cjandura

iTrader: (3)

what i'm looking for is any pictures of a oe muffler cut open.what i'm upto is I found a supplier of SS muffler parts to build your own custom units.so to do that i would need to see how the oe unit is designed inside and hopefully build one so i can get rid of this darn Megan drone and once again enjoy driving the car.my plans are to build it oe style with a 2.5" in and dual 3" out and the way i see it the parts list they use for a basic example only comes to about $55 and plus I get the satisfaction of saying hey I built that(if it sounds good).

T_Behr904

I remember seeing a thread on this once. I did some Google searching and that's how I came across it. The mufflers are a variable capacity design. At low rpm, the exhaust flows through one set of pipes, then at higher pressure, a flapper valve opens and it flows through both tailpipes. I'll see if I can find it...

T_Behr904

Found it!

http://forums.maxima.org/5th-generat...r-exposed.html

Scottwax

iTrader: (8)

Looks similar to how a turbo muffler looks inside, but turbo mufflers have larger internal tubes, usually only 3 and some sort of deflector to guide the exhaust flow into the next interior tube. Still, for an OEM design, it appears to have decent flow potential.

cjandura

iTrader: (3)

Thanks for the find.i must of not been using key words when i searched.wonder where i could find that flapper at?

Rods03Max619

iTrader: (5)

That looks wicked....Nice Find...

MrEous

iTrader: (11)

One key to getting rid of drone is to get any kind of muffler that isn't a 'straight through' design.

CMax03

iTrader: (3)

That Oem muffler is good up to 247 whp IIRC......My 1/4 mile 60 ft times have always been awesome with the OEM muffler, it appeared to outflow the capabilities of an INJEN Intake I once ran.....I laid down repeated 2.1 sec/60ft with an 4AT and 18" wheels....

luvlexus101

iTrader: (6)

I've heard these varex mufflers are good but idk personally.

http://www.youtube.com/watch?v=K7jGYnhbQQU

MrEous

iTrader: (11)

Sorry not sure what that had to do with what I said...but the OEM is an example of what I was saying to get.

T_Behr904

That actually looks interesting. Porsche's for a while now have used something very similar with their optional sport exhaust systems, mostly found on the 911's.

gatsugansu

iTrader: (3)

that's why only one of my tip spews steam when warming up in the morning. I've always wondered if one was clogged.

T_Behr904

Mystery solved

ranmas2004

iTrader: (2)

Wonder what the inside of the cattman muffler looks like.....

TunerMaxima3000

iTrader: (4)

OP: The G35 Sedan muffler will mount with very little modification, it's stainless, has the Variable Valve, and is 2.5"

It also has some nice looking dual polished tips.

I have one in my basement but shipping would negate it for you I think.

cjandura

iTrader: (3)

Thanks Tuner is it a OE infinity muffler or a aftermarket?i might just get one for the interm until i can piece together the parts and time to build my own.

TunerMaxima3000

iTrader: (4)

OEM.

Only downside is they're heavy as *****.

I also have a Cattman 2.5" Axel back sitting in my basement doing nothing.

T_Behr904

How much heavier is the G sedan muffler compared to the factory Maxima muffler?

TunerMaxima3000

iTrader: (4)

I don't know how heavy the Maxima muffler is, but that G sedan muffler amazed me, I wouldn't be surprised if it's 50 lbs.

T_Behr904

Jeez... that's a big hunk of metal

TunerMaxima3000

iTrader: (4)

Yessir. I can't imagine that it's heavier than the Maxima muffler though.... if it is I'm sure it's not by much. Probably very close to the same muffler, the dimensions are quite close I think if not the same for the body.

Rods03Max619

iTrader: (5)

I'll get the weight of one sometime this week when I swap out stock for my Cattman...I don't think it is 50lbs though, I know stock Headers, precats and y pipe and main cat weighed a total of about 55lbs give or take a pound vs Cattman Headers which on box says when shipped 30 lbs.....and Fastcat don't know the weight say 5lbs ....

TunerMaxima3000

iTrader: (4)

Sick weigh one, I have one loose so I can weigh it too once I get a comparative number!

luvlexus101

iTrader: (6)

Come on Matt hack open that g muffler and give us all some pics

Rods03Max619

iTrader: (5)

Yeah should have it by Saturday, rained today in Cali so I should have it on by sometime this week....Need More Power....

TunerMaxima3000

iTrader: (4)

Actually, that's the whole reason I have the muffler, I was supposed to do that for the G35driver guys.... I've been so swamped with work, switching jobs, christmas, etc, and now the new car that I haven't had time to do it! And now I don't work where there's a welder anymore so I can't weld it back together after hacking it apart.

TunerMaxima3000

iTrader: (4)

I'm assuming this guy has to post a thread on something he likely didn't research. I await his thread.......

cjandura

iTrader: (3)

Tuner if you have a harborfreight around you they have them on sale less then $200.not the best quality like a esb but it will get you thru the small projects.

TunerMaxima3000

iTrader: (4)

Thanks for the HU, but none around here. If/when I get one I'll get a good one. All awaiting a new house with a garage, no where to use it really now anyways. It's too cold to weld outside and I obviously can't do it inside my house LOL

Rods03Max619

iTrader: (5)

A TunerMax I got 25.5lbs for a stock muffler, my Cattman said about 24...just threw them in a basket and put on a normal scale but I always put the 25lb dumbells to make sure its on the money...What did you get....

cjandura

iTrader: (3)

Ok so i have been researching a few options on this custom muffler build and need some input.so from a review i have 2 options on the case design.first is a single outer shell with internal baffling materal or a inner and outter shell with sound damping between the shells with inner baffle materal.so many damn choices after talking with the supplier but he did explain that the number of internal chambers and pass thu pipes determins output sound.

TunerMaxima3000

iTrader: (4)

Hmmm sounds like the G muffler weighs more, suprising. I'll have to get back to you my man I'll weigh them tonight!

TunerMaxima3000

iTrader: (4)

Wow I was really shocked, but the G muffler only weighs 22.5 lbs

Seemed much heavier..... guess that just shows how much I suck at judging weight!

Rods03Max619

iTrader: (5)

Damn that's pretty nice, when I grab them they don't really feel heavy at all....

TunerMaxima3000

iTrader: (4)

^ Which way to the gym Rod?