The things you want to have with these V6s are good flowing collectors that feed into a big enough Y pipe with good a junction where the right header meets the lelt header. IE, 2" left, 2" right into a 2.5" down pipe. Such will give you great flow and good sound.
I can vouch for this. My Fiero (which has a 3.4 V6) has the Trueleo headers and a 2.5" exhaust. People often ask me what kind of V8 is in there. Dyno results also show that the Trueleo headers improve torque in the upper RPM range.
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09:25 AM
mender Member
Posts: 299 From: Didsbury, Alberta, Canada Registered: Nov 2010
Could you make up a set of headers for the 2.8/3.4 PR that sounds like this? I am not so much after the performance, but this sound. I have a Mera and this would be the ideal sound coming from its pipes. There are some pics of the system posted on Pennocks but I am not sure of the routing. Some pipes do cross over to the opposite bank and then are grouped. It sounds like each exhaust pulse is being heard in sequence (1,2,3,4,5,6). Is that possible?
A straight six, not a V-6 but the principle is the same: equal length, in this case six into two into one with all lengths matched. Another set of headers on the same engine with unequal length headers gave it an industrial (tractor, Harley, V-8) sound rather than the euro sound.
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11:16 AM
phonedawgz Member
Posts: 17091 From: Green Bay, WI USA Registered: Dec 2009
Could you make up a set of headers for the 2.8/3.4 PR that sounds like this? I am not so much after the performance, but this sound. I have a Mera and this would be the ideal sound coming from its pipes. There are some pics of the system posted on Pennocks but I am not sure of the routing. Some pipes do cross over to the opposite bank and then are grouped. It sounds like each exhaust pulse is being heard in sequence (1,2,3,4,5,6). Is that possible?
I have a previous thread on this exact setup and so does rick88. I've talked to tom " the owner of that car" I have a ton of photos on the setup unfortuinitly they are engine bay shots kinda hard to look thru. Anyhow I have made a set myself basing off his design a slight bit different but collected the same cylinders as him. My motor is almots complete. Just finishing powdercoating and mounting my supercharger. I used 1.5in primarys collect to 2in at stock cross over and then join the front manifold which is 3in collector and I plan to run a obx resonator. "They seem to be the thickest packed" to muffle the open tone. Hopefully I can accomplish the sound with all the help he provided me with photos.
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01:07 PM
mender Member
Posts: 299 From: Didsbury, Alberta, Canada Registered: Nov 2010
Not quite sure how unequal lenght headers will make my engine sound like it was engineered in the early 20th century.
If the tubes aren't equal in length, the exhaust pulses will take a different amount of time to get to the collector and can overlap. By having exhaust pulses close together or overlapping, the sound is no longer even and clean but takes on a chugging quality, Some people like that, some don't.
[This message has been edited by mender (edited 11-17-2010).]
I have made a set myself basing off his design a slight bit different but collected the same cylinders as him. I used 1.5in primarys collect to 2in at stock cross over and then join the front manifold which is 3in collector and I plan to run a obx resonator.
Pictures would be nice... links to your thread even better.
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04:07 PM
TXGOOD Member
Posts: 5410 From: Austin, Texas Registered: Feb 2006
