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  #16  
Old 06-22-2011, 01:10 PM
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Its almost certainly coincidental. The mufflers are straight through. If you can run a coat hanger through it....

Check the important things, IP linkage, blocked ALDA, dirty filters, bad fuel.

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  #17  
Old 06-22-2011, 01:49 PM
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Gas or diesel doesn't matter. Engines produce pulses. pulses reflect back and affect scavenging. Anything that affects the reflective wave can affect performance. I know first hand, not theoretical how straight through muffler killed performance. In theory no exhaust produces highest hp at top RPM at the expense of lower end torque. This is not theory it is fact. Knowing these facts it is at least plausible that a large hole could affect performance. If it acts like an expansion chamber then a hole will negate that positive affect. It also might be coincidental. As usual I subscribe to fix what is broken then assess so I would be fixing the muffler first.
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  #18  
Old 06-22-2011, 02:02 PM
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Fact eh?
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  #19  
Old 06-22-2011, 03:05 PM
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Warning: Sarcasm is spoken here !

Quote:
Originally Posted by azitizz View Post
I was just wondering if holes in a muffler would affect the power in a 85 300TD wagon.
By "power in a ...wagon" do you mean 12V, 120V from an inverter, Solar, wind, persuasion, positive thinking? What kind of power are you toting around in your TD?


Quote:
Originally Posted by azitizz View Post
Recently my car seems to have been less powerful
So by 'have been' it has power back? Note that these OM617 powered W123s are dogs. So if you ride your bike down hill for a few days, the W123 might seem slow in comparison.

Quote:
Originally Posted by azitizz View Post
and I found out there is a 3rd hole in the muffler after patching 2.
Might I suggest turd polishing? (laugh with me please). Perhaps just cut the muffler out and add a piece of straight pipe. I did this with 2 of my benzos and it worked great. No noticeable increase in noise, as compared to before the leaky exhaust. It was quieter after the repair, so mission accomplished and zero dollars spent using left over piece of straight pipe. Granted not everyone has a Mig Welder or access to one, so this project offers some challenges.



Quote:
Originally Posted by azitizz View Post
The loudness of the 3rd hole discovered seems to be coincidentally timed with the power loss.
If you read this by itself out of context, this is HILARIOUS !


Quote:
Originally Posted by azitizz View Post
Could there be any relation. I didnt think so, but hey, Im still learning about these machines..
Read below.



Quote:
Originally Posted by 1980sd View Post
All your power could be running out that hole...
I nearly spit out my coffee !


Interesting digressions in earlier posts.

If I may address the OP directly and start with my disappointment that no one suggested the piece of crap muffler could be dropping parts internally and maybe its restricted inside? I mean the stupid thing is going into failure, why not fail inside?

Cut the muffler out, replace with piece of straight pipe and come back and tell us how much nicer it is to hear the turbo and the nice exhaust note.

As for power loss, when was the last time fuel filters were replaced? Just because it was done 1000 miles ago, doesnt mean there isnt a problem. How good are the fuel hoses? Any leaks? Is the airfilter clean? How about the line from the intake to the alda? Is the banjo clean? Read about OM617 power loss and address those obvious items as well.

Are your brakes dragging? Any tires low on pressure? Did you have the A/C or Defrost on?

Note to all reading this: The Turbo acts as the first muffler. So having a straight tube exhaust is still muffled.

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  #20  
Old 06-22-2011, 04:12 PM
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Quote:
Originally Posted by ah-kay View Post
Leathermang: You omitted the first paragraph in your quote, by design or mistake?.....

Typically, diesel exhaust contains some carbon monoxide, but the amounts are very minimal and not fatal for an otherwise healthy person."

In a nutshell, a hole in the muffler will not kill the OP, definitely not in a moving car.
You said Diesels produce NO CO....That is UNTRUE.
You clearly do not understand the physics of red blood cells and their relative affinity for attaching CO instead of O2 and the consequences.... Long term... hours .... of exposure to even small amounts of CO can produce serious consequences health wise.. and you ignore the " otherwise healthy person" description... there are lots of older, sick, compromised immune system people around....
Did you only read ONE reference and then post ?
You are as off base on this as you are on AC issues.
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  #21  
Old 06-22-2011, 04:44 PM
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Quote:
Originally Posted by leathermang View Post
You said Diesels produce NO CO....That is UNTRUE.
You clearly do not understand the physics of red blood cells and their relative affinity for attaching CO instead of O2 and the consequences.... Long term... hours .... of exposure to even small amounts of CO can produce serious consequences health wise.. and you ignore the " otherwise healthy person" description... there are lots of older, sick, compromised immune system people around....
Did you only read ONE reference and then post ?
You are as off base on this as you are on AC issues.
Why you always drag up A/C when in disagreement? What I am saying is that CO leak in muffler is never a consideration with diesel car. As far as I know, no one has ever killed by CO poisoning by diesel car.
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  #22  
Old 06-22-2011, 04:54 PM
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I think you two guys need a hug. Can we get a virtual hug going here? Did someone get whacked by the irritable and way to serious tree?

It's about 5pm EST can we have a beer? Chill a little?
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  #23  
Old 06-22-2011, 05:53 PM
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Quote:
Originally Posted by Renntag View Post
Note that these OM617 powered W123s are dogs.
YMMV.
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  #24  
Old 06-22-2011, 06:53 PM
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Quote:
Originally Posted by winmutt View Post
YMMV.
IITYWTMWYBMAD
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  #25  
Old 06-22-2011, 09:33 PM
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It seems as though Dyno results, years of testing and first hand experience still will not dissuade the OP that a tuned exhaust can produce more HP over a wider power band than no exhaust at all.No exhaust after the turbo will likely produce the most peak HP but not the average over the whole RPM range. So all the racers are just idiots for carting around all the various pipes for track conditions. They should just cut it as close to the turbo as possible and call it a day.
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  #26  
Old 06-22-2011, 09:45 PM
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Quote:
Originally Posted by Renntag View Post
If I may address the OP directly and start with my disappointment that no one suggested the piece of crap muffler could be dropping parts internally and maybe its restricted inside? I mean the stupid thing is going into failure, why not fail inside?



That would cause the power to back up into the engine making more available to the rear wheels...
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  #27  
Old 06-22-2011, 10:21 PM
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Quote:
Originally Posted by Renntag View Post
IITYWTMWYBMAD
Playing scrabble? There is plenty of power to be had out of a 617.
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  #28  
Old 06-22-2011, 10:23 PM
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Quote:
Originally Posted by woodboat3 View Post
It seems as though Dyno results, years of testing and first hand experience still will not dissuade the OP that a tuned exhaust can produce more HP over a wider power band than no exhaust at all.No exhaust after the turbo will likely produce the most peak HP but not the average over the whole RPM range. So all the racers are just idiots for carting around all the various pipes for track conditions. They should just cut it as close to the turbo as possible and call it a day.
Track conditions usually limit sound output. All that is needed is back pressure to keep the valves from burning out. Nothing else. Diesels have turbos which provide plenty of back pressure.
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  #29  
Old 06-22-2011, 10:25 PM
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Quote:
Originally Posted by 1980sd View Post
That would cause the power to back up into the engine making more available to the rear wheels...
Indubitably!
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  #30  
Old 06-22-2011, 10:35 PM
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You just can't teach some people. You give them facts and they just make up crap as rebuttal. I even provided links. One more quote

OK now, how on earth can a free-flow exhaust fail to help the turbo spin faster? Surely there's no downside to this one. Take a stock turbo car, fit a bleed valve, fit a 4" downpipe with no backbox, and you're King of the Hill.

...Boost spikes anyone?

To even think that exhaust dumping straight out of the turbo would give more power than a tuned exhaust or that drilling holes in a muffler would make things better is crazy. Doesn't anyone understand the pulse waves going on inside of an exhaust system? Not one person here knows anything about exhaust? I give up

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