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Thread: Intake Manifold gaskets

  1. #51
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    43,193
    My Cars
    11/88 E32 750iL+98 E36M3
    In my opinion the biggest mistake is to tighten the manifold nuts too much, the Bentley Manual for the E32 has a misprint, on section 113-26 it states:
    intake manifold to cylinder head 22 Nm = 17 ft-lb, NO! These are M6 studs, they require 10 Nm = 7.5 ft-lb.

    Then also the 2 rubber mounting on each side are important, as they support the intakes, 18 Rubber Mounting 4 64536919520 http://www.realoem.com/bmw/enUS/show...diagId=11_0949
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  2. #52
    Join Date
    Oct 2016
    Location
    Montgomery, AL
    Posts
    206
    My Cars
    '92 850i 6-speed (SOLD)
    Quote Originally Posted by Max Lumens View Post
    Au contraire, mon frere. I've had old intake blocks fail using Reinzosil, Toyota gasket, and Hylomar. The silicone gaskets haven't failed yet. The new ones will be gray instead of orange.
    Max -- Do you recommend applying any kind of sealant to your gaskets (like Reinzosil) or do they go on dry? What torque setting did you use for your manifold nuts -- 7.5 ft-lb or 17 ft-lb?
    Last edited by Sniff38; 02-14-2018 at 11:19 AM.

  3. #53
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    43,193
    My Cars
    11/88 E32 750iL+98 E36M3
    see here on page 3 http://km5tz.com/BMW%20850iP3.htm
    quote: I re-installed the intake manifold adapters. I used some of Max's silicone gaskets and some gasket sealer as well just to make sure I have a good seal!

    BMW tightening torqes http://www.e38.org/bmw_torq.pdf
    Intake manifold
    M8 22 Nm
    M7 15 Nm
    M6 10 Nm
    Last edited by shogun; 02-14-2018 at 10:40 AM.
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  4. #54
    Join Date
    Oct 2016
    Location
    Montgomery, AL
    Posts
    206
    My Cars
    '92 850i 6-speed (SOLD)
    Are the BMW recommended torque settings for the IM nuts still valid when using Max's silicon gasket set? I imagine more compression will occur when his gaskets are used compared to just tightening the nuts against the hard factory IM gaskets. That's why I'm asking.

    Sean
    Last edited by Sniff38; 02-14-2018 at 11:18 AM.

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