I need to make an exhaust...

[92civicb18b1]

For the Audi...

Since it's a V6 it has dual pipes most of the way back, probably about 1.75". What do ya'll think?

Like this kinda, don't mind my crappy paint diagram ->

Keep it dual pipe until a mid positioned resonator then 3" back?

Or keep it dual pipe all the way back with two resonators, 1 muffler?


I have to actually look into it a little more, but I'm thinking my second choice is the best. The cats are going to be removed.

 

[Battle Pope]

That's kinda like how my Q45 was. It was dual exhaust all the way back to the muffler.

For your situation I think your second diagram would probably work best.

 

[92civicb18b1]

I need to go look under it again. I hope there aren't too many bends so I can make it cheap as shit.

 

[Seany-izzle]

2.5 is pretty big for only 3 cylinders...

 

[92civicb18b1]

Yea you're right, 2-2.25" would probably be better.

 

[hosmer]

are you eliminating the cats?

 

[92civicb18b1]

yep...

It's in PA so no emissions for me...

 

[formby]

 

[jimboburgess]

I agree, resonator then muffler, two inch pipe should work up to the resonator. and if you are planning on running the exhaust down the center that is cool too.

 

[swanny]

It looks like it has a few minor bends.

 

[92civicb18b1]

that's for a 30V....I have a 12V and it won't fit.

But yea, that lookms simple and cheap to make.

 

[Battle Pope]

12 valves on a V6? Gatdamn. Talk about a head flow problem...

 

[reikoshea]

30v on v6 seems stranger...how does 5v per cyl work?

 

[Battle Pope]

Seems to work well with the 20v 4age silvertop

of course it comes stock with ITBs and a tuned header.

I would imagine it would be 3 smaller intake valves and 2 larger exhaust valves.

 

[92civicb18b1]

Yes, its the LS of the V6 Audis.

I believe it has 3 Intake and 2 Exhuast and I think it may be quad cammed.

I can't find a picture right now.

 

[reikoshea]

thats crazy yo.

 

[92civicb18b1]

yep.

The 12V is perfect for reliablitly and with mine turning 178k in sound condition. I can't complain. Although 172 hp isn't really cuttin it anymore.

And since I have a 96, there is no aftermarket support and the hitachi ECU is "untuneable", standalone would be the only option. The 30V gets a SC kit, which brings it up to 300AWhp/300AWtq. But at 5k, I dunno if it's worth it, the 30V's have 190 crank hp so its about a 125-130 hp increase.

 

[NissanNiNjA2nd]

Quoted post[/post]]
12 valves on a V6? Gatdamn. Talk about a head flow problem...

uh... how many valves per cyl does your 460 have?

almost all older motors were 2 valve per cyl... and quite a few still are

I think the best way, personally is 3 per cyl... and I like high revving light cars so 2 intake and 1 exhaust is best... with the sparkplug going straight into the cylinder

 

[92civicb18b1]

yea...but it's an Audi. That's slightly dissappointing. Although it does make decent power for a 12V V6...172 hp

 

[jeffie7]

Why are you replacing the exhaust? If I remember right my old 96 A4 exhaust was full SS.