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40v 4.2 intake manifold removal manual

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Old Feb 20, 2025 | 10:58 AM
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Default 40v 4.2 intake manifold removal manual

Does anyone know where the manual is for installing the intake manifold, specifically the bolt torquing order?

The engine workshop manual I have simply says this, seemingly referencing some other document:
– Install intake manifold ⇒ Rep. Gr. 24 .

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Old Feb 20, 2025 | 11:04 AM
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Its in the Motronic Injection and Ignition system manual.

- Tighten bolts on intake manifold in stages and in diagonal sequence. 10nm
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Old Feb 20, 2025 | 01:26 PM
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Be VERY careful torquing them up as they’re very soft magnesium alloy bolts that break very easily. Ask me how I know….
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Old Feb 20, 2025 | 01:33 PM
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I also ended up dabbing a bit of threadlock (not super strong variant) on them in my case as they tend to back out over time causing leaks, and I reused my old bolts.
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Old Feb 20, 2025 | 11:10 PM
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Originally Posted by dvs_dave
Be VERY careful torquing them up as they’re very soft magnesium alloy bolts that break very easily. Ask me how I know….
well, I’m hoping that following the procedure with fresh bolts will prevent that

Originally Posted by AEightSilver
Its in the Motronic Injection and Ignition system manual.

- Tighten bolts on intake manifold in stages and in diagonal sequence. 10nm
super helpful, found it, did not realize they have more than one manual for the engine. The instructions are vague, the instructions on the 32v 4.2 manual seems to be more explicit.

I am also looking for the bolt torquing order of the valley pan gasket below, would you know where I might find that?
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Old Feb 21, 2025 | 05:49 AM
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Section 17 of the 8-cyl engine mechanics (BFM, BFL, BGK). No order listed. 10nm.
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Old Feb 21, 2025 | 10:36 AM
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Got it, I'll use my best judgement
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