4AGE Extractors

[z0ton]

Just wondering if you guys think these extractors are any good?

http://www.trademe.co.nz/Browse/Listing ... =100402419

[crispy'86]

they'd be good depending on the situation, is your car being used for street or the track? Track they'll be good as a 4-1 design for better gas flow and slight increase of torque , note/ very slight increase, not noticable but good flowing setup, what i use on my fx race car and i notice an improvement

[z0ton]

they'd be good depending on the situation, is your car being used for street or the track? Track they'll be good as a 4-1 design for better gas flow and slight increase of torque , note/ very slight increase, not noticable but good flowing setup, what i use on my fx race car and i notice an improvement

Street car. So is there disadvantages?

[Mr Revhead]

4-2-1 for midrange (ie torque)
4-1 for peak HP....

really need to look at collectors to see if they will be any good
but id say they would more suit a track application.... ie top end gains.

for a street car, i think youd be better off going with 20v extractors and a custom 2-1 sectin.

[vvega]

if your into dragging ya mates you may find teh 4 -1s more benifitial
i respectcfully disagree with teh above posts as requited buy teh rules of the forums
you cannot tell anything about extractors by the collector
teh primary size and length is the sole desider on how extractors make there power

it is posible to gain midrange if your primarys are sized apropreatly in a set of 4:1's
those particular extractors looke to be of eth rage 4age varity and many peopl have had good gains and results from useing them in road cars

under the rule

If you post blatantly incorrect or misleading technical information it will be removed.

i respectfully ask that above offending parts of teh post be ommited untill such time that teh publisher can show veriforcation of his ability to determin extractor suitibilty from examining teh collector


i do however agree that a 20v system with a custom 2-1 can yield good results
ive made a couple such systems with good results
feel free to pm or ask in threed for teh dimentions used in this example

wayne

[mister2]

L O L

Fairly obvious why this forum dissolves into morons discussing pod filters when knowledgeable (albeit assholes ) people are banned for posting their experience.

In my experience, collectors make a difference where gas flow efficiency is crucial (eg, turbocharged applications), whereas in NA applications it is the sectional length in combination with the cam timing. Look into "unsteady flow", there is a fantastic book on the subject by Prof. Blair (The Design and Simulation of 4 Stroke Engines).

Cheers

[Mr Revhead]

welllll not quite what happened..... theres a LOT more to it than just one thread, comments were taken out of perspective and context.
anyway, this isnt the place for that discussion



my comment re the collectors was merely meaning that for all we know its a total bodge job in there.... ie workmanship etc, NOT nessicarily the design.....

its kind of common knowledge that primary length/daimeter etc are a pretty important part of them....

[Mr Revhead]

btw... z0ton... have you an answer to your question? or are you still confused?

[z0ton]

btw... z0ton... have you an answer to your question? or are you still confused?

Yea its pretty much been answered. I just don't really understand why 4-1s wouldn't be good for street use on a 4agze...

I think ill just stick to the 20v extractors anyway.