HOW TO: M113 intake manifold dissassembly "Part1"

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HOW TO: M113 intake manifold dissassembly "Part1"
The intake manifold is a part on this M113. But also on the M112 engine. That is according mercedes not serviceable. You can not order any parts internally for this manifold. Only the complete unit . Also there is not much info in the Mercedes manual about this. There is noting about how to dissassembly it.
But if you look inside trough the throttle body entrance. Or through the runners. it is really dirty. This because of the crankcase breather connection to the intake and the EGR system. This combination will created the oil exhausr gas mix. That will back carbon on the intake manifold and Leave a black oil substance everywhere in the manifold
This will have influence on the temperature and optimal flow in the manifold. So for sure after a Engine rebuild this needs to be cleaning The manifold is pretty easy to dissassembly. The are 4 top parts and 2 bottom parts.
The top parts are. Outside cover. The inside channel seperator. and 2 small parts that are mounted on the channel seperator.
The bottom half parts. Outside cover and inside channel seperator with flap assembly.
I cleaned all the parts with a regular degreaser. This intake manifold was easier to clean then all the other engine parts. And this is because the Temperature in the intake manifold will not reach a high temp like 100 c in the engine . The intake will max hit like 60c. so the oil exhaust gas mix. will not get backed as in the engine .
The parts from the intake are dont have much in perfections on the inside. the only thing i found where some cracks on 1 mounting point of the fuel rail. but this could be there for years i think. I will have a look to support this a little better so it will not brake of in the future.
Also to mention there is a vacuum chamber in the bottom half of the manifold. This is used for the actuator the controls the flaps for long and shorter routing. this chamber has 2 plastic covers on each end and has a rubber plastic mounting that was old and damaged in my manifold.
I don't really like the design because it is not easy to reach and there are no parts that can be ordered. so i will block all the holes for this chamber. and use a different vacuum solution for this
if there are any questions just ask
JMSpeedshop.com

[@giopirmisashvili5514]

Thank you

[@Ah57919]

Keep up the good work !💯

[@JMSpeedshop]

Thanks 👍

[@OnlyKelp]

I had recently done this in my m113 project as well. I dropped something on my intake and cracked the upper half, but I had another bad intake with a cracked bottom half so I Frankenstein’d them together to make 1 good one

[@JMSpeedshop]

Perfect 👍

[@billr7056]

Wow! Nice work.

[@JMSpeedshop]

Thanks

[@ANDERZENAMG]

interested to see what you do with the vacuum chambers and how using the other ports will behave, I chose to just use the existing port and exit just with upgraded to 1/8 fuel rated line and a 3/8 hose piece cut to the same size at the little rubber factory piece, much tighter fit than factory. I then sealed all of it in that spot and silicone the outside of the connection as well.

[@JMSpeedshop]

I think for you this will work pretty good. But when boosting the engine i doubt it will hold

[@Chetsterling]

That manifold looked very surprised at the end lol

[@narcissistinjurygiver2932]

i need to get a new manifold for my m113.

[@W210Garage]

Do you plan to upgrade trottle body? As i know trottle body from newer 550 engines fits on M113 with minor manifold modifications. 74 mm vs 82 mm...

[@JMSpeedshop]

I leave the oem throttle body . I have 3 " piping and intercooler so upgrading the throttle body will not help because of the rest of the system is still smaller

[@W210Garage]

@@JMSpeedshop Agree :)

[@theinsaneshecklador6598]

Is the wire connections the same or do they need to be moved around?

[@W210Garage]

@@theinsaneshecklador6598 i'll do that mod on my 113 very soon and will report. Now i have to clarify the details.

[@theinsaneshecklador6598]

@@W210Garage 👍

[@theinsaneshecklador6598]

2:07 I've heard they are magnesium but when I've tested them with vinegar (top and bottom halves) they don't react at all. That makes me think they are aluminum. I could be wrong though and maybe it varies by year or perhaps the magnesium has some sort of coating or alloy mix that doesn't react. 3:13 Is that dyno sheet posted up somewhere for viewing? 23:00 I wonder why they have that vacuum chamber instead of just using the vacuum in the rest of the manifold. Does it hold vacuum a little longer than the rest of the manifold at full throttle? That might help slow down the activation of the variable runner length flaps for a bit longer. Or is it for some completely other reason?

[@JMSpeedshop]

If it is not magnesium i dont now what it is very hard. And for aluminum it feels to thin. That dyno sheets i found on Facebook. When i put in on the dyno i will make sure to show the difference . Maybe on full throttle the airflow is not a very high vacuum. So it can be that the vacuum in the manifold is not enough to control the actuator at every moment

[@theinsaneshecklador6598]

@@JMSpeedshop 👍

[@Matt_from_Florida]

@@JMSpeedshop The spec-sheet for the M113 engine says that the intake manifold is magnesium.

[@CL500MBZ]

Maybe it's a high mag aluminum alloy. There are many types used in all kinds of industry.

[@JMSpeedshop]

Can be but magnesium is has also aluminum in it . The sheet i have somewhere but not online. The chamber is just as a capacity chamber. If you go full throttle there is a low vacuum in the intake .and maybe not enough that let the valve switch

[@BernardBerdon]

Could you remove the flaps and all of the "intestines" and put it back together? Would it actually make any gains over OEM restrictive airflow? Kind of like gutting the restrictive OEM airbox... Thanks. Please keep posting these great videos, your build is awesome!

[@JMSpeedshop]

There is a possibility to remove the flaps. And the mechanism. There are 2 stainless steel screws in the flaps connected to the shaft. I have tried to remove them. But did not want to damage them. So i left them in. I think the shaft bushings are a sort of hard plastic. The quality is pretty good. I have seen some dyno sheets in the past about the torque and hp curve between short and long routing . And it is really making a difference . It is really good in compensation for not have VVT cams. If you dont want to use the double routing intake. I would go with ITB's. Will sound awesome and better to tune for your benefits. With faster change possibility of the long plenums

[@BernardBerdon]

@@JMSpeedshop Agreed. I have looked it up and it seems awesome... Please have patience with me I am/was a Mercedes-Benz OEM mechanic (translation we just replace parts with OEM ones XD). I have a W211 E500 with M113 engine and am interested in improving the restrictive OEM airflow these engines have. You have some wonderful ideas and skills and I am looking forward to your next video! Greetings from Zagreb!

[@JMSpeedshop]

Sound Nice w211 💪

[@justinbolster5406]

@@JMSpeedshop so very interesting to dive into areas no one covers . Really enjoy your posting videos.

[@JMSpeedshop]

Thanks👍

[@goldar4846]

What's the purpose of the vacuum chamber?

[@JMSpeedshop]

Having vacuum to control the actuator for the flaps in the plenum

[@i99albsi]

First!

[@JMSpeedshop]

O yeah 😎💪