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Thread: Intake manifold gaskets difference

  1. #1
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    Intake manifold gaskets difference

    While renewing all the intake gaskets I have ordered new set of gaskets for the intake manifold.
    Two important features:
    1.original gaskets are made by elring :
    b8a1c88b4079fadf2340fb9a570cd9b2.jpg


    2.by elring online catalog I have chosen 754.591 and 764.605
    But they are not fitting a little bit.
    Will order 147.180 and 148.190 next time

    58093686ffd3292474205cb9fbd701f1.jpg a4c50b156aa458a862e24fe536863147.jpg

    Maybe will help and save your time

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    E500E Guru doolar's Avatar
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    Re: Intake manifold gaskets difference

    When I ordered mine for this job I got them from the dealership. They were not that expensive IIRC. I'd go with Mercedes OE on them no matter, you don't wanna do it all over again because of bad gaskets. Just my 5 cents!
    Thomas
    1994 E420
    1993 500E - (my fathers)

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    Re: Intake manifold gaskets difference

    Quote Originally Posted by E500star View Post
    While renewing all the intake gaskets I have ordered new set of gaskets for the intake manifold.
    ...
    Maybe will help and save your time
    Hi, to what car did you order? As I can see, the new ones are for the M 119 980, I found out when I
    changed the manifold on the E60 motor, the very small holes for the crankcase and gas regeneration
    valve, the tank "fumes" are not, corresponding. The pockets adjacent to the intake ports are
    bigger on the M119 970 heads and will not fit, so you must have the gasket for the head you are
    having, see the dowelpin hole, it sits under the ports, two on each side. on the 980 manifold, you can see
    the dowelpin hole nearby the the outer two ports, on the upper part of the gasket.

    This means, you have to fiddle a bit with the manifold, dowelpin hole and the fume regenerating holes
    to correspond either way, if, as in my case be able to use the HWA manifold, E50 E60 980 variety on
    119 970 LH heads, it is possible BUT takes some "fiddeling" as said.

    Third pix is E60 LH port (upside down, the other are E50 ports
    Attached Images Attached Images
    '92 500E 6.0 AMG
    '93 400E 5.0 AMG
    '96 E50 AMG
    '96 CL500
    '99 C43 AMG

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    Re: Intake manifold gaskets difference

    Quote Originally Posted by Taxi Driver View Post
    Hi, to what car did you order? As I can see, the new ones are for the M 119 980, I found out when I
    changed the manifold on the E60 motor, the very small holes for the crankcase and gas regeneration
    valve, the tank "fumes" are not, corresponding. The pockets adjacent to the intake ports are
    bigger on the M119 970 heads and will not fit, so you must have the gasket for the head you are
    having, see the dowelpin hole, it sits under the ports, two on each side. on the 980 manifold, you can see
    the dowelpin hole nearby the the outer two ports, on the upper part of the gasket.

    This means, you have to fiddle a bit with the manifold, dowelpin hole and the fume regenerating holes
    to correspond either way, if, as in my case be able to use the HWA manifold, E50 E60 980 variety on
    119 970 LH heads, it is possible BUT takes some "fiddeling" as said.

    Third pix is E60 LH port (upside down, the other are E50 ports
    You r exactly right!
    Very useful info!
    My engine is 982 but intake manifold is from 974!
    Now I discovered that I bought gaskets for 974 that’s why they are not fit to the dowel pins.
    Now I think want to do
    Buy 982 gaskets to fit gas holes or just to made two additional holes in 982’s gaskets

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  9. #5
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    Re: Intake manifold gaskets difference

    Quote Originally Posted by E500star View Post
    You r exactly right!
    Very useful info!
    My engine is 982 but intake manifold is from 974!
    Now I discovered that I bought gaskets for 974 that’s why they are not fit to the dowel pins.
    Now I think want to do
    Buy 982 gaskets to fit gas holes or just to made two additional holes in 982’s gaskets
    Oh, I see. This is an intricate fitment, not only the dowelpins, also the ventilating holes, one for each
    intake port will not be functioning as one or two will be blocked by the manifold itself.

    You have to modify the manifold, 1. to fit the dowelpins, 2. make a modification of the grove where
    the 980 manifold have a couple of "reliefs"cut out to let gases to reach the portion that communicate
    with the intake port, I'm sorry I can not find a pict. of the 980 manifold...

    The dowel pins are there to keep the gaskets in the right position and you may have to bore a hole
    IN the manifold to clear the dowel, it is a try and fit to get it right BUT the gaskets MUST follow the
    head it was designed for, not be modified to the manifold!
    Attached Images Attached Images
    '92 500E 6.0 AMG
    '93 400E 5.0 AMG
    '96 E50 AMG
    '96 CL500
    '99 C43 AMG

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    Re: Intake manifold gaskets difference

    Continuing investigations
    And you r right again-I need to make additional channel as in sl500 98x manifold.

    In this points on the both sides:
    997d71a45e086c3cfc2f0575bc921fea.jpg 53f988b412cebe80e06b54e580373de1.jpg

    Hmm....what is the idea of this channels?
    And thank you that you showed me this special difference!
    Attached Images Attached Images

  12. #7
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    Re: Intake manifold gaskets difference

    As I was saying about that channel... see this foto of the 400 manifold where I copied the extra cut/recess, AS PER E50
    or 980 ME manifolds. Because the smaller recesses in the 980 heads and the different position of the ventilating holes
    in the gasket. see the pen Point.... thats what you have to do to your 074 manifold...
    Attached Images Attached Images
    '92 500E 6.0 AMG
    '93 400E 5.0 AMG
    '96 E50 AMG
    '96 CL500
    '99 C43 AMG

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  14. #8
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    Re: Intake manifold gaskets difference

    Cut new holes in the gasket
    cc545fccd51882efb20c7ba3f9790b4c.jpg

    And made additional ports on each side:
    d07983934a0ab8cb129ad37492fc21c9.jpg 5463563bb9e4e161f9ca1b4c1c619079.jpg

    Hope it will take a necessary effect

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  16. #9
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    Re: Intake manifold gaskets difference

    Soo, what inlet manifold gaskets did you use? As said, the manifold gasket have to go with the head
    not the other way around. By cutting the manifold at the longest recsess two/manifold side (4 Cuts)
    There IS no need for extra holes, I did the misstake trying to convert the 980 gasket to the 074
    head, as I was using the 980 manifold, some extra holes and fit to the 974 dowelpin.

    Result, the ventilation Went furious and did suck in oil from the crankcase, maybe because the tight
    6liter and the manifold convertion, I do not know why but the vacuum was, is very high...

    What I will have to do, is welding those recesses in the 980 manifold to make it as the 974 and
    use the 974 gaskets, once again, the gasket follows the head...

    The Chambers at the head where the exessive gases and fuel fume goes into the intake port
    as the ones in the manifold communicate ONLY by the small holes, they act as a restriction
    thats why no additional holes should be done. You may be looking at the problem I first experienced
    Fat White smoke of burnt oil sucked from the crank case.
    '92 500E 6.0 AMG
    '93 400E 5.0 AMG
    '96 E50 AMG
    '96 CL500
    '99 C43 AMG

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