Twin 3 Inch Exhaust !? Anyone Done It?

[topher_]

I did a twin 2.5 inch on a rb26 in a 31

No mufflers

Sounded like a v-twin Harley f**king light plane on takeoff

Put mufflers on it or it will sound shit( ones that mix the exhaust)

Hmmm with my one the only things i will have to shut it up will be a hotdog (where the cat is meant to be ) a mid and rear muffler. Reckon it will sound ok?

[fatz]

Nope

[jet_r31]

Keen for group buy Big boy !

yep id be interested in a muffler aswell if its small enough still to fit under the car

cheers

darren

[topher_]

Nope

Atleast nobody will suspect me coming home from gay clubs wearing leather chaps. People will think i'm on a harley

[japtaxi]

yeah i recall will (japtaxi) running them something similar on his car back in the day! i dont know if he is still around....

i think i have pics somewhere and will check for you on weekend sometime

Sorry late reply but yeah I'm still around.. sort of

If my memory serves me correct, it was twin 3" dumps to twin 3" pipes, twin catalytic converters, no resonators, merge into single 4" boring factory looking muffler. It was done this way for factory/stealth look.

lol'd old workshop receipt said "exhaust system $3100" ... definitely not worth it.

[Joshbigt62r]

I'm keen on 4" exhaust group buy.

[Risking]

If there is enough interest I'd be prepared to put together a 4 inch system group buy.

Only interested in doing them with high quality material and mufflers etc.

[gtr jet]

What would a rough price on the 4" be if we could get enough interest?

[Piggaz]

What about a titanium option?

[wedge_r34gtr]

What about a titanium option?

Id be interested in a 4" mandrel bent catbback.

[Risking]

I've got a quieter day on tomorrow so ill price up 4 inch systems with mufflers.

I can do 4in Ti but it isn't cheap obviously.

[Piggaz]

I've got a quieter day on tomorrow so ill price up 4 inch systems with mufflers.

I can do 4in Ti but it isn't cheap obviously.

Rough estimate?

[Risking]

A rough estimate using Ti 6Al-4V (most popular and corrosion resisatant alloyed Ti) would be between $3200 and $3500 for a 4in with a fabricated Ti muffler.

[Deano 1]

That's not too bad, I've got a tomei Ti it was alot cheaper, but it's stupid loud.

What kind of prices would we be looking at if we went staino?

[Risking]

Ill work out a couple of options today and post them up. If people want it ill start a group buy thread and link it here.

Id rather stick the group buy to one option as when I buy material and parts Ive got far more buying power doing them all in one material than I would having to buy less of each material.

Stainless is affordable, most of the cars we do are circuit racers than destroy exhausts in a year or two and mild steel is cheaper to replace so its the most used material.

Thin wall mild is fairly light as well.

[Frosty]

could be interested depending on the design and what you decide to put together......

[Frosty]

Sorry late reply but yeah I'm still around.. sort of

If my memory serves me correct, it was twin 3" dumps to twin 3" pipes, twin catalytic converters, no resonators, merge into single 4" boring factory looking muffler. It was done this way for factory/stealth look.

lol'd old workshop receipt said "exhaust system $3100" ... definitely not worth it.

man that was so long ago......what 2004 when i was building my 26 gts and u were doing the same??

[bigmikespec]

Ill work out a couple of options today and post them up. If people want it ill start a group buy thread and link it here.

Id rather stick the group buy to one option as when I buy material and parts Ive got far more buying power doing them all in one material than I would having to buy less of each material.

Stainless is affordable, most of the cars we do are circuit racers than destroy exhausts in a year or two and mild steel is cheaper to replace so its the most used material.

Thin wall mild is fairly light as well.

Where are you getting thin wall mild steel tube from Brad... the larger sizes (4" and up) are 1.6mm thick wall which is standard.

[Risking]

Design will be as straight as possible with a resonator mid way and a rear muffler.

Mike I have a wholesaler who can get 3.5 & 4in in a 1mm wall. It's a day or two lead time to have it.

[Risking]

What do you guys think a 4 inch system in mild steel would be worth?

Cat back (decat built in if needed)

Cannon rear muffler

Resonator in the center

Proper bolted rubber mounts

Flanged rear section

It will be no means be a quiet exhaust system.