why not buy cusco from AJPS and know u are getting a quality and porno product??
Hey guys,
I'm getting some headers built soon, but do not have much of an idea on how to calculate the correct length header to get some extra usable power where i want. Surely, there is an equation or a calculator where I can find out what I need to know. I am happy with 4-2-1 or just 4-1, but I need to be fairly sure about design length, pipe dia and collector length, as they will not be cheap to get made. Any help is very mych appreciated! Even pics or sizes of what you guys have found successful would be great. Thanks in advance!
why not buy cusco from AJPS and know u are getting a quality and porno product??
MY AE86 BUILD
http://www.ae86drivingclub.com.au/fo...read.php?t=229
** gets a seat and waits for Sam **
I need to put it in a ta22 and extractors to suit ae86 foul on my steering idler arm.... Modification of an existing set of extractors may be an option, but it may well be neater/cheaper to get them built from scratch.
calculators are pretty abundant if you dig. problem is its not as simple as punching in a few numbers.
whoever is making them should really have a pretty good idea of whats needed. otherwise, dont stray too far from whats available for 4ags in 86s and you should be sweet.
78's
<div class='quotetop'>QUOTE (slydar @ Dec 26 2007, 09:24 PM) </div>
The guy making them makes excellent quality headers. He uses mandrel bends and understands the importance of each pipe being equal length, and says each will be be within 5mm of each other. He understands and uses a different pipe position in regards to firing order at the collector.
He asked the question if there were existing successful extractors on similar setups. It is possible to play with different lengths on a dyno, but obviously, this is not a cost friendly option.
Obviously there are various factors that influence the tuning of a set of pipes, but there shouldn't be too much difference between 4age 20v models. If I don't get any feedback here, I'll be going for aproxx. 700mm... As it is the only feedback I have recieved...
It just would have been nice to have some results to base this decision on, before I outlay hundreds of dollars...
have a look through samq's build thread... he has a fair bit of detail on the design he did for his custom extractors... i think he made them himself. he listed lengths and benefits of 421 or 41
sam where are you? hahaha also the article on about extractors may also be a help
shell drake i have both TRD copies and some blining Fujitsubo extractors in my posession i'll measure up both their pipe lengths tomorrow. The Fujitsubo has longer pipes from memeory, both are 4 into 1.
<div class='quotetop'>QUOTE (shelldrake @ Dec 25 2007, 08:37 PM) </div>when u say steering idler arm im guessing ur running recerculating ball steering and that ur steering rod is stopping the exhaust pipe from connecting to the manifold? i have the same problem on a 16v all im doing is standard manifold with angle grinded exhaust pipe to clear the steering rod. its not tunned but im to lazy ud have to take it to a exhaust shop for that
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