Inlet manifold material ? - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 02-22-2017
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Inlet manifold material ?

Yes, simple question .... what is it made from? It does look to be plastic? I need to know because I have to drill and tap it to accept injectors for liquid propane. Training videos for Lsi conversion always seem to show that the inlet manifold is usually metal? So I'm slightly concerned that the injectors won't be quite so robustly mounted in a plastic manifold? Oh, for some reason there seems to be plenty of them on "Ebay", from as little as Ł20, sent! That way I can do the work first without having to have my car off the road .....

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#2 Old 02-22-2017
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Interesting question. Don't know the answer for your unit (and this won't help you) but found this on wiki:
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The intake manifold has historically been manufactured from aluminum or cast iron, but use of composite plastic materials is gaining popularity (e.g. most Chrysler 4-cylinders, Ford Zetec 2.0, Duratec 2.0 and 2.3, and GM's Ecotec series).
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#3 Old 02-22-2017
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Originally Posted by DAJ 190 View Post
Yes, simple question .... what is it made from? It does look to be plastic? I need to know because I have to drill and tap it to accept injectors for liquid propane. Training videos for Lsi conversion always seem to show that the inlet manifold is usually metal? So I'm slightly concerned that the injectors won't be quite so robustly mounted in a plastic manifold? Oh, for some reason there seems to be plenty of them on "Ebay", from as little as Ł20, sent! That way I can do the work first without having to have my car off the road .....

David
If you mean the intake manifold, then plastic. If you mean the elbow before the throttle body, then the pre-FL is metal, and the post-FL if plastic. And no luck on the quarter windows yet. Got too busy yesterday
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#4 Old 02-22-2017
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Just thinking, as it is UK market it might be worth asking @Zenman 63 as sometimes there are local market differences.


That'll get his attention.

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