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General Automotive General automotive discussion. This is intended to be a discussion about other not VW and Diesel cars you may have or interested in.

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Old January 22nd, 2011, 07:42   #1
aja8888
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Default Some new trivia....

Chrysler Group's new 3.6L V6 engine has how many exhaust manifolds?

OK, car nuts, go for it! ( I know its no VW related, but it's a change)
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Old January 22nd, 2011, 08:36   #2
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None.
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Old January 22nd, 2011, 08:42   #3
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They went to headers eh?
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Old January 22nd, 2011, 10:18   #4
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Quote:
Originally Posted by aja8888 View Post
( I know its no VW related, but it's a change)
actually it is, that engine will find its way into the 2011 Volkswagen Routan
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None.
correct.
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They went to headers eh?
nope, the exhaust manifolds are actually integrated into the cylinder head.
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Old January 22nd, 2011, 10:46   #5
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Any links to show this strange beast?

Someone got design hints from the old ford flathead v8???
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Old January 22nd, 2011, 12:59   #6
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You guys are all too good! Yes, they integrated the manifold into the head. I don't have a link though. This was the trivia question in the latest Rock Auto newsletter.
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Old January 22nd, 2011, 13:00   #7
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http://www.allpar.com/mopar/phoenix-engines.html

The cylinder head is a bit wider than normal to allow for the internal "manifold" and each side ends in a single flange that the rest of the exhaust connects to.
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Old January 22nd, 2011, 14:18   #8
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isn't that going to be a cooling nightmare?
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Old January 23rd, 2011, 17:37   #9
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Yeah, I don't get this design, on a couple of different levels. Surely the aluminum exhaust passages are going to increase the load on the cooling system. Great in winter for getting faster engine warm up and heat to the cabin ... not good in summer with the engine running under heavy load.

Doing that would also be expected to cool off the exhaust gases more. Not good for catalyst light-up.

It also means the exhaust can't be tuned - at all. Mazda is using long-tube headers on their upcoming Sky-G Activ gasoline engine specifically so that the exhaust pulses help scavenge the cylinder out. I know a good many modern cars are having the catalyst close-coupled to the engine, which precludes exhaust tuning anyway, so there are a few different ways around this.
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Old January 25th, 2011, 09:52   #10
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Hehe... MrMopar, it does not appear to me that you have ever spent a summer in Phoenix.
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Old January 25th, 2011, 09:55   #11
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Honda has been doing this for several years now...
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Old January 25th, 2011, 14:14   #12
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True; the R18A (current Civic) is like that.
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