sorealsosurreal Posted March 12, 2009 Share Posted March 12, 2009 Since we are on the subject of exhuast note, anyone know what an l28 with a 40 series flowmaster would sound like, or better yet has anyone done it!? And are they happy with the tone or does it just sound like crap? Quote Link to comment Share on other sites More sharing options...
datsun723 Posted March 13, 2009 Share Posted March 13, 2009 Since we are on the subject of exhuast note, anyone know what an l28 with a 40 series flowmaster would sound like, or better yet has anyone done it!? And are they happy with the tone or does it just sound like crap? here you go! Quote Link to comment Share on other sites More sharing options...
datsun723 Posted March 13, 2009 Share Posted March 13, 2009 Yes sir! Doubles as a seat heater Nothing like coming of redline at night and seeing the blue cone light up the road in your side view mirror... Haha that's wicked. I know that my Z backfires when coming off higher rpms but I don't know whether or not anything can be seen projecting outward of the tail pipes haha Quote Link to comment Share on other sites More sharing options...
datsun723 Posted March 13, 2009 Share Posted March 13, 2009 btw, found this video on youtube. sounds pretty much like my Z and until I get some video of my own...here are the twice pipes and how they sound. pretty darn close to straight pipes and are perfect imo. Quote Link to comment Share on other sites More sharing options...
boardkid280z Posted March 13, 2009 Share Posted March 13, 2009 ... pretty darn close to straight pipes ... "Twice pipes with glasspacks and no cat. " - youtube description That's going to be noticeably quieter and less harsh than just straight pipe(s). I am curious though, how the tone, volume and harshness would compare between dual straight pipes (2" or 2.25 or something) and a single straight pipe (2.5" or 3") on an N/A. Is it about the same, or do they sound pretty different? Quote Link to comment Share on other sites More sharing options...
sorealsosurreal Posted March 15, 2009 Share Posted March 15, 2009 here you go! That doesnt sound to bad, although Im sure mine will sound diffrent since Ive got a turbo and a cat. Quote Link to comment Share on other sites More sharing options...
datsun723 Posted March 16, 2009 Share Posted March 16, 2009 it sounds too muffled for me. definitely has that quiet until wot feeling though Quote Link to comment Share on other sites More sharing options...
josh817 Posted April 25, 2009 Share Posted April 25, 2009 Videos of an open 6-1 header on my 3.1L First drive on the new motor: http://www.youtube.com/watch?v=_BXs1svOc5s First start up doing timing and such: http://www.youtube.com/watch?v=bHAyvZ5CR5k Just a month ago or so, motor is broken in by now idle at 1300 RPM no video since I heard sirens where I was at after I had gotten home, don't want people to know : http://www.youtube.com/watch?v=Jbcs-Ar_eZs With a 3" pipe and muffler: http://www.youtube.com/watch?v=asM-MVAg9LA Quote Link to comment Share on other sites More sharing options...
datsun723 Posted April 26, 2009 Share Posted April 26, 2009 Haha, very nice Josh. Sounds beastly!! Quote Link to comment Share on other sites More sharing options...
josh817 Posted April 26, 2009 Share Posted April 26, 2009 The raspiness of the larger cam can't really be heard because my idle is high and I made the collector on the 6-1 a 3" rather than 2.5". Quote Link to comment Share on other sites More sharing options...
Careless Posted April 26, 2009 Share Posted April 26, 2009 sounds great josh. nice work =) Quote Link to comment Share on other sites More sharing options...
josh817 Posted April 26, 2009 Share Posted April 26, 2009 So speaking of straight pipes, I know old IMSA NA Z's had like megaphone tips on their dual 2.5" pipes correct? This is a big time aid in the scavenging effect so here comes the question, for my motor (the larger ones of our L6's) with the ported head and moderately radical cam I have a Cyclone header fixing to go on: Courtesy of Frank Honsowetz How to Modify your Nissan/Datsun OHC Engine This sort of applies to both open pipes and a muffler of some sort, do you run the two collectors into one 2.5" pipe, maybe 3" pipe, or do you run dual 2.25" pipes. If you want each firing cylinder to alternate collectors (1-2-3 and 4-5-6 per collector firing order 1-5-3-6-2-4) to air in the scavenging effect, then I'm not sure why you would merge the two collectors into one pipe. Doesn't that just make your 6-3-2 header into a 6-3-2-1 AKA 6-1 header pretty much..? I see Zredbaron has a single 2.5" pipe and his head is from Sunbelt so the port job is of high quality, but then I heard somewhere from like Rebello or someone else who had a 3.2L that said a 3" pipe is essential. Right now my 3" pipe gives me a deep tone and at idle there is zero rasp to the idle, its more like all one tone. I would like to infer that if you can't hear a the raspiness/cylinder firing in the exhaust then that could generally mean your pipe is too big and those exhaust pulses are just mingling with each other in the pipe before they exhaust so what you hear is a purrrr rather than a lumpy sort of tone. Cancel all that talk, searchy searchy is your friend! :/ Should have known that by my own signature, shame on me. Quote Link to comment Share on other sites More sharing options...
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