Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
Unique sound / Custom 930 muffler

I'm always looking for the perfect exhaust note from my 930. I have dreamed up a muffler system, let me know if it's been done. Your thoughts are welcome

I'm not sure what this will accomplish as far as sound. I figure there will be a muffler on each pipe or possibly just on the shorter one. Then maybe I'm just tired and need to close paintshop

Old 07-17-2011, 05:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,527
Garage
What is the sound you are looking for? I've tried a bunch of different designs.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 07-17-2011, 08:16 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
Brian, Just something more exotic. I do like the deep rumble of the magnaflow but i want something raspier (sp?)
Old 07-18-2011, 05:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Oct 2006
Location: Chas, SC
Posts: 1,006
are you thinking raspy as in the sound when accelerating with the old Factory Twin pipe sport mufflers?
__________________
Tim
1986 930
Gone:71,2,4 914's, 70T, 71T(RS),77S
Old 07-18-2011, 06:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Apr 2009
Location: Cedar Park,TX
Posts: 2,617
Garage
What about chambered mufflers like on the old mid year vettes. Allan's pipes has some that I was looking at. They can be made in many lengths and materials. Not the quality SS that Brian does, but none the less maybe something worth looking at. You may have to go to single outlet though. It would be tight to split it off.
__________________
John- I blame and thank the longhood boys of Austin
-84 911 Carrera w/ 930 t/p,efi'd,dizzy free,HFS turbo, 78 930 RoW no option sunroof coupe, 64 Corvette roadster, 71 911T, 73 911E, 67 Bronco survivor. 71 FJ40, 95 M3 (for sale)
"Illegitimi non carborundum"
Old 07-18-2011, 07:19 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,527
Garage
With a turbo you want to stay away from chambers if possible. If a specific sound is required then of course some compromise is a given.
One fairly "raspy" system uses the MagnaFlow X-pattern muffler body, Series 80 if I recall. It is not chambered but the flow is interupted by the X (or y in the case of the 1 in 2 out turbo application). A single out version of this setup would eleminate the turbo whine which I would think is not desirable if you want 911 style raspy.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 07-18-2011, 07:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,669
I have a straight through muffler 12 inches long that sounds like a 1000cc sportbike that has aftermarket exhaust. It has a 4" perforated pipe internally with packing. I love the way it sounds! Might be from Protomotive but I'm not sure.

Has a deep rumble off boost and a nice, somewhat raspy sound under boost.

Last edited by Tippy; 07-18-2011 at 09:19 AM..
Old 07-18-2011, 09:15 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
I'm running a MagnaFlow Y style muffler now. It's got a somewhat deep tone but I am looking for something a bit raspy as timc put it.

I thought sticking with smaller diameter twin pipes would give a raspier tone than a single large pipe. Hell, it's only some tubing, a coupler mufflers and some welding. I've wasted more time on lesser things. I'll post my findings
Old 07-18-2011, 02:47 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
David's Avatar
 
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,694
Garage
I'd leave raspy to the small bore high revving guys.

Mine sounds kind of like a big block at idle and a 934 at full throttle.

Since this picture was taken I've replaced the 3.5" ID x 4.5" OD x 12" long muffler with a 3.5" ID x 6" OD x 17" long muffler to knock off the noise a little and it still sounds wicked!

__________________
2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 07-18-2011, 04:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
E-man930's Avatar
 
Join Date: May 2005
Location: Atlanta GA
Posts: 624
Exactly David - that is some serious hardware.
I will have one similar (used the flange you water jet cut for me) that is brand new for sale shortly. Ended up going Turbonetics and making a whole new V-band clamp setup rather than chop up my sweet KKK flanged muffler.
Old 07-18-2011, 05:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
David, You wouldn't have a sound clip of the car would you?
Old 07-19-2011, 08:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
David's Avatar
 
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,694
Garage
Quote:
Originally Posted by drmatera View Post
David, You wouldn't have a sound clip of the car would you?

No, it's on my to do list but then it has been since I forgot to film it on the dyno years ago.
__________________
2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 07-19-2011, 09:40 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered User
 
BlkBird's Avatar
 
Join Date: Feb 2002
Location: Atlanta, GA
Posts: 938
Nobody worries about passing emissions? I don't see a cat anywhere although I do like David's set up.
__________________
C.H.
Boost Addiction - honestly, I have it under control
1989 911 Turbo Cabriolet
Mods include: Kokeln IC, GHL Headers, Hooligan muffler, Modified K27 7200, BL WUR, LC-1 & XD-16, Bilstein Sports (4), TRG sway bars, Oversize torsion bars, Strut brace
Old 07-19-2011, 11:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
beancounter
 
jwasbury's Avatar
 
Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,369
Quote:
Originally Posted by BlkBird View Post
Nobody worries about passing emissions? I don't see a cat anywhere although I do like David's set up.
'79s are non-catalyst cars from the factory...

My car sounds kind of raspy compared to other 930s. I don't really know why. It sounded raspy with the original USA exhaust and still sounds raspy with the upgraded system (SSIs and rarlyl8 muffler). The only thing I can think of is that the primaries are smallish (both on the original set up and SSIs) compared to others I've seen.

__________________
Jacob
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 07-19-2011, 12:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
BlkBird's Avatar
 
Join Date: Feb 2002
Location: Atlanta, GA
Posts: 938
And being 79s, they are older than the 25 year mark making them immune to emissions testing (at least in Georgia). Just saying I'd like to see a car with a cat, something for us "younger" cars to look at.
__________________
C.H.
Boost Addiction - honestly, I have it under control
1989 911 Turbo Cabriolet
Mods include: Kokeln IC, GHL Headers, Hooligan muffler, Modified K27 7200, BL WUR, LC-1 & XD-16, Bilstein Sports (4), TRG sway bars, Oversize torsion bars, Strut brace
Old 07-19-2011, 12:09 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
jwasbury - that sounds great
Old 07-19-2011, 03:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered User
 
Join Date: Dec 2004
Location: Danville - CA
Posts: 1,259
I'm watching the DVD Moby and The Warehorse Gang right now and its shocking too me how close to 935s my 930 sounds... I have a K27 with one of Brian's single exit exhausts.
__________________
Rob Montgomery
'88 Blk/Blk 930 ('Lucy') - Not Stock & Not Running
Old 07-19-2011, 04:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
Join Date: Jul 2003
Location: Back in B'ham, AL
Posts: 3,416
Nice note!
Old 07-19-2011, 04:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 09:43 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.