Exhaust.....any ideas?

[Florida240sx]

Last part of my turbo project is needed.Need an exhaust for my car.I'm in Florida so no emissions. My friend's dad can get me some 3'' stainless steel pipe and he can weld.Also got a pipe bender.Only thing I'll need is a flange to mate up to the downpipe and should I jus tmake it straight all the way back or put tip or something on it?It'll be loud i know.Maybe just go straight all the way back with 2.5?No ideas about the exhaust world.Trying to save cash, want a BRM but too pricey right now.

[nismofly]

i got my 2.5 BRM before my turbo, i wanted exhaust first so i was ready and 2.5 will be fine for the power i want to make

[Florida240sx]

Thinking if I come off the downpipe with 3'' and then maybe make it split in to 2 and out the side in front of my tire...Like the ford lightning truck...Just running some ideas.Maybe just buy el cheapo exhaust?I like dual tips wish I could keep stock muffler...Any way to modify it to suit my needs?

[Craving4Boost]

you can always go with a CUT-OUT and keep your stock exhaust

[Florida240sx]

???Want run 3'' straight to my stock exhaust and weld it?

[Arrow]

I think that he meant about gutting the muffler and running the 3" into it... but I could have missinterpreted his post... I'm not too sure what a cut-out is either... you could always try to locate a muffler similar to BRM's dual tip... looks very stock while allowing for added performance and better flow...

[Craving4Boost]

a Y-cutout is what im talking about. either electronic activated or boost actiavted...it will open a different port. this is what i will be getting when the time comes for it

http://atpturbo.com/root/relea...4.htm

[Craving4Boost]

sorry if posting that link is agasint forum rules or anything...i wasnt sure if i should have or not..

moderators you can delete it if u want

[Florida240sx]

As far as I know it isn't because you are helping.It's anew idea I like it but for that price mine as well get exhaust..Turboing next week and still in need of exhaust.I can get 3'' pipe anyway to weld it to my stock muffler and be decent for boost or need a new system?

[somthin240]

I've found for most custom setups and swaps where custom pipe is needed. just run your own, which you say your doing. then just pick up a magnaflow muffler for around $160 many styles to choose. weld a flange and that's it. but it's also cool to think of other ideas like the side exhaust and others too.

[Craving4Boost]

the muffler is where the exhaust gas wants to expand the most since it is exiting...you need a bigger muffler than stock to get the most peformance out of your exhaust

[Florida240sx]

So 3'' pipe to a 55gallon drum then exit right? Yea but was looking at just for now, being I might keep it at 7lbs so I can get my vert show worthy.So was wondering about running 3'' from DP to stock muffler just weld the pipe to the stock muffler.Or will this create boost creep? IAP kit 2.5"dp into 3".So was thinking about running 3" straight to the stock muffler.Cut the hole a little bit bigger and weld.I'd reall like to have the 3" drop down into (2) 2" and then come out the side in front of my wheel but will this be in efficient for turbo system?No Emissions

[Craving4Boost]

is this temporary? what will you be doing in the future? i guess what your doing is fine

[Florida240sx]

Messing with the vert this weekedn and see if I can get her to stop smoking.If so she gets the boost.hen I'll just get probably brm.Too many decisions/ideas on my mind at the moment.So a 3" pipe straight form my downpipe to stock muffller, where I cut an reweld would be fine?Or be not enough...Second idea was to just do a straight pipe the splits to 2 2" pipes either in front of tire or stock location.Would this idea work? (I like this idea best)

[DRIFTEADOR]

cut outs can be had for much cheaper. check out this link,http://www.mccordcg.com/mpp/order.htm

best of both worlds, imo. quiet for the girl/in laws/neighbors/cops/your dog/whatever and full performance when needed. plus 4" side exit is just plain sexy

[Florida240sx]

Wouldn't that be the same as my idea of just running a straight 3'' pipe?With no muffler just mine will be loud at all times and that goes by amount of pressure?Also read abotu people just running open downpipes whats the negative effect?

[Craving4Boost]

same performance yes but i rather have the sleeper sound

open downpipe is illegal and very very loud do not even try it

[fiznat]

Florida I think you are thinking of open wastegate dumps, not actual open downpipes. An open downpipe is just silly, I cant imagine that even for a track-only car. An open wastegate dump is loud as well (my wg is this way), but only when the wastegate is open (when you are at full boost). Usually at that point you're breaking a few other laws as well so whats one more, right? haha

As far as making your exhaust, ideally you should have the whole system at a constant diameter (like 3" from the turbo all the way back). You can find mufflers only at any size you want at a lot of places... I bet Greg would be willing to work something out with you for a B+M muffler-only if you wanted to weld that on the end of your piping. Keep the diamater uniform though, and dont get crazy with the complexity. Also you should think about cutting the pipe and welding in flanges for a test pipe/cat replacement in case you ever need to emissions test and need to swap a cat in there.

It shouldnt be too hard though, good luck doing it and get us some pics!

[DRIFTEADOR]

Also read abotu people just running open downpipes whats the negative effect?

the air entering through the open pipe cools hot parts down too quickly leading to possible warpage....and the loudness which should be enough to keep you away from it. you can try it while not turbo'd yet. it'll sound the same minus the bird whistle spooling sound.

[Florida240sx]

Hmm I need 2 flanges.Wonder if my buddy can get it.Than for yalls input.We got a how-to-change clutch sticky in here? Because I got a new clutch last year heavy duty stock clutch...thik it was rated for like 200. Anywayz it sucked since the day I got it and it slips a little now...another $$$ for my project.

[PapaSmurf2k3]

Usually at that point you're breaking a few other laws as well so whats one more, right? haha

sooo true haha.

I vote sidepipe, but im a little bias (I have a sidepipe right through my rocker panel) FYI, I only suggest routing exhaust through the driver's side, there are fuel lines or brake lines or something on the other side. Im heading over to the garage today to see if i can get anything done on the 240, ill try and take some pictures for you.

[Florida240sx]

Yea are fuel ines are on the right...Well at least if it breaks you can say it a flame kit. I was thinking 2 pipes coming on in front of drivers rear wheel.Pretty much same as the ford lightning.

[PapaSmurf2k3]

are you going to run them under your rocker panel or through it? it gets pretty tricky because there isnt a lot of room under there, especially if the car is lowered. You also have to make sure that you set up a really good support system, otherwise it will rattle against all sorts of stuff. My exhaust isnt currently hooked up, (in the middle of turboing), but ill take some pics of the rocker panel anyway.

[koenig]

If i was making my own exhaust system i would make duel exhaust. I think duel exhaust is awesome but it would get fairly expensive with two mufflers. But hey its only money!!! lol

[PapaSmurf2k3]

You dont need 2 mufflers to run dual pipes, you could run a Y-pipe style muffler, 1 in, 2 out. Flowmaster and Borla make all sorts of muffler configurations. Im planning on getting a Borla 3"in 2.5"out in the near future. Here are the pics I promised (if I can get the pictures to load right)



the rust was so bad it came through to my wheelwell.







all these pics can be found on my member's ride page. This is all rough bodywork. I just re-worked the whole rocker panel and am planning on paint and some rough bodywork soon. Let me know what you think.

PS my car was really dirty when I took these pics... it hasnt been washed in about 6 months.
Modified by PapaSmurf2k3 at 11:32 PM 6/28/2005

[Florida240sx]

That's what I'm wanting except 2 pipes.

[PapaSmurf2k3]

that would be extremely hard to do. If you look under your car, there is a small lip where the unibody frame rail ends and goes up to the floor, in front of the rear suspension/controll arm junk. Its really only big enough to fit 1 pipe through, I dont even think you can fit 3" through it. about the only thing you could do would be to fabricate some sort of 2-pipe tip, and then make it run into the 1 pipe, but even that would be pretty tough.

[Florida240sx]

Will take a look tomorrow and see if I can think of something...