Long tube header questions
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From: Calgary, AB
2011 C63 AMG P31
Long tube header questions
I am putting in a set of agency power headers next weekend... But I have a few questions:
1) Where the individual pipes meet the double y, is anything supposed to band them to it? They just seem to float in there, what prevents it from leaking?
2) do any install instructions exist? I have a very good idea of what i'm doing, but any tips/tricks would be a hoot.
Thanks!
1) Where the individual pipes meet the double y, is anything supposed to band them to it? They just seem to float in there, what prevents it from leaking?
2) do any install instructions exist? I have a very good idea of what i'm doing, but any tips/tricks would be a hoot.
Thanks!
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C63 AMG
Small hands and patiences.
The removal of the stock logs is the hardest slowest part.
You will want to make sure you have absolutely no leaks before the o2 sensors. These cars run closed loop 24/7. Any leaks before the o2 will cause havok.
The removal of the stock logs is the hardest slowest part.
You will want to make sure you have absolutely no leaks before the o2 sensors. These cars run closed loop 24/7. Any leaks before the o2 will cause havok.
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Patience will definitely be your biggest ally. That and a good selection of tools. MB advises undoing the motor mounts and lifting the engine a little and moving it side to side to get at the exhaust manifold nuts. Barring that (and on Merc63's suggestion) I removed the valve covers to get some valuable space to get my hands in to get the nuts off and back on.
Maybe seal the primaries/collectors with high temp silicone?
Maybe seal the primaries/collectors with high temp silicone?
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2011 C63 AMG P31
Patience will definitely be your biggest ally. That and a good selection of tools. MB advises undoing the motor mounts and lifting the engine a little and moving it side to side to get at the exhaust manifold nuts. Barring that (and on Merc63's suggestion) I removed the valve covers to get some valuable space to get my hands in to get the nuts off and back on.
Maybe seal the primaries/collectors with high temp silicone?
Maybe seal the primaries/collectors with high temp silicone?
I will use high temp exhaust sealant on them, thanks for the tip.
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2011 C63
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Is it do-able without removing valve covers or lifting the motor? I have access to a full hoist and a myriad of tools as we will be doing it in our shop, but an engine lift is... Less then savoury. Me and some other shop staff will be coming in on a saturday to do it, so time is not a limiting factor thankfully.
I will use high temp exhaust sealant on them, thanks for the tip.
I will use high temp exhaust sealant on them, thanks for the tip.
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2011 C63 AMG P31
I am sure it has been done without moving the engine or removing the valve covers but it is a tight squeeze on some locations especially on the driver's side. I worked on stands off of the floor and I am sure a lift will make a big difference for getting at things. With the MBH headers I had to take the engine mount heat shields off to get the headers in place but was able to reinstall them after the headers were in place. GL with the install.
I'm hoping the right combination of extensions and wobbles make it doable. I purchased new exhaust gaskets from MB too, figured I might as well do it right.
Looks like I will be ordering an Akrapovic axleback as well, to help calm the beast.
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
I purchased new gaskets as well and they are a small part of the cost. One of the oem gaskets came out delaminated so I was just as happy I had new ones.
That Akrapovic axleback will give a nice deep rumble and will sound great. Do you have an x-pipe for the mid section? That will help tame the beast as well.
That Akrapovic axleback will give a nice deep rumble and will sound great. Do you have an x-pipe for the mid section? That will help tame the beast as well.
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Thread Starter
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From: Calgary, AB
2011 C63 AMG P31
I purchased new gaskets as well and they are a small part of the cost. One of the oem gaskets came out delaminated so I was just as happy I had new ones.
That Akrapovic axleback will give a nice deep rumble and will sound great. Do you have an x-pipe for the mid section? That will help tame the beast as well.
That Akrapovic axleback will give a nice deep rumble and will sound great. Do you have an x-pipe for the mid section? That will help tame the beast as well.
Last edited by ToXicXxX; Sep 27, 2014 at 06:07 PM.
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2011 C63 AMG P31
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C63 AMG
Use a new mb exhaust manifold gasket, don't use silicone, you will get it everywhere.
Valve covers off makes reaching from the top way easier, gives you a lot more room.
I do most of the work from the bottom on the car with some custom tools I made. Ratchet wrench welded to a piece of metal rod to increase length and also a socket welded to a long metal rod.
Some of the stock nuts can be on pretty right and rusted a bit.
Valve covers off makes reaching from the top way easier, gives you a lot more room.
I do most of the work from the bottom on the car with some custom tools I made. Ratchet wrench welded to a piece of metal rod to increase length and also a socket welded to a long metal rod.
Some of the stock nuts can be on pretty right and rusted a bit.
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C63 AMG
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From: Calgary, AB
2011 C63 AMG P31
Use a new mb exhaust manifold gasket, don't use silicone, you will get it everywhere.
Valve covers off makes reaching from the top way easier, gives you a lot more room.
I do most of the work from the bottom on the car with some custom tools I made. Ratchet wrench welded to a piece of metal rod to increase length and also a socket welded to a long metal rod.
Some of the stock nuts can be on pretty right and rusted a bit.
Valve covers off makes reaching from the top way easier, gives you a lot more room.
I do most of the work from the bottom on the car with some custom tools I made. Ratchet wrench welded to a piece of metal rod to increase length and also a socket welded to a long metal rod.
Some of the stock nuts can be on pretty right and rusted a bit.
Any advice on tools? I imagine the Mac truck will be by this week, I can pick some stuff up if I need.
Last edited by ToXicXxX; Sep 28, 2014 at 03:48 PM.
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From: Arizona
2011 C63
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2018 AMG E63s
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From: Calgary, AB
2011 C63 AMG P31
You should always use new gaskets when doing anything. The minute cost of the gasket is trivial in comparison the the time needed to go back and replace them if they leak. We always treat them as compromised as soon as they have been exposed.
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C63 AMG
Bosch me9.7
I think all the bosch me9.x are closed loop.
Closed loop is great, you can make a few small changes without a retune. Only down side is you have to maintain the exhaust and air boxes, no leaks or it will mess with the systems closed loop feedback.
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C63 AMG
Lots of nuts don't have room for a socket.
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2011 C63 AMG P31
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2011 C63
No, there was a book you could buy on amazon I've seen.
Bosch me9.7
I think all the bosch me9.x are closed loop.
Closed loop is great, you can make a few small changes without a retune. Only down side is you have to maintain the exhaust and air boxes, no leaks or it will mess with the systems closed loop feedback.
Bosch me9.7
I think all the bosch me9.x are closed loop.
Closed loop is great, you can make a few small changes without a retune. Only down side is you have to maintain the exhaust and air boxes, no leaks or it will mess with the systems closed loop feedback.
Thanks, excellent info. I'll look for the book. It's weird, most american cars are open loop at wot. I also follow Indycar racing and the Chevy engine closes the loop, but the Honda runs 100% in open loop and just uses the O2 sensor to gather data so that they can make future changes to the open loop tables.
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2010 C63 AMG FBO, 2014 E63 AMG S
Its doable without removing valve covers, or undoing the engine mounts. On the drivers side I removed the a/c freon than unhooked the ac line that runs there. I had to leave my engine mount heatshields off after installing the headers.
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2011 C63 AMG P31
I don't have AC purge/recharge equipment. Though I know someone who does. Hopefully we can do it without that.
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From: NV
'15 Polar White Edition 507 / 2010 Jeep Wrangler (kart hauler)
I'd keep an eye on them after you install. I had a set of Agency Headers on my 360 Challenge Stradale and both sides cracked at the collector after 1k miles.
