Incorrect extractors

Daddyo
Posts: 2
Joined: Thu Jan 10, 2013 10:32 pm

Incorrect extractors

Postby Daddyo » Tue Apr 09, 2013 2:15 am

Hi fellas, can anyone detail what happens when the WRONG extractors are fitted to a 100kw Redtop. By wrong, I mean that a 4 into 2 into 1 system where pipes 1 and 3, and 2 and 4 are joined instead of the conventional 1 and 4, 2 and 3. What effect would it have on power, will the engine run hotter, will the pipes run hotter? And, why is it that it needs to be 1/4, 2/3 regardless of what 4 cylinder engine it is, and regardless of whether it fires 1342 or 1432?

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cmt1390
Club4AG Regular
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Re: Incorrect extractors

Postby cmt1390 » Tue Apr 09, 2013 5:12 pm

uneven sounding exhaust.......... like a subaru and unequal back pressure..... theirs a reason 4-2-1 and 4-1 headers exist

http://auto.howstuffworks.com/question172.htm
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Daddyo
Posts: 2
Joined: Thu Jan 10, 2013 10:32 pm

Re: Incorrect extractors

Postby Daddyo » Thu Apr 11, 2013 2:28 pm

Thanks for the link. But I'm still mystified as to why the firing order, and hence, pulses, doesn't change the joining order of the pipes, it's always 1 and 4, 2 and 3, on a 4/2/1 system on a 4 cylinder engine unless it's full race with a straight 4 into 1 system. Any one else got ideas?

eightsixgts
Club4AG Enthusiast
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Re: Incorrect extractors

Postby eightsixgts » Fri Apr 12, 2013 2:36 pm

You need to research how exhaust gas pulses work, and how they are taken into consideration when designing a header.

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KonaTrueno723
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Re: Incorrect extractors

Postby KonaTrueno723 » Sun Apr 14, 2013 12:40 am

Interesting..i've looked at one of those $1500+ headers from JSP, hasselgren, ect. & i see a well tuned, equal length, placement order of pipes..maximizing scavaging....?

Sure wished my headers looked & performed like these bad boys 8-)
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