Bates Prototype Valvetronic Exhaust - Custom OEM Exhaust with Valves

Subw00er · 04-20-2009, 02:56 PM

Has anyone seen the inside of a oem exhaust before? I'm curious about the packing/tubing within. I'm considering a special exhaust project.
[BIG EDIT: See below (starts at post #19) for pics of a work in progress of our custom valve-based exhaust, now named the "Samuel E Bates Valvetronic Exhaust".]

All of the photos from this mod can be found here: http://www.flickr.com/photos/4023679...7623776183941/

[Long term update] For anyone considering buying Race Ready Cutouts / Valves, you should read this first:
http://www.m3post.com/forums/showthr...40#post9589740

[Longer term update] JEGS valves have been great. Havent missed a beat in many months.

McLuVan · 04-20-2009, 03:13 PM

I would LOVVVEEEEEEEE to see this as well

McLuVan · 04-20-2009, 08:00 PM

not yet?

Subw00er · 04-20-2009, 09:15 PM

Ya, I'm trying to mod mine to be louder - with valves, so I need to see whats inside so I know where to cut.

gemini330zhp · 04-20-2009, 11:34 PM

http://www.dinancars.com/assets/File...st%20FINAL.pdf

Subw00er · 04-20-2009, 11:57 PM

You are the man. thank you! I hope this PDF is accurate!

M2381 · 04-21-2009, 09:48 PM

Quote:

Originally Posted by gemini330zhp

http://www.dinancars.com/assets/File...st%20FINAL.pdf

-1 on fake dinan exhaust tips

Subw00er · 04-21-2009, 10:10 PM

Ya, it looks like the spot I'll do it is right after the Helmholtz chamber and before the 90deg bend going to the absorption chambers. I'll just have them pipe out the sides.. I have to look under the car to see if there is room there, but that would be the IDEAL place to dump. It likely will be much quieter than where others are dumping - pre muffler, but I want to retain some back pressure and the beneficial Helmholtz chamber effect. I'm just going for more sound here, not HP.

I bought a spare exhaust today..now there's no going back!

Man, I really wish I could find a real cut-away view. If anyone has a cut exhaust they are just going to throw out, why not butcher it for us!

McLuVan · 04-21-2009, 10:43 PM

hey buddy
can you please take pics for me when it's cut?

Subw00er · 04-21-2009, 10:44 PM

ya def

gr8000 · 04-22-2009, 04:41 AM

Quote:

Originally Posted by M2381

-1 on fake dinan exhaust tips

Same here.

The fakes will look different vs the real onces over time, won't they? The real ones will be smoked and the fakes ones will look brand new!

quackman · 04-23-2009, 07:03 PM

Quote:

Originally Posted by gr8000

Same here.

The fakes will look different vs the real onces over time, won't they? The real ones will be smoked and the fakes ones will look brand new!

That's probably why they have coated them black, haha.

And I bet if you tried looking in the fake tips you'd see a wall instead of.... empty piping.

McLuVan · 04-25-2009, 07:04 PM

soooooooooooooooo
pics?

FifthStreetz · 04-25-2009, 07:34 PM

Quote:

Originally Posted by M2381

-1 on fake dinan exhaust tips

fake tips FTL.

Ca$hOnly · 04-25-2009, 08:53 PM

Why would anyone buy an exhaust with fake tips? Terrible idea on their part.

McLuVan · 04-26-2009, 02:42 AM

subwooer?

Subw00er · 04-26-2009, 02:04 PM

I'm waiting for the exhaust to arrive from a forum member. It will be acouple weeks before pics at least.

McLuVan · 04-26-2009, 02:04 PM

Quote:

Originally Posted by Subw00er

I'm waiting for the exhaust to arrive from a forum member. It will be acouple weeks before pics at least.

Subw00er · 04-26-2009, 02:35 PM

BTW, this is my plan.. (Graphic images courtesy of Dinan! http://www.dinancars.com/assets/File...st%20FINAL.pdf)

ORIGNAL:

MODIFIED with VALVE added (I photoshopped this to add the valves):

Is anyone versed in exhaust technology??!?! I am hoping this prevents drone by being after the Helmholtz chambers, but adds noise by being before the absorption chambers. I'll likely add turn down tubes after the valves. I hope there is enough room under there..

rzm3 · 04-26-2009, 02:43 PM

Quote:

Originally Posted by Subw00er

Is anyone versed in exhaust technology??!?! I am hoping this prevents drone by being after the Helmholtz chambers, but adds noise by being before the absorption chambers. I'll likely add turn down tubes after the valves. I hope there is enough room under there..

nope there isn't space on the two sides...

Subw00er · 04-26-2009, 03:54 PM

I really should go look!

I may have to come out the back side..or at the corners. I could also dump straight down, although thats not ideal.

GT3 Tim · 04-27-2009, 09:22 AM

Quote:

Originally Posted by M2381

-1 on fake dinan exhaust tips

+10,000. lol

At least they are telling people this time! lol

04-20-2009, 02:56 PM	#1
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	Bates Prototype Valvetronic Exhaust - Custom OEM Exhaust with Valves Has anyone seen the inside of a oem exhaust before? I'm curious about the packing/tubing within. I'm considering a special exhaust project. [BIG EDIT: See below (starts at post #19) for pics of a work in progress of our custom valve-based exhaust, now named the "Samuel E Bates Valvetronic Exhaust".] All of the photos from this mod can be found here: http://www.flickr.com/photos/4023679...7623776183941/ [Long term update] For anyone considering buying Race Ready Cutouts / Valves, you should read this first: http://www.m3post.com/forums/showthr...40#post9589740 [Longer term update] JEGS valves have been great. Havent missed a beat in many months. Last edited by Subw00er; 07-29-2011 at 08:06 PM.
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04-20-2009, 03:13 PM	#2
McLuVan Lieutenant General Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ Posts: 13,121 iTrader: (1)	I would LOVVVEEEEEEEE to see this as well __________________

04-20-2009, 08:00 PM	#3
McLuVan Lieutenant General Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ Posts: 13,121 iTrader: (1)	not yet? __________________

04-20-2009, 11:34 PM	#5
gemini330zhp Major Drives: 2008 M3 E90 Join Date: Jul 2005 Location: BergenCo NewJersey Posts: 1,181 iTrader: (0)	http://www.dinancars.com/assets/File...st%20FINAL.pdf __________________ 2008 Jet Black E90 M3 6SPD no sunroof and 18s to my specs

04-21-2009, 10:43 PM	#9
McLuVan Lieutenant General Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ Posts: 13,121 iTrader: (1)	hey buddy can you please take pics for me when it's cut? __________________

04-20-2009, 09:15 PM	#4
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	Ya, I'm trying to mod mine to be louder - with valves, so I need to see whats inside so I know where to cut.

04-20-2009, 11:57 PM	#6
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	You are the man. thank you! I hope this PDF is accurate!

04-21-2009, 10:10 PM	#8
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	Ya, it looks like the spot I'll do it is right after the Helmholtz chamber and before the 90deg bend going to the absorption chambers. I'll just have them pipe out the sides.. I have to look under the car to see if there is room there, but that would be the IDEAL place to dump. It likely will be much quieter than where others are dumping - pre muffler, but I want to retain some back pressure and the beneficial Helmholtz chamber effect. I'm just going for more sound here, not HP. I bought a spare exhaust today..now there's no going back! Man, I really wish I could find a real cut-away view. If anyone has a cut exhaust they are just going to throw out, why not butcher it for us!

04-21-2009, 10:44 PM	#10
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	ya def

04-25-2009, 07:04 PM	#13
McLuVan Lieutenant General Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ Posts: 13,121 iTrader: (1)	soooooooooooooooo pics? __________________

04-25-2009, 08:53 PM	#15
Ca$hOnly Major Drives: E92 M3 Join Date: Apr 2009 Location: In ur fridge, eatin ur foodz Posts: 1,063 iTrader: (5)	Why would anyone buy an exhaust with fake tips? Terrible idea on their part. __________________

04-26-2009, 02:42 AM	#16
McLuVan Lieutenant General Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ Posts: 13,121 iTrader: (1)	subwooer? __________________

04-26-2009, 02:04 PM	#17
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	I'm waiting for the exhaust to arrive from a forum member. It will be acouple weeks before pics at least.

04-26-2009, 02:35 PM	#19
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	BTW, this is my plan.. (Graphic images courtesy of Dinan! http://www.dinancars.com/assets/File...st%20FINAL.pdf) ORIGNAL: MODIFIED with VALVE added (I photoshopped this to add the valves): Is anyone versed in exhaust technology??!?! I am hoping this prevents drone by being after the Helmholtz chambers, but adds noise by being before the absorption chambers. I'll likely add turn down tubes after the valves. I hope there is enough room under there.. Last edited by Subw00er; 11-13-2010 at 10:45 AM.

04-26-2009, 03:54 PM	#21
Subw00er Bates '08 Interlagos Launch Drives: 08e92M, 03e46M Join Date: Nov 2005 Location: NY Posts: 1,198 iTrader: (2)	I really should go look! I may have to come out the back side..or at the corners. I could also dump straight down, although thats not ideal.

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