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Retarded PT
Cruiser Fan
Posted: Feb 27, 2008, 7:50 PM
Post #1 of 18
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anybody heard of any problems not running a muffler on the stock turbo motor? cuz ya know, turbos LOVE air
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Posts: 48 | From: Pilot Point, Texas
| Registered: Jun 27, 2005, 7:14 PM
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mean green
Cruiser Addict
Posted: Feb 28, 2008, 1:07 PM
Post #2 of 18
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Re: [Retarded PT] No muffler
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Quote:
anybody heard of any problems not running a muffler on the stock turbo motor? cuz ya know, turbos LOVE air
My SRT-4, which has the same motor/turbo as the GT, came stock without a muffler, just a couple of 12" resonators in the midpipe. There's people running the GT without a muffler.
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2005 Stone White SRT4
2004 Graphite Auto
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Posts: 807 | From: Oregon
| Registered: Feb 19, 2002, 12:00 AM
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tractorfix
Cruiser Buff
Posted: Feb 28, 2008, 2:28 PM
Post #3 of 18
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Re: [mean green] No muffler
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The first thing I did to mine was chuck the muffler. It sounds awesome and the motor is a lot snappier. . I use an old supertrap that I got someplace. It has ni discs on it so it is basically now just a resonated tip, and given the condition of the wadding I don't think its doing much resonating. If you like how a SRT-4 sounds you will like this.
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04 DC3#384, returned via lemon law. NOW 04 DC3#392 Both are 5 speeds. Plastic intake,ATX TB,Airbox gutted,Iridiums,Magnecores,K&N,Discless Supertrapp,SRT-4 boost gauge, Hurst STS,XM,Mopar Powered Sub, 6 Silverstars, Rear fogs, Mopar hitch
69 GTS 340 survivor, 70 Duster 340+6, 71 Valiant Survivor, 77 M880(Cummins power), 93 W250 Cummins, 2007 Caravan SXT
I bleed MOPAR BLUE- Good Riddance Daimler!
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Posts: 78 | From: Uxbridge, Ontario, Canada
| Registered: Mar 19, 2005, 3:56 PM
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Patrick78
Cruiser Buff
Posted: Feb 28, 2008, 6:49 PM
Post #4 of 18
(871 views)
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Re: [tractorfix] No muffler
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So if you just remove the muffler, what do you put in its place? And when you "remove the muffler" do you just cut it off and replace it with a section of typical exhaust piping?
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Posts: 66 | From: Woodbridge, Va.
| Registered: Dec 28, 2007, 1:44 PM
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LeoCruiser
Cruiser Expert
PT Cruiser Club Member
Posted: Feb 28, 2008, 8:05 PM
Post #5 of 18
(869 views)
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Re: [mean green] No muffler
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This thought is on older vehicles...
I thought that when you take off the muffler without replacing it with something else, you would burn the valves because the muffler would cool the return air before it would reach the motor.
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"I rate enthusiasm even above professional skill."
-Ed Appleton
My PT:
http://www.ptcruiserclub.org/...ut14831/gallery1.htm
2002 Steel Blue
Classic Edition
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Posts: 290 | From: N/A
| Registered: Jul 3, 2007, 8:23 PM
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mean green
Cruiser Addict
Posted: Feb 28, 2008, 11:38 PM
Post #6 of 18
(867 views)
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Re: [LeoCruiser] No muffler
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Quote:
This thought is on older vehicles...
I thought that when you take off the muffler without replacing it with something else, you would burn the valves because the muffler would cool the return air before it would reach the motor.
Turbo cars love zero back pressure. A lot of turbo owners run with a cutout that are part of the downpipe so basically no exhaust system at all.
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2005 Stone White SRT4
2004 Graphite Auto
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Posts: 807 | From: Oregon
| Registered: Feb 19, 2002, 12:00 AM
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LeoCruiser
Cruiser Expert
PT Cruiser Club Member
Posted: Feb 29, 2008, 1:28 PM
Post #7 of 18
(850 views)
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Re: [mean green] No muffler
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That is good to know; thanks. I know 0 about turbo cars, even though I have always wanted one.
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"I rate enthusiasm even above professional skill."
-Ed Appleton
My PT:
http://www.ptcruiserclub.org/...ut14831/gallery1.htm
2002 Steel Blue
Classic Edition
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Posts: 290 | From: N/A
| Registered: Jul 3, 2007, 8:23 PM
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mean green
Cruiser Addict
Posted: Feb 29, 2008, 4:07 PM
Post #8 of 18
(847 views)
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Re: [mean green] No muffler
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Quote:
Quote:
This thought is on older vehicles...
I thought that when you take off the muffler without replacing it with something else, you would burn the valves because the muffler would cool the return air before it would reach the motor.
Turbo cars love zero back pressure. A lot of turbo owners run with a cutout that are part of the downpipe so basically no exhaust system at all.
They do still have an exhaust system. When the cutout is closed the exhaust system works. Didn't want you to think they weren't using an exhaust sytstem as an open cutout is really loud.
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2005 Stone White SRT4
2004 Graphite Auto
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Posts: 807 | From: Oregon
| Registered: Feb 19, 2002, 12:00 AM
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Retarded PT
Cruiser Fan
Posted: Mar 3, 2008, 7:45 PM
Post #9 of 18
(822 views)
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Re: [mean green] No muffler
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Thanks for the information yall. i had heard that sometimes running no muffler can ruin the valves, but i also heard that turbo's do need any back pressure? or does the cat. converter still create enough back pressure for the engine?
and i thought that the SRT-4 had a bigger turbo in them? (havent really read up on them much to see what the big difference is)
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Posts: 48 | From: Pilot Point, Texas
| Registered: Jun 27, 2005, 7:14 PM
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mean green
Cruiser Addict
Posted: Mar 3, 2008, 11:19 PM
Post #10 of 18
(819 views)
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Re: [Retarded PT] No muffler
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Quote:
Thanks for the information yall. i had heard that sometimes running no muffler can ruin the valves, but i also heard that turbo's do need any back pressure? or does the cat. converter still create enough back pressure for the engine?
and i thought that the SRT-4 had a bigger turbo in them? (havent really read up on them much to see what the big difference is)
Same turbo.....Turbo wants no back pressure.
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2005 Stone White SRT4
2004 Graphite Auto
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Posts: 807 | From: Oregon
| Registered: Feb 19, 2002, 12:00 AM
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Retarded PT
Cruiser Fan
Posted: Mar 4, 2008, 7:09 PM
Post #11 of 18
(806 views)
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Re: [mean green] No muffler
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ya know, i had a gut instinct but i wanted to ask anyway :)
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Posts: 48 | From: Pilot Point, Texas
| Registered: Jun 27, 2005, 7:14 PM
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Patrick78
Cruiser Buff
Posted: Mar 5, 2008, 3:14 AM
Post #12 of 18
(800 views)
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Re: [Retarded PT] No muffler
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Doesn't back pressure determine spool up time of the turbo. No back pressure creates slower spooling of the turbo and too much back pressure obviously slows down the escape of exhaust. So is the setup on the PT difference because all the other turbo cars I've owned, nobody has ever said the turbo wants no back pressure??
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Posts: 66 | From: Woodbridge, Va.
| Registered: Dec 28, 2007, 1:44 PM
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rsobhian
Cruiser Expert
Posted: Mar 5, 2008, 5:47 AM
Post #13 of 18
(793 views)
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Re: [Patrick78] No muffler
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Back pressure never helps spool-up times - the faster the exhaust gases can exit the faster any given turbo is going to spool up.
Spool time is a function of the size and shape of the turbo blades. There is some good technical information about it in an article off of a thread Mean Green had referenced in another thread on this site. If you like technical stuff, it's a good read.
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2001 silver Limited-Touring (leather/suede, 4W disk, traction, heated mirrors & all :-)
Mods: Tokico HP all around / Energy Suspension Master Kit / K&N drop-in / R1 Concepts drilled & slotte disks all around / Enkei RPF1 16x7 wheels & Conti Extreme Contact rubber / Prestige APS620 remote starter
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Posts: 425 | From: MA
| Registered: Aug 2, 2007, 7:47 PM
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Patrick78
Cruiser Buff
Posted: Mar 5, 2008, 12:39 PM
Post #14 of 18
(783 views)
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Re: [rsobhian] No muffler
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It was a good article. Very informative and mostly over my head. :-)
But always good to read info like that. Thanks for passing it on.
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Posts: 66 | From: Woodbridge, Va.
| Registered: Dec 28, 2007, 1:44 PM
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Retarded PT
Cruiser Fan
Posted: Mar 5, 2008, 6:16 PM
Post #15 of 18
(771 views)
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Re: [Patrick78] No muffler
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i agree, it was completely informative and i was able to understand most of it and it makes sense, no doubt about it.
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Posts: 48 | From: Pilot Point, Texas
| Registered: Jun 27, 2005, 7:14 PM
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tractorfix
Cruiser Buff
Posted: Mar 14, 2008, 5:59 PM
Post #16 of 18
(727 views)
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Re: [Retarded PT] No muffler
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Well, contrary to my previous post, the wadding in my old Supertrapp must have been doing something because today I blew the whole core out of the old thing. Now I have a straight piped exhaust with what amounts to a 18 inch megaphone on the end of it. It got noticably louder but I STILL LOVE IT. Not ricey at all.
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04 DC3#384, returned via lemon law. NOW 04 DC3#392 Both are 5 speeds. Plastic intake,ATX TB,Airbox gutted,Iridiums,Magnecores,K&N,Discless Supertrapp,SRT-4 boost gauge, Hurst STS,XM,Mopar Powered Sub, 6 Silverstars, Rear fogs, Mopar hitch
69 GTS 340 survivor, 70 Duster 340+6, 71 Valiant Survivor, 77 M880(Cummins power), 93 W250 Cummins, 2007 Caravan SXT
I bleed MOPAR BLUE- Good Riddance Daimler!
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Posts: 78 | From: Uxbridge, Ontario, Canada
| Registered: Mar 19, 2005, 3:56 PM
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Retarded PT
Cruiser Fan
Posted: Mar 17, 2008, 4:07 AM
Post #17 of 18
(704 views)
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Re: [tractorfix] No muffler
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hehe, see, no muffler is better anyway :P
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Posts: 48 | From: Pilot Point, Texas
| Registered: Jun 27, 2005, 7:14 PM
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madkat
Cruiser Fan
Posted: Mar 18, 2008, 4:02 PM
Post #18 of 18
(691 views)
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Re: [tractorfix] No muffler
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I had the Borla dual exhaust kit off of a base cruiser on my GT. After my accident and the month that it was sitting my resonator had rusted through and had a huge hole in it.. so now I run a straight pipe but still have the dual tips, I like the sound, it pops a lot more..
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2003 GT Cruiser
Fully Loaded
Borla Dual Exhaust
K&N Drop In filter
Viper Remote Start/ Keyless entry
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Posts: 46 | From: Chicago
| Registered: Jun 4, 2006, 7:35 PM
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