Header Back Exhaust Q
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Joined: Jan 2002
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From: Bay Area, CA
Header Back Exhaust Q
I am kinda thinking if mandrel bend is really necessary for my header back exhaust (I already have a racing header). I am thinking about using 2.25[in] pipe w/o cat. Or should I just use crush bend for the simplicity and exhaust shop avaliability.
I know Racing Beat has an exhaust for my 79 RX7 but the price is way too expensive, plus I already have a Sebring straight thru dual tip muffler - it will look good on the car.
So what do you guys think? 2.25" crush bend or mandrel bend?
Thanks.
I know Racing Beat has an exhaust for my 79 RX7 but the price is way too expensive, plus I already have a Sebring straight thru dual tip muffler - it will look good on the car.
So what do you guys think? 2.25" crush bend or mandrel bend?
Thanks.
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Joined: Jun 2002
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From: Saskatoon, SK & Montreal, PQ
mandrel bending makes for a FAR smoother exhaust flow (which reduces backpressure)
In addition, crimped-bend narrows the exhaust causing further restriction, and creates neat little pockets for vapor to trap and rust through your pipe in no time.
The RB stuff costs more initially but chances are it will outlive the car, and has a proven performance gain.
A kweshtin: is the Sebring muffler rotary specific? If not the high temp exhaust put out by a rotary will destroy that muffler faster than you can say "I should have bought the right parts"
In addition, crimped-bend narrows the exhaust causing further restriction, and creates neat little pockets for vapor to trap and rust through your pipe in no time.
The RB stuff costs more initially but chances are it will outlive the car, and has a proven performance gain.
A kweshtin: is the Sebring muffler rotary specific? If not the high temp exhaust put out by a rotary will destroy that muffler faster than you can say "I should have bought the right parts"
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Joined: Jan 2002
Posts: 100
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From: Bay Area, CA
Originally posted by Manntis
mandrel bending makes for a FAR smoother exhaust flow (which reduces backpressure)
In addition, crimped-bend narrows the exhaust causing further restriction, and creates neat little pockets for vapor to trap and rust through your pipe in no time.
The RB stuff costs more initially but chances are it will outlive the car, and has a proven performance gain.
A kweshtin: is the Sebring muffler rotary specific? If not the high temp exhaust put out by a rotary will destroy that muffler faster than you can say "I should have bought the right parts"
mandrel bending makes for a FAR smoother exhaust flow (which reduces backpressure)
In addition, crimped-bend narrows the exhaust causing further restriction, and creates neat little pockets for vapor to trap and rust through your pipe in no time.
The RB stuff costs more initially but chances are it will outlive the car, and has a proven performance gain.
A kweshtin: is the Sebring muffler rotary specific? If not the high temp exhaust put out by a rotary will destroy that muffler faster than you can say "I should have bought the right parts"
My wife bought me 2 RX-7s
Joined: Aug 2001
Posts: 2,328
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From: Saskatoon, Saskatchewan, Canada
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