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  #1  
Old 05-01-2006, 09:13 PM
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Any reason this wouldnt work?

on my 86 300e? I would get a straight pipe all through take out the cat and the center muffler.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33636&item=8056504927
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  #2  
Old 05-01-2006, 10:09 PM
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I assume it would work. A serious waste of $$$ imo. That's way too much for a muffler! Look at summitracing.com for a DynoMax race-flo. I won't use anything else, nothing flows better and they sound very cool.
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  #3  
Old 05-02-2006, 01:23 AM
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Sure it would work, but what would be the purpose? That's the question.... If your trying to gain some HP, most likely not. You'll loose so much back pressure that HP will be lost. If your looking to make some noise then this would be the way to go. Tell us what your trying to do and we would be glad to help.
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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

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  #4  
Old 05-04-2006, 01:09 AM
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What size is the inlet to the muffler?
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Last edited by iwrock; 05-04-2006 at 09:14 PM.
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  #5  
Old 05-04-2006, 02:57 AM
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Quote:
Originally Posted by OaklandsGreates
on my 86 300e? I would get a straight pipe all through take out the cat and the center muffler.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33636&item=8056504927
It's illegal to defeat the emission system. The catalytic converter provides many benefits, such as converting the exhaust gasses to carbon dioxide and water.
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Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

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  #6  
Old 05-04-2006, 07:38 AM
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No Backpressure in Exhaust systems is good,

In doing some googling , I found some information on this subject .

They say that you want no backpressure as this will effect engine power .

There are certain mufflers that can reduce backpressure.

No muffler will completely reduce backpressure .

Look at the exhaust system on the Nascar race cars , they have crossover pipes that come down to huge tail pipes and zero mufflers and no backpressure which is what they want .


http://auto.howstuffworks.com/muffler5.htm

Den Downunder
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  #7  
Old 05-04-2006, 12:25 PM
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Quote:
Originally Posted by denis gow
No Backpressure in Exhaust systems is good,

In doing some googling , I found some information on this subject .

They say that you want no backpressure as this will effect engine power .

There are certain mufflers that can reduce backpressure.

No muffler will completely reduce backpressure .

Look at the exhaust system on the Nascar race cars , they have crossover pipes that come down to huge tail pipes and zero mufflers and no backpressure which is what they want .


http://auto.howstuffworks.com/muffler5.htm

Den Downunder
Well, your half right!

Let’s start here. You "cannot" compare a NASCAR engine to a street automobile engine. A NASCAR engine runs at 8500RPM and pretty much stays there for the duration of the race. A road going car is designed for stop and go driving thus needs backpressure for good performance.

Why??

At low RPM, let's say 1000-3000 RPM your street engine is running in its normal driving power band. In this range, the back pressure actually keeps some of the exhaust stroke pressure behind the valve during valve overlap. (When both intake and exhaust valves are open at the same time.) This back pressure actually keeps quite a bit of your fuel/air mixture in the cylinder where you want it, not going out your exhaust.

Okay, Then why have valve overlap???

Now, Lets look at the 3000-10,000+ RPM range. Now the valve overlap helps. Since the 4 stroke combustion process is happening much faster, this overlap is now creating vacuum with the exhaust gasses and is sucking the mixture in the cylinder as fast as it can. At this point there is no need for back pressure. NASCAR engines are designed with lots of valve overlap and fine tuned, free flowing exhausts because they run in a high RPM power band.

In conclusion, If your building a high RPM Mercedes racing engine “not for street use”, run straight pipes. If you want to be a loud street car and don’t care about performance, run straight pipes. If you want peak performance from your exhaust on a street going auto, stick as close as you can to your well engineered stock exhaust and be happy. If you want higher performance the first thing to think about is how to get more air to your intake, not out of your exhaust.

PS: None of this applies to turbocharging, it’s a whole different scenario there as well.

Adam
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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320


Last edited by 300EVIL; 05-04-2006 at 12:43 PM.
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  #8  
Old 05-07-2006, 05:31 PM
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with the dyno max http://store.summitracing.com/partdetail.asp?autofilter=1&part=WLK%2D17263&N=4294923429+4294922711+4294922710+400358+115&autoview=sku would that be coming out the back of the car or would i then put a tip on it. Explain where this would go.
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  #9  
Old 05-08-2006, 05:38 PM
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Quote:
Originally Posted by OaklandsGreates
with the dyno max http://store.summitracing.com/partdetail.asp?autofilter=1&part=WLK%2D17263&N=4294923429+4294922711+4294922710+400358+115&autoview=sku would that be coming out the back of the car or would i then put a tip on it. Explain where this would go.
$110 !?! Ouch!! Go down to the local shucks and just pick up a cherry bomb muffler for $20. Its as close as you can get to a straight pipe at 1/5th the price.
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  #10  
Old 05-08-2006, 08:26 PM
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OaklandsGreates,

Tell me what your looking for out of the modification and how much you want to spend and I'll give you some options.
Adam
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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

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  #11  
Old 05-11-2006, 08:46 PM
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i mean i just want a good performing, good sounding, good quality muffler
i wouldnt want to spend more than $115
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  #12  
Old 05-12-2006, 01:41 PM
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Quote:
Originally Posted by ConnClark
$110 !?! Ouch!! Go down to the local shucks and just pick up a cherry bomb muffler for $20. Its as close as you can get to a straight pipe at 1/5th the price.
After blowing the guts out of three or four cheap glass packs, you'll wish you had gotten something better.
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  #13  
Old 05-06-2008, 11:38 AM
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Since I have to replace my muffler and resonators to get the car to pass inspection, I was looking for a cheap alternative to the "correct one." How does something like a Flowmaster or equivalent muffler sound on a 560? Anybody know?

I don't want my SEC to sound like a TransAm or something like that, but a little more "throaty" sound would be okay. Plus, I thought it might get a little bit of a boost from reduced back pressure.

What say ye?
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1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
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  #14  
Old 05-06-2008, 04:52 PM
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Quote:
Originally Posted by Dee8go View Post
Since I have to replace my muffler and resonators to get the car to pass inspection, I was looking for a cheap alternative to the "correct one." How does something like a Flowmaster or equivalent muffler sound on a 560? Anybody know?

I don't want my SEC to sound like a TransAm or something like that, but a little more "throaty" sound would be okay. Plus, I thought it might get a little bit of a boost from reduced back pressure.

What say ye?
What did that guy with the SEC that went to one of your meets have?? That guy Dark something or Shadow something...
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01 Honda S2000 - dogs dd
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16 Lexus IS250 - wifes dd

it's automatic.
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  #15  
Old 05-06-2008, 05:11 PM
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He had something like a FlowMaster on his, I think. It was not very "Mercedes-sounding," though.
His name is Brian Walko, AKA Darkone. He was a nice guy, but hasn't responded to my E Mails lately. I don't know what he's up to now.
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" The market, like the Lord, helps those who help themselves. But, unlike the Lord, the market does not forgive those who know not what they do."- Warren Buffett

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
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