om617 Intake/Exhaust manifold Gasket R/R & Associated repairs - PeachParts Mercedes-Benz Forum

Sev · #1 03-26-2020, 12:03 PM

Quote:

Originally Posted by Alec300SD

I think gregp1962 meant to say exhaust manifold rather than intake manifold.
The hidden bolt (Item 50) attaches the exhaust manifold (Item 5) to the bracket (Item 47), and is secured by a nut (Item 53) as shown in the second picture on the attached link below.

How to remove the intake/exhaust manifolds with turbo

Quote:

Originally Posted by Alec300SD

The exhaust manifold has an attachment point at the bottom of the T-3 turbo mount.

The exhaust manifold stay (bracket) is attached with a 17mm nut and a 17mm bolt to the above mentioned portion of the exhaust manifold.
(Number 47, 53, and 50 in the attached EPC drawing).

It is hard to photograph.
You need two 17mm wrenches to remove it.
Postion your wrenches by feel.
Hold the wrench on the fastener furthest from the engine, and turn the wrench on the fastener closest to the engine.

Remove that nut and bolt!
Then turbo and exhaust manifold can be pivoted away from the engine, and then lifted up and out of the engine bay

Dude, great info right there. The dual 17mm wrench thing sounds like a pain, but with your pictures, I should be able to figure it out. So, is that your pyrometer in the manifold? Also, how did you achieve that look on the manifold? Did you have a metal shop polish it, or did you add a special coating? Sell me that setup that you have for a reasonable price and I'll send you my core when I remove it?

Alec300SD · #2 03-26-2020, 03:23 PM

Quote:

Originally Posted by Sev

Dude, great info right there. The dual 17mm wrench thing sounds like a pain, but with your pictures, I should be able to figure it out. So, is that your pyrometer in the manifold? Also, how did you achieve that look on the manifold? Did you have a metal shop polish it, or did you add a special coating? Sell me that setup that you have for a reasonable price and I'll send you my core when I remove it?

Yes, the pyrometer probe is on the left half of the throat of the exhaust manifold.
The cooper tube (to the right of the pyrometer probe) is for an exhaust pressure sensor.

That exhaust manifold was ceramic coated by Accessories Plus in Belmont, CA for $150 in 2019.
It is currently installed in 'Desert Rose'.

I do have one set of uncoated stock non-EGR W116 300SD manifolds available.

Sev · #3 03-26-2020, 11:44 PM

Quote:

Originally Posted by Alec300SD

Yes, the pyrometer probe is on the left half of the throat of the exhaust manifold.
The cooper tube (to the right of the pyrometer probe) is for an exhaust pressure sensor.

That exhaust manifold was ceramic coated by Accessories Plus in Belmont, CA for $150 in 2019.
It is currently installed in 'Desert Rose'.

I do have one set of uncoated stock non-EGR W116 300SD manifolds available.

Oh, very nice. I don't drive the car that often, but I would like to have the exhaust manifolds coated. However I'm in So Cal so I can find a place nearby that does hopefully as good work. Cheaper than shipping stuff there and back, it would cost me extra $50. I was also at Pick Your Part today and found a 300sd w116 of all things, with the turbo removed, all the bolts removed from the exhaust manifold (non-EGR), so literally (and this is no joke), all I would need to un-bolt to remove it from the car was the bracket that you provided a picture of. How weird that I went from not knowing about it, to you showing me a picture, to me seeing it right there at the JY in the space of a day. I'm tempted to pay the $39+tax+core charge for it, and ship it up to Belmont to have it coated. That way, by the time I get around to removing the parts off my car and getting ready to reinstall it, I can have it back in the mail. I don't know though, I went from replacing an intake/exhaust manifold gasket, to creating a need for something I didn't even know I needed all in one day, thereby increasing the cost of this job by $250. It's tempting though, because if I dont' do it now, I will probably never remove that manifold in this car's lifetime