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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: randy mohawk on May 27, 2012, 05:59:57 PM

Title: 1 3/4" or 2" exhaust pipe for headers
Post by: randy mohawk on May 27, 2012, 05:59:57 PM

Hi i'm going to be buying Doug Thorley headers for my 87 samurai and was wondering which is the best setup for this header? some say 2" pipe  is good others say 1 3/4 " for back presure. also which exhaust combo( cat back) has the best deep sound
out  there ?I'm looking for great performance and sound .

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: weldboy on May 27, 2012, 09:56:57 PM

I have 2" on my 86 Samurai with a magnaflow muffler and it runs great. ;D

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: talonxracer on May 28, 2012, 05:14:08 AM

I havnt seen a commercially available exhaust that addresses both sound and power. Your choices are limited, stockish sound and power, or an obnoxiously loud fart box. Custom is the only way to go. I would grab a 2" pipe kit and a Dynomax VT muffler(2.25" inlet/outlet). This allows for back pressure where needed when at low rpm's and cruising without sounding raspy or droning, while still opening up fully during WOT to allow maximum scavenging and peak whp.

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: vw505 on May 28, 2012, 06:35:07 AM

Are you running a cat?

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: SineCredulitas on May 28, 2012, 10:54:44 AM

Got DT and 2" on mine. Loud and fast. I think I have the magnaflow (PO installed).

Talon's got the idea...

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: talonxracer on May 28, 2012, 12:29:40 PM

Absolutely running a cat, a spun mettalic core Magnaflow. It actually provides the same restriction as a straight 2" pipe.

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: randy mohawk on May 28, 2012, 02:59:03 PM

cat should elimate the smell of the exhaust fumes  right. cause it does smell strong fumes with bikini top on .

Title: Re: 1 3/4" or 2" exhaust pipe for headers
Post by: talonxracer on May 28, 2012, 04:52:46 PM

It doesnt remove all the smell of exhaust fumes, but does remove the obnoxious sulphur smell.