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Old 08-27-2011, 07:47 AM   #120
PercyJWellingtonIII
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Quote:
Originally Posted by KMPrenger View Post
Holy cow...I wasn't expecting a plastic intake manifold...no wonder they were able to lose weight! Should also cost less....shouldn't it??

Yeah, many of us V6 owners like to run without the engine cover, but with this...there is no way I'd run without it. Ughh....

But...if it was an easy way for more power I'd do it! Just pretty up my engine cover!

Outside is plastic but the inside is composite, so composite cost more and probably balances out in cost.
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Old 08-27-2011, 09:28 AM   #121
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lets hope so. The plastic manifolds on GM's 3.4 V6 were famous for leaking and cracking. (or just exploding ) and usually after warranty too.

http://www.autoblog.com/2006/04/15/g...se-by-case-ba/
Um, those were gaskets leaking coolant, not the manifolds. The 3.4 V6 had an aluminum intake manifold with a composite gasket.
Also, there is no coolant flowing through our V6 intake, it won't be an issue for the LFX.
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Old 08-27-2011, 04:24 PM   #122
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Um, those were gaskets leaking coolant, not the manifolds. The 3.4 V6 had an aluminum intake manifold with a composite gasket.
Also, there is no coolant flowing through our V6 intake, it won't be an issue for the LFX.
um..no, not all. My parents had a Monte Carlo with a composite manifold, and the upper material of the MANIFOLD itself degraded, and started leaking. Was not limited to the 3.4 either. My 2.2 I4 needed a new manifold too.

http://bernardsblog.blogspot.com/200...te-intake.html
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Old 08-27-2011, 05:04 PM   #123
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Originally Posted by esperman View Post
um..no, not all. My parents had a Monte Carlo with a composite manifold, and the upper material of the MANIFOLD itself degraded, and started leaking. Was not limited to the 3.4 either. My 2.2 I4 needed a new manifold too.

http://bernardsblog.blogspot.com/200...te-intake.html
OK, that's a different link, to a different engine (3800), with a different condition. As that link states, there is an EGR passage within the intake, the lower intake had a steel fitting that passed through the upper composite intake, on the early models, they found there was insufficient clearance between the two, that was later corrected by using a smaller diameter fitting on the lower intake.

Rest assured, the 3.6 engine has no EGR and no coolant circulated though it's intake.
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Old 08-28-2011, 01:37 AM   #124
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Quote:
Originally Posted by esperman View Post
um..no, not all. My parents had a Monte Carlo with a composite manifold, and the upper material of the MANIFOLD itself degraded, and started leaking. Was not limited to the 3.4 either. My 2.2 I4 needed a new manifold too.

http://bernardsblog.blogspot.com/200...te-intake.html
First off, the article clearly states that the gasket, not the intake manifold itself was the issue. The 3.4 L32 and Buick 3.8 3800 were two completely different engines. The 3.4 did not have a composite intake manifold. If you'd even seen a 3.4 under a hood you would have easily seen this. The later 3800 engines did however switch from aluminum to composite intake manifolds.

Second, their isn't a single mention of the composite degrading in that second article. A hole wore into the side of the intake because a fitting was too large. There's a difference between the degradation of the composite material, and the vibration piece of metal wearing a hole in the side of it.
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Old 09-01-2011, 03:38 PM   #125
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i just took delivery of my 2012 1ls camaro yesterday, i love it all but would have preferred the old wheel and gauges! way i see it is even though i lost those i gained a spoiler cool taillights and all the blue tooth and hands free stuff without having to pay extra. ill be in heaven with a backup camera kit from ofer and an mrt 2.0 exhaust
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Old 09-06-2011, 08:48 AM   #126
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Is the '12 LFX in the Camaro E85? Has anyone checked for sure that it has a yellow E85 gas cap?
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Old 09-06-2011, 10:19 AM   #127
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Smile

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Originally Posted by Russell James View Post
Is the '12 LFX in the Camaro E85? Has anyone checked for sure that it has a yellow E85 gas cap?
I haven't yet because I'm still on my first tank of gas lol! I'll check the cap n litriture and let you know
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Old 09-07-2011, 10:31 PM   #128
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Well no yellow gas cap on mine, I'll read through the owners info and see if I can't dig up some info on e85 compatibility
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Old 09-07-2011, 10:47 PM   #129
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I'll stick with my 2010 thank you very much.

Well maybe an upgrade to an SS but wouldn't trade it for the 2012 V6 not even for an extra 11 horses
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Old 09-13-2011, 01:39 AM   #130
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Hey new 2012 LFX owners - can we get some updates!? Excited to hear about how this thing performs, and sounds, and your overall impressions. Can someone snap a video with decent audio of the exhaust?

EDIT: Found this:


(still want to hear whatever's new with your cars)
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Old 09-13-2011, 02:09 AM   #131
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Hey new 2012 LFX owners - can we get some updates!? Excited to hear about how this thing performs, and sounds, and your overall impressions. Can someone snap a video with decent audio of the exhaust?

EDIT: Found this:


(still want to hear whatever's new with your cars)
I love my 2012 LFX! Im just over 500 miles so I'm still breaking it in lol! The car handles great and has plenty of power to get going. The exhaust note Is a little tame from the drivers seat ( for my taste ) but thats nothing an mrt 2.0 won't fix! Once I get it over a thousand miles I'll run it out and give you an update. She needs a wash now so after that I will film an exhaust clip and post a link here for you. As far as the new stuff goes, it's nice not to have paid extra for the hands free controls and bluetooh stuff one less mod to do! I just think gm should have included the pdim to complete the package. Also having cruise control with my 6 speed is nice
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Old 09-18-2011, 02:39 AM   #132
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Ven, is the passenger's seat 6-way adjustable? Like, can you manually increase the height like the driver's seat?

Also, did you ever drive the LLT? I can't remember if it was you that said they had actually test drove both at some point. Just looking for a comparison between the feel of the cars. I don't really expect much, though one guy did say he felt the LFX seemed smoother at high RPM's.
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Old 09-19-2011, 10:07 AM   #133
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Are there any experiences about the LFX engine? Any problems yet?

I am a little bit concerned about the integrated exhaust manifold! I know just enough about engines that I think there might be a problem with those manifolds. I guess there could be a lot of stress to the engine head because of temp and pressure peaks at higher prolonged rpm's?!?

Last edited by SpeeedyJoe; 09-19-2011 at 02:38 PM.
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Old 09-19-2011, 11:00 AM   #134
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Originally Posted by SpeeedyJoe View Post
Are there any experiences about the LFX engine? Any problems yet?

I am alittle bit concerned about the integrated exhaust manifold! I know just enough about engines that I think there might be a problem with those manifolds. I guess there could be a lot of stress to the engine head because of temp and pressure peaks at higher prolonged rpm's?!?
I highly doubt there will be an issue. The validation testing they do on engines is pretty severe, should be well sorted out before hitting the public. Other manufacturers have used a similar approach with success.
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Old 09-19-2011, 06:17 PM   #135
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Ven, is the passenger's seat 6-way adjustable? Like, can you manually increase the height like the driver's seat?

Also, did you ever drive the LLT? I can't remember if it was you that said they had actually test drove both at some point. Just looking for a comparison between the feel of the cars. I don't really expect much, though one guy did say he felt the LFX seemed smoother at high RPM's.
The passenger power contr Only adjusts the seat back postion, since I'm never on that side I really hadn't noticed lol! I test drove the llt and don't think I had enough time with it to make an accurate comparison, I will say that I haven't had an issue with shifting from 1st to 2nd like most have. This v6 does outshine any previous v6 that I have owned, however I feel that it feels lacking in torque a bit. Hopefully a few mods can push me into the seat a little better but for now I've already started prepping for my first cosmetic mods, hopefully by January I can have an intake and exhaust in.
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Old 09-21-2011, 08:31 PM   #136
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Bought a 1LT w/RS package. Power seats both sides...look on the back left spoke of the steering wheel and found the work CRUZE LS...lol. Engine smooth and noticible power increase. Exhaust much quieter at idle than 11 V6. I know..had both. Fuel efficiency slightly down from the 11...at least on mine and I believe it is the wider tires of the RS package vs the plain 1LS.
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