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Been searching but couldn't find - Difference in plenums?

 
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RealJoker
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2001 Chevrolet Impala
1965 Chevrolet Impala


PostPosted: Mon May 14, 2012 3:43 am    Post subject:  Been searching but couldn't find - Difference in plenums? Reply with quote

My daily driver needs the upper plenum replaced. I do have another parts car than I'm about to strip and trash. Is there any way to tell if it's had the plenum replaced? It doesn't have any dealer TSB stickers, but it has almost 250k miles on it so they could have been lost over time. From what I've heard I doubt this one would have gone this far without the work, but you never know. LoL
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outonthetiles
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2000 Chevrolet Impala
1990 Volvo 240
2000 Buick Regal


PostPosted: Mon May 14, 2012 6:03 am    Post subject:   Reply with quote

I'm assuming this is for a 3.8? If not, please disregard this post.

Honestly, that's not a part I would really re-use. After time they get brittle, and the inside can blow out, causing coolant to fill your cylinders, which can cause major damage to your engine rather quickly. I would recommend the kit from rockauto (I think its made by dorman). It comes with a new upper plenum, new injector o-rings, new reduced diameter egr stovepipe, and throttle body and plenum gasket. While you have the engine that far apart, I would recommend replacing your lower intake manifold gaskets as well. The stock ones are made from plastic and are known to fail over time. Most would recommend replacing with the newer style aluminum gaskets, which are far less prone to failure.

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2000 Impala LS: Getrag 284 Swapped
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RealJoker
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2001 Chevrolet Impala
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PostPosted: Mon May 14, 2012 6:12 pm    Post subject:   Reply with quote

That's kinda what I'm wondering about is if this one might already have the Dorman replacement. Is there a way to tell them apart?

I'm having some serious financial issues right now and my options are this or not driving. With the weather warming up I don't want to chance nursing it anymore.
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outonthetiles
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2000 Chevrolet Impala
1990 Volvo 240
2000 Buick Regal


PostPosted: Mon May 14, 2012 6:25 pm    Post subject:   Reply with quote

Why not pull it apart and see how brittle it is in the EGR stovepipe area?

I have a dorman UIM and a factory UIM in my garage, I'll see if I can find any differences for ya, but it won't be until tomorrow.

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PostPosted: Mon May 14, 2012 7:39 pm    Post subject:   Reply with quote

That would be great! Thanks!
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PostPosted: Tue May 22, 2012 10:06 pm    Post subject:   Reply with quote

I pulled the one off the other car. To be honest it hardly looks used on the underside.
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outonthetiles
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2000 Buick Regal


PostPosted: Wed May 23, 2012 11:21 am    Post subject:   Reply with quote

Sorry, I've had so much going on, I forgot to check it out. Good luck with with the one you pulled!

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