C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

m271 Kleemann headers PROBLEMS!

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Dec 9, 2009 | 07:51 PM
  #1  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
m271 Kleemann headers PROBLEMS!

Lets start off by saying that I am very happy with the product and have been for about a year now, but I have come to some problems that are easy to fix but just a pain to get done. It came time for my first smog check and of course the first thing to note is of course they are not C.A.R.B. legal so they failed the visual inspection to start things off. I now am forced to switch out back to the stock header just to pass smog Not too much of big deal but just a waste of time. When the shop went ahead to remove the header they stumbled upon a little flaw with the product.





The header seemed to have either warped or there was already a preexisting unevenness with the face of the header that bolts to the block. As you can see from the pictures of the header and the header gasket there is a clear leak at one of the heads. To fix this I apparently have to get it machined to get it flush once again to get rid of the leak.

So you guys with the m271 Kleemann header, when you guys go in for your smog I hope you guys take what I have posted into account. This would be so much easier if the product was C.A.R.B. legal Maybe Cory can mail us the necessary kleemann plate with authorization numbers so we can weld them onto the header
Reply
Old Dec 9, 2009 | 08:28 PM
  #2  
ROLLNNN's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Jan 2008
Posts: 3,597
Likes: 18
From: So Cal... In between LA and OC
2005 CLK320 Vert & 2005 CLK55 AMG
Whats up Charlie,
Did that one guy with the other coupe at the Burbank meet, tell you you had an exhaust leak from your header? was that you?? damn, looks like he was right..

i think i have to smog mine next year, you think if i take it to a place, that will look beyond the header/visual inspection it will pass??

sucks you have to take it off, such a waste of time...
Reply
Old Dec 9, 2009 | 08:43 PM
  #3  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
Originally Posted by ROLLNNN
Whats up Charlie,
Did that one guy with the other coupe at the Burbank meet, tell you you had an exhaust leak from your header? was that you?? damn, looks like he was right..

i think i have to smog mine next year, you think if i take it to a place, that will look beyond the header/visual inspection it will pass??

sucks you have to take it off, such a waste of time...
Yeah it wasn't just leaking from the header, it was also leaking at the downpipe where header connects after the fist O2 sensor because there was no seal ring to begin with.

I couldn't really tell you if you would pass because I never got passed the visual. I would say yes as long as there are no leaks of any kind

Not to worry though, as soon as I pass smog I'm slapping the b*tch back on
Reply
Old Dec 9, 2009 | 09:36 PM
  #4  
Midnight Koop's Avatar
MBWorld Fanatic!
 
Joined: Sep 2006
Posts: 2,697
Likes: 0
From: DC/VA
CL203
sorry to hear the trouble!

i haven't had any problems with my headers (thank god)... and am lucky that virginia doesn't do smog checks.

i recently got a safety inspection to renew my stickers and they didn't say/notice a thing. however, they scratched my front window tint and threatened to take my sticker back. but it was too late since they noticed after they passed me. i guess i'll have to find a different place next year.

keep us posted on the progress. how much was the labor to switch the headers?
Reply
Old Dec 9, 2009 | 11:06 PM
  #5  
splinter's Avatar
Super Moderator
 
Joined: Jul 2006
Posts: 3,365
Likes: 12
From: Orange County, CA
GMC - Miata - Trek - P-Car
That’s too bad about your leaks. WTH?

My otherwise diligent smog guy never noticed its aftermarket exhaust manifolds. Tailpipe blew almost as clean as a springtime breeze anyway.
Perhaps that bottle of his preferred beverage received during each Christmas holiday season improved his vision.

More than one enterprising member (M111 pictured) has fit a heat shield on theirs to help ensure compliance..


photo credit withheld to protect the innocent
Reply
Old Dec 9, 2009 | 11:35 PM
  #6  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
Originally Posted by midnight kompre
sorry to hear the trouble!

i haven't had any problems with my headers (thank god)... and am lucky that virginia doesn't do smog checks.

i recently got a safety inspection to renew my stickers and they didn't say/notice a thing. however, they scratched my front window tint and threatened to take my sticker back. but it was too late since they noticed after they passed me. i guess i'll have to find a different place next year.

keep us posted on the progress. how much was the labor to switch the headers?
Lucky!!

I went to a friends shop so I should be getting a deal, not sure until its out of the shop. Will update for sure, but I have to figure out something before my NEXT smog check

Originally Posted by splinter
That’s too bad about your leaks. WTH?

My otherwise diligent smog guy never noticed its aftermarket exhaust manifolds. Tailpipe blew almost as clean as a springtime breeze anyway.
Perhaps that bottle of his preferred beverage received during each Christmas holiday season improved his vision.

More than one enterprising member (M111 pictured) has fit a heat shield on theirs to help ensure compliance..


photo credit withheld to protect the innocent
Cheeky ******* That is some real creativity right there!
Reply
Old Dec 9, 2009 | 11:39 PM
  #7  
SeaCoupe's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Jan 2006
Posts: 3,212
Likes: 8
From: Pasadena, CA
2002 C230K, 2013 BMW 328, 2015 BMW X5
Splinter beat me to it. I would have left and gone to a different smog shop. However, in your case, you did need to get the warpage solved. A good machine shop will get it out the warpage, no problem.

I think the creative member said the shield was from some asian car.

Ed
Reply
Old Dec 9, 2009 | 11:55 PM
  #8  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
Originally Posted by emrliquidlife
Splinter beat me to it. I would have left and gone to a different smog shop. However, in your case, you did need to get the warpage solved. A good machine shop will get it out the warpage, no problem.

I think the creative member said the shield was from some asian car.

Ed
Yeah although it is a friends shop, I am taking my business elsewhere for sure my next smog check.

Anybody know of a place in the SD area that will look past the visual portion and not be so damn ****?
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-1

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-2

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-3

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-4

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-5

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-6

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-7

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
story-8

Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

 Verdad Gallardo
story-9

8 Mercedes Models With Poor Reliability Records

 Verdad Gallardo
Old Dec 10, 2009 | 01:11 AM
  #9  
XsuperbeeX's Avatar
MBWorld Fanatic!
 
Joined: Oct 2007
Posts: 1,119
Likes: 0
From: SF Bay Area, San Diego
C320 coupe
I know place in LA... not here...
Reply
Old Dec 10, 2009 | 01:19 AM
  #10  
C230 Sport Coup's Avatar
MBWorld Fanatic!
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2002
Posts: 7,258
Likes: 168
From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
Originally Posted by emrliquidlife
Splinter beat me to it. I would have left and gone to a different smog shop. However, in your case, you did need to get the warpage solved. A good machine shop will get it out the warpage, no problem.

I think the creative member said the shield was from some asian car.

Ed
yeh, with an order of flied lice....
you know it's not from an asian car foo....
stock shield, tin shears, a few studs and nuts, + a rain gutter bracket....viola!

I'm due for smog again....

Last edited by C230 Sport Coup; Dec 10, 2009 at 01:21 AM.
Reply
Old Dec 10, 2009 | 07:15 PM
  #11  
MiKeSSw203's Avatar
MBWorld Fanatic!
 
Joined: Sep 2005
Posts: 1,244
Likes: 0
From: South Coast Metro/Cerritos/Yorba Linda California
'05 C230K '10 GLK350 '13 SMART
How are you bolting up your stock manifold? didn't you have to cut your stock downpipe and clamp it to the Kleemann pc?
Reply
Old Dec 10, 2009 | 07:59 PM
  #12  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
Originally Posted by MiKeSSw203
How are you bolting up your stock manifold? didn't you have to cut your stock downpipe and clamp it to the Kleemann pc?
I still have the piece of the oe pipe that Group 5 cut so the shop is doing something with that for a temporary fix just to pass the smog check. I may have to rig up a flange on the downpipe so I can simply interchange if this happens again.

Before I go and do that though, do you have any options to my predicament?
Reply
Old Dec 11, 2009 | 01:25 PM
  #13  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
Passed smog with stock header and eisenmann race Driving stock header sucks!
Reply
Old Dec 11, 2009 | 02:18 PM
  #14  
MiKeSSw203's Avatar
MBWorld Fanatic!
 
Joined: Sep 2005
Posts: 1,244
Likes: 0
From: South Coast Metro/Cerritos/Yorba Linda California
'05 C230K '10 GLK350 '13 SMART
congrats I guess lol

Just was wondering what others were doing. Did Group5 weld the stock pcs back? or rig some kind of clamp like how it was attach to the Kleemann down pipe.

I didn't want to cut mine and had an extra MB pentagon or so shape flange so I had a muffler shop make the pipe extend to the middle of the car and weld everything up that way it all unbolts and my stock bolts right back.
Reply
Old Dec 12, 2009 | 03:16 AM
  #15  
Petje's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Apr 2008
Posts: 1,167
Likes: 11
From: The Netherlands - ROTTERDAM
W205 C400
Originally Posted by CoupeCrazy03
Yeah it wasn't just leaking from the header, it was also leaking at the downpipe where header connects after the fist O2 sensor because there was no seal ring to begin with.
Thats the known "problem" , they forgot to send you the ring/gasket between headers and cat?? Like in this picture?



That was alos my problem when i got the headers, have gone to 10 diff. parts shops to find a gasket that would fit.

Kleemann told me that the gasket wasnt neccesary (wow dont know if i wrote this word correct ) because it will seal itself when the exhaust is getting on high temperature. WRONG!!!

So if you gonna instal the headers again, look for a gasket between headers and cat.


Last edited by Petje; Dec 12, 2009 at 04:04 AM.
Reply
Old Dec 12, 2009 | 10:30 AM
  #16  
CoupeCrazy03's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: Jul 2007
Posts: 1,091
Likes: 0
From: San Diego, California
2003 C230 Kompressor Coupe, 2003 E320, 2003 Chevy Corvette Z06
Originally Posted by MiKeSSw203
congrats I guess lol

Just was wondering what others were doing. Did Group5 weld the stock pcs back? or rig some kind of clamp like how it was attach to the Kleemann down pipe.

I didn't want to cut mine and had an extra MB pentagon or so shape flange so I had a muffler shop make the pipe extend to the middle of the car and weld everything up that way it all unbolts and my stock bolts right back.
They welded the oem pipe that was originally cut back on to fit the stock pcs back on. Is it possible for your to post a picture of your set up? Sounds like a much better idea than the original install instructions from Kleemann

Originally Posted by Petje
Thats the known "problem" , they forgot to send you the ring/gasket between headers and cat?? Like in this picture?

That was alos my problem when i got the headers, have gone to 10 diff. parts shops to find a gasket that would fit.

Kleemann told me that the gasket wasnt neccesary (wow dont know if i wrote this word correct ) because it will seal itself when the exhaust is getting on high temperature. WRONG!!!

So if you gonna instal the headers again, look for a gasket between headers and cat.

Oh I was able to email Cory from Kleemann about that seal ring gasket and he mailed it to me for free

But about that pic. . . why does that header have a Kleemann plate welded on it and mine doesn't??? If I had that, this shiz might be C.A.R.B. legal
Reply
Old Dec 16, 2009 | 03:58 AM
  #17  
Petje's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Apr 2008
Posts: 1,167
Likes: 11
From: The Netherlands - ROTTERDAM
W205 C400
Originally Posted by CoupeCrazy03
Oh I was able to email Cory from Kleemann about that seal ring gasket and he mailed it to me for free

But about that pic. . . why does that header have a Kleemann plate welded on it and mine doesn't??? If I had that, this shiz might be C.A.R.B. legal
Dont know about the plate, has to do with the production or something.... see the differences between the M271 headers... i dont have the plate on it, but it says nothing about emissions, but only M271 i thought.

Also the connection to your cylinder, the 4 pipes are connected by yours, by mine they are not connected... all had to do with production i think... I think Kleemann dont produce them itself, but lett another company produce it.


Your


Mine


Kleemann website (old)
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 06:59 PM.

story-0
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-1
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-2
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-3
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-4
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-5
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-6
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-7
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE
story-8
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.

By Verdad Gallardo | 2026-04-04 10:24:38


VIEW MORE
story-9
8 Mercedes Models With Poor Reliability Records

Slideshow: From problematic air suspensions to early dual-clutch transmission issues, these specific models and years stand out as the least dependable modern Mercedes vehicles.

By Verdad Gallardo | 2026-03-26 18:08:10


VIEW MORE