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Location:
Brisbane
Registered:
June 2003
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exhaust for 7mge ma70
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Mon, 08 March 2004 08:37
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Whats the best size & style for me to get?
Starting at the front of the car, where the two pipes come down into the single pipe near the gearbox.
Thanks
Blake
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Registered:
August 2002
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 10:16
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pickup a set of extractors
then 2.5inch mandrel it straight through
depends how loud you want it really.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 10:50
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How bout you save it for the money pit that is your other car and then think about upgrading it...
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Location:
Brisbane
Registered:
June 2003
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 11:41
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my current exhaust has a hole in it, and as soon as ive got the other one running, ill fix it. AM wanting to know size etc in advance.
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Location:
Brisbane
Registered:
February 2003
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 12:52
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jeez, if you're only going to 2 1/2" then press-bends should suffice? i thought mandrel bend should only be an option if you couldn't get decent press-bent pipe?
anyway, i'd advise a hot-dog-style resonator after the CAT and your choice of noise box at the rear? Lukey or similar - something Oz made anyway.
btw: is the hole in the system or the manifold?
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Location:
Brisbane
Registered:
June 2003
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 12:58
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system near the cat i think 
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Location:
Brisbane
Registered:
February 2003
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 13:11
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there wa a recent thread on exhaust shops on boost cruising recently:
<http://www.boostcruising.com/forums/index.php?show topic=31094&hl=exhaust>
but remember most of that's site's membership (excluding MR DOHC) is 15yrs old and thinks there's a proportional relationship between sticker size, RWHP and penile length.
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Location:
Brisbane
Registered:
May 2002
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 13:19
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2.5" is about right, any bigger than that will be heaps louder with little or no benefit. You might want to consider a 3" dump into a 3" cat and then narrowing to a 2.5" cat-back system, but it depends on the size of the outlet on your extractors (no point going larger). Remember the first metre or so of your exhaust is the important bit, the rest is just there to channel the gases away from the passengers.
As for mandrel bending, I'd only bother pre-cat... after that press-bending will be fine. There aren't any sharp bends in an MA70 exhaust anyway.
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Registered:
August 2002
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Re: exhaust for 7mge ma70
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Mon, 08 March 2004 13:59
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After going under the car the other day......id say by either increasing the diameter of my exhaust to 2.5 or getting mandrel bends, i could increase flow by a fair bit, esp at the diff!
Currently have 2.25 press.
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Location:
Crawley, WA
Registered:
October 2003
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Re: exhaust for 7mge ma70
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Wed, 10 March 2004 08:18
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I just got a full 3" HKS Super Dragger Catback onto my GA70. It has 2 hi-flow resonators and sounds pretty good. Low bassy sound. Not too loud though. Get a 3" hi-flow cat as well as a DP and you are ready to rock 
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