Muffler suggestions

[branham76]

Looking for a performance muffler from flow master for a 1973 240z. Im looking for a throaty deeper sound and added power any suggestions? However I do not want to sound like a cheap ricer either. Please put forth your ideas!

[Diseazd]

I like Borla mufflers..........not too loud, but a nice throaty sound.

[fixitman]

I like Borla mufflers..........not too loud, but a nice throaty sound.

I have a 2 1/2" Borla exhaust system for sale in the classifieds. I'll give you a good deal on the muffler and any of the other stainless steel parts.

Fixitman

[MotoManMike]

I've been really happy with the magnaflow's i've used on this last exahaust i've got. Its 2 1/2 inch all the way back with headers and a straight through magnaflow, it sounds fantastic. They come in chrome too.

[LeonV]

I don't associate Flowmaster with performance. Borla is nice, their XR-1 is a great performance muffler.

[siteunseen]

Magnaflow and Flowmaster are the same?

[surfer.tech]

Fujitsubo Legalis-R on mine. The sound is amazing.

[bpilati]

I have a 2 1/2" Borla exhaust system for sale in the classifieds. I'll give you a good deal on the muffler and any of the other stainless steel parts.

Fixitman

Why aren't you using it?

[bpilati]

Fujitsubo Legalis-R on mine. The sound is amazing.

Where did you get it?

[fixitman]

Why aren't you using it?

With my carb setup, I decided to use a 2 1/4" dia. custom-made Borla system. The 2 1/2" dia. muffler is identical in size to the 2 1/4". It fits well. You can see a few photos in the Members Gallery under Fixitman. A $100.00 for a muffler and tailpipe that will last over 10-15 years is a terrific deal. You just need to have the tailpipe welded on or one end flared.

If you are interested in a full S.S. system, I can put you in touch with MSA's supplier to have the pipes bent.

Fixitman


If you would like a quieter exhaust system, you could even add a Borla resonator.

[branham76]

Im going for a deeper sound yet not ricey thanks for the advice ill keep checking and looking into things

[surfer.tech]

Where did you get it?

Custom order from Fujitsubo Japan. There's 3 of us on here with the same exhaust, but we all run different headers.

[branham76]

I want to keep the original headers for now (money wise) and just get the best exhaust i can find

[bpilati]

With my carb setup, I decided to use a 2 1/4" dia. custom-made Borla system. The 2 1/2" dia. muffler is identical in size to the 2 1/4". It fits well. You can see a few photos in the Members Gallery under Fixitman. A $100.00 for a muffler and tailpipe that will last over 10-15 years is a terrific deal. You just need to have the tailpipe welded on or one end flared.

If you are interested in a full S.S. system, I can put you in touch with MSA's supplier to have the pipes bent.

Fixitman


If you would like a quieter exhaust system, you could even add a Borla resonator.

I'm going to for 2-1/4" too, I hear it's gives you better mid-range power. 2-1/2" is good for racing and lots of high revs. That's what I hear.

[bpilati]

Custom order from Fujitsubo Japan. There's 3 of us on here with the same exhaust, but we all run different headers.

For now I'm staying with the original manifold, which actually has been given a pretty good rating for a casted exhaust manifold.

[LeonV]

I'm going to for 2-1/4" too, I hear it's gives you better mid-range power. 2-1/2" is good for racing and lots of high revs. That's what I hear.

Nope, not true. IF the 2.25" is limiting you, the 2.5" will be better in ALL aspects. If the 2.25" is not limiting you, and it probably wouldn't on a stock-ish L24, then a 2.5" will not hurt nor help. It'll just take away some ground clearance.

[ksbeta]

Custom order from Fujitsubo Japan. There's 3 of us on here with the same exhaust, but we all run different headers.

I'd be very interested to hear what this sounds like.

I've never been able to determine what header/exhaust/muffler combination is on my '70, but I love the sound:

http://www.youtube.com/watch?v=mTlVK7zbbxw

[bpilati]

Nope, not true. IF the 2.25" is limiting you, the 2.5" will be better in ALL aspects. If the 2.25" is not limiting you, and it probably wouldn't on a stock-ish L24, then a 2.5" will not hurt nor help. It'll just take away some ground clearance.

It's the old back pressure argument. The engineer in me says the less restriction the better. More mass flow, less friction losses from turbulence is better. But some says you need back pressure; these discussions go back decades.

[LeonV]

It's the old back pressure argument. The engineer in me says the less restriction the better. More mass flow, less friction losses from turbulence is better. But some says you need back pressure; these discussions go back decades.

This has been discussed countless times. Those that wish to perpetuate the myth are ignorant of the facts. Discussions about the Earth being flat went on for quite a while, doesn't mean they were anywhere close to being right.

Hopefully, this thread can properly inform the "you-need-backpressure" crowd.

[sparegolfer]

What about 2 inch exhaust all the way back?

[LeonV]

What about 2 inch exhaust all the way back?

Too restrictive for best performance. However, if you don't care, then go for it.

My stock-cammed L24 has dual 2" pipes.

[bpilati]

This has been discussed countless times. Those that wish to perpetuate the myth are ignorant of the facts. Discussions about the Earth being flat went on for quite a while, doesn't mean they were anywhere close to being right.

Hopefully, this thread can properly inform the "you-need-backpressure" crowd.

Thanks Leon, good stuff. When we were designing systems for fluid flow in college, no one ever suggested we increase friction or reduce flow rate to improve efficiency. That's why I've always been baffled by the talk of backpressure.

[LeonV]

When we were designing systems for fluid flow in college, no one ever suggested we increase friction or reduce flow rate to improve efficiency.

Precisely!

[Captain Obvious]

You don't want back pressure. You want momentum.

Problem is that sometimes an increase in momentum is accompanied by an increase in back pressure.

I'm no expert in the field, but my theory is that since an increase in momentum is often accompanied by an increase in back pressure, people started thinking that back pressure was the desired effect, and it's not. It's the unwanted, but often necessary, side effect.

[Hunter260Z]

I'm currently running a Monza exhaust system from the 80's. So what's the best muffler or exhaust going today. I know this thread is old, but things change in 2 years. Looking for ideas. I've heard bad reviews on the Motorsport Auto turbo exhaust system.

[siteunseen]

I've got the Premium Exhaust from MSA, Motorsport! MSA Premium Exhaust System, 9/74-78 260Z-280Z (for 6-1 Headers) - The Z Store! Nissan-Datsun 240Z-260Z-280Z-280ZX-300ZX(Z31/Z32)-350Z-370Z Parts to match their 6 to 1 ceramic coated header and absolutely love it. Some people complain about the droning at constant highway speeds and this seems to be solution, http://www.summitracing.com/parts/WLK-24215/. I drive my Camry on the highway so the droning doesn't bother me when I'm ripping around here in my Z. It bothers other people though, it's pretty loud when you're on it, but it only bothers them for a second or two.

[Mike W]

Like siteunseen, I have also used the MSA premium exhaust system with their coated headers. Fit and finish was excellent and the install was very straightforward.

About the only thing I was not 100% with was the included DynoMax muffler. I had issues for a couple of reasons. First, the sound was not exactly what I was looking for and second, it was a very tight fit getting it up in the cavity in the rear and as a result I would experience the muffler vibrating against the body frame at times, especially when it was cold. I installed this on a late manufacture 260Z with the early 280Z bumpers and this configuration leaves less room in that cavity than the 240 or early 260.

I ended up replacing it with a MagnaFlow polished muffler that was slightly smaller than the DynoMax, so the fit was better and it virtually eliminated any vibrations that I had before. I also like the sound of this better as well. It is throatier and sounds great as you go through the gears. I have even had people comment that they thought I had a V8 under the hood.

Mike.

[ajmcforester]

The bigger the diameter lower the sound. I like the pitch of a super-sprint exhaust it sounds a lot like the 50's/early 60's Ferrari. If you want a lower register sound go with a larger diameter resonator. If money is no object go with the Fujitsubo system the build is first class, but you can build something that sounds and functions the same for 1/4 of the cost, especial if you do not care that you have ceramic coated stainless steel. Now their was a company that makes a resonator that looks the same as the supersprints inside and out. Which I'll spend the looking for it if someone is interested, I'll even measure my full sysem and give you the meshurements to copy the original setup.

[Fred Sigarto]

Borla for me too, Nissan Comp. headers down to 2 2-1/2" to the Borla

[madkaw]

Magna flow turbo . Go as big as you can fit. I'd run a second resonator and run all 2.5 or 3" pipe

[idoxlr8]

Used the MSA six into one as well.

Didn't fit well for my application, ended up at my local muffler place to have it tweaked into shape. Also installed a flow through bottle resonator that eliminated the droning......highly recommended.

Still howls when you get on it but won't annoy the world when you are cruising around.

Dean

[Hunter260Z]

idoxlt8

This is exactly what I have heard about the MSA system. I also heard if you were running R-200 then you would need to bend the tailpipe to make it fit. Also add more hangers

[ntownsen]

Just received my MSA Exhaust last week and was looking forward to the final mechanical repair to our car ... sadly it doesn't fit. As mentioned above, it looks like MSA exhausts may have some alignment issues. I'm running a stock manifold on a stock Z and expected a everything to fit without issues. The price is attractive but having to have it tweaked may negate any price savings. Can't address the sound of the exhaust yet since its not installed yet.

[gacksen]

had a single magnflow rear box with 3" pipe in the car. made 118db at 3750rpm. put in a second big one on the long straight pipe and volume went down to 109db at same rpm.
sound is good but would prefer a more high pitch tone.

[HuD 91gt]

I have a 2 1/2" Borla exhaust system for sale in the classifieds. I'll give you a good deal on the muffler and any of the other stainless steel parts.

Fixitman

I don't see this in the classifieds?


EDIT: Just realized this was 2 years old.