Mercedes-Benz Forum banner

1 - 20 of 42 Posts

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #1 (Edited)
straight pipe 2 1/4 ending in a flowmaster 40. its loud proud and quick although not as quick as when i had my pipes cut after the cat. it has nice back pressure to save my breaks with engine deceleration. its a single pipe for now. going to add the second pipe with an x pipe maybe 2 x pipes.
 

·
Registered
SL500, GLC300
Joined
·
1,689 Posts
very nice. that's the problem with these cars. they have engines that could make beautiful sounds but they put on those mufflers that work so freaking good.
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #3
wot is insane it sounds awesome. however its a tad slow to what i had expected. yet its only a single i assume it will be perfect once i get the dual and cut out the crush pipe and weld mandrel bends
 

·
Outstanding Contributor
1997 SL600 Brilliant Silver Sport with grey/dark metal interior, 234K miles
Joined
·
1,977 Posts
Looks a little low, hope you got it coathangered up there good and tight.
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #5
it has hangers on both sides at several places i havent had any problems yet. i never thought of that... could it be the angle of the shot?
 

·
Registered
1993 600SL, 1973 450 SL,1982 380SL,1998 SLK 230, 1968 Firebird, 2001 Dodge Ram 4x4,2005 Ford Escape
Joined
·
5,247 Posts
How about rattle canning it black so it isn't so obvious ! Looks kind of like a hemorrhoid. Better be careful, you don't want to morph a classic Benz Sl into a hoopdie !:nono:
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #7
lol ill take pics on a rack sometime i dont think it looks bad the pics were at night.. and angled so then you can re analyze. lol
 

·
Greek God of the R129
SL500-500SEL-190E
Joined
·
8,391 Posts
straight pipe 2 1/4 ending in a flowmaster 40. its loud proud and quick although not as quick as when i had my pipes cut after the cat. it has nice back pressure to save my breaks with engine deceleration. its a single pipe for now. going to add the second pipe with an x pipe maybe 2 x pipes.
Be aware that the original pipes are 2.75"

Regards,
aam.
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #9
they look smaller... only where it goes to a single does it look larger my estimate was 3" the original system had much more back pressure im sure with 2 mufflers and a cat. i didnt want to go too big as advised by a race fab shop and chicky. the race fab place told me to use 2 1/4 if i used a straight through and 2 1/2 with a flowmaster i used a flowmaster and 2 1/4. theres a noticeable back pressure. but i have already stated that and i assume with 2 pipes instead of one everything will be peachy. if need be i can always re do it. right now i just cruise at 55 on the freeway so hp loss or gain isnt a biggy to me yet. when i get to the stage of turboing i will use 3" probably and it will all be redone anyways.
 

·
Premium Member
95 SL500, K&N, NEOKEN Ported TB, Custom Intake, RENNtech Sport Exhaust, AMG I Monoblocks
Joined
·
10,980 Posts
they look smaller... only where it goes to a single does it look larger my estimate was 3" the original system had much more back pressure im sure with 2 mufflers and a cat. i didnt want to go too big as advised by a race fab shop and chicky. the race fab place told me to use 2 1/4 if i used a straight through and 2 1/2 with a flowmaster i used a flowmaster and 2 1/4. theres a noticeable back pressure. but i have already stated that and i assume with 2 pipes instead of one everything will be peachy. if need be i can always re do it. right now i just cruise at 55 on the freeway so hp loss or gain isnt a biggy to me yet. when i get to the stage of turboing i will use 3" probably and it will all be redone anyways.
As mentioned, the original stock piping going into the muffler inlet is 2.75 inch diameter.

Restricting your exhaust flow with smaller diameter crush bent piping not only hurts performance, it may create an overly rich air/fuel mixture.
This can potentially cause the catalytic converter to overheat, eventually causing the substrate to melt down.
 

·
Registered
1991 R129 500SL
Joined
·
1,820 Posts
+1 on what Ken wrote! Muscle Mercedes, you wrote that you plan to install another 2 1/4 inch pipe, as written by Albert/aam earlier, the original pipe diameter is 2.75. Two 2 1/4 inch is a lot larger (circumference wise) than a single 2.75, which I feel and think will hurt your performance. At another site (500eboard) there were discussions that the "ultimate" exhaust setup for the M119 engine, was the use of dual pipes, from the exhaust manifolds to the rear. Please note that there was no mention of x and y pipe usage, also that of the pipe diameter, but it is my guess that the German owner used a 2.25 inch diameter.

I hope this helps you out.
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #14
i dont have a cat on my car? so thats irrelevant. ive talked to professional race fab shops i trust they know what they are doing. the pipe is the same diameter that comes from the exhaust manifold. the only reason mercedes has the 2 .75 diameter after the resonator is cause it goes to a single pipe which was dual up to that point. maybe your exhaust was different? because i didnt do anything but remove the the cat resonator and muffler (for a flowmaster) the pipe size didnt change...
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #15
2.25 and 2 1/4 is the same thing in my book????? what the heck so you agree with what im doing!
 

·
Premium Member
95 SL500, K&N, NEOKEN Ported TB, Custom Intake, RENNtech Sport Exhaust, AMG I Monoblocks
Joined
·
10,980 Posts
i dont have a cat on my car? so thats irrelevant.
Correct, my apologies as I must have scrolled down the page too quick.

2.25 and 2 1/4 is the same thing in my book????? what the heck so you agree with what im doing!
The point here is, a single 2.25 inch pipe from front all the way back is too restrictive for the 5.0L M119 to perform properly.
Excessive or unwanted back pressure created due to restriction can only have negative effects on overall performance, acceleration and driveability.

IMHO, I would highly recommend further modification of your current exhaust configuration.
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #17
yes i totally agree with that. and i will also be cutting the crush pipe out for mandrel bends. (it was 500 bucks cheaper that way)
 

·
Registered
1993 600SL, 1973 450 SL,1982 380SL,1998 SLK 230, 1968 Firebird, 2001 Dodge Ram 4x4,2005 Ford Escape
Joined
·
5,247 Posts
Congrats on getting the wheels on. Looks pretty damn good! Nice to finally make some progress huh ?:thumbsup:
 

·
Banned
1992 500SL, 2009 C300, 1998 Skyline GT
Joined
·
1,248 Posts
Discussion Starter #19
yeah thanks they were 2k but its night in day in comparison. defiantly worth it. it holds the road better. and feels more nibble. 18" 8 1/2 Front 9 1/2 Rear w 245/40zr18 and 275/35zr18 Nexen n3000 y rating.
 
1 - 20 of 42 Posts
Top