blown5k on club-k (from memory) makes his own extractors. i remember reading that the longer the 2-1 section of the 4-2-1 the more it draws out torque delivery and less power in the top end

 

 

not sure if that helps at all

[philbey]

wow they are nice!

[kiahn]

from everything ive read, if your building something that is going to rev hard then go 4-1 as they have best top end power figures

if your using it as a street car only with occassional track use but not pushing it to the rev limiter then go 4-2-1 as they can be easily tuned the same way as what oniBeserker explained

 

P.S i think 4-2-1 look better, got them on my 4age painted black and they look sweet!

the top brands seem to prefer the 4-1 design as 4 cylinders are made to rev normally

hope that helps

Edited August 31, 2009 by kiahn

[OniBerserker]

wow they are nice!

 

what can you say, the man is an artist.