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Old 10-18-2009, 02:31 PM   #1
ken33
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Post Engine life of the 2.4 vs 3.5

anybody know what the engine life is on the 4 cyl in the new malibu vs the 3.5 engine in the newer impalas.....I was just waundering if the 4 cycl holds up as well as the the 3.5 6 cycls.....and how many miles you can get out of each one doing the proper oil changes....thanks

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Old 11-07-2009, 07:51 AM   #2
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Default Re: Engine life of the 2.4 vs 3.5

Well does anyone have an opinion?????
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Old 11-07-2009, 08:08 AM   #3
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Default Re: Engine life of the 2.4 vs 3.5

The ecotec is a very solid engine. If it can have 1000+hp on the stock block, I'd say it'll hold it's own. Having owned a 3.4, and knowing that the 3.5 is very similar, I'd opt for the ecotec. The 3.4/3.5's aren't bad engines per se, but the 3.4's are notorious for having LIM gaskets leak, and it's almost guaranteed that the 3.5 will have problems as well.

With regular oil changes (and gasket replacements on the 3.5), both engines should last well over 100-200k. I would give the ecotec the advantage though.
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Old 11-07-2009, 08:16 AM   #4
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Default Re: Engine life of the 2.4 vs 3.5

honestly the 4 cyl should last longer * flame suit on* given care and maintenance is done properly to both. some may say the bigger engine has less work to do, while this is true the 2.4 is a European engine, its designed to sustain high RPM and rapid ( as rapid as a 4 cyl can) starts. along with forged connecting rods and pistons from the factory. ( im not sure about the crankshaft though)
my vote is 4 the 4cyl
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Old 11-07-2009, 08:27 AM   #5
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Default Re: Engine life of the 2.4 vs 3.5

I think any opinions would be purely subjective. Unless one of these engines has a inherent design flaw or weakness, I don't think anyone could conclude that one will always outlast the other. No engines are designed to have the block crack in half, and spill its innards at some predetermined number of miles, or number of months in the future. Longevity obviously takes time to determine, however some engines have shown a determined interest to expire early, like the Oldsmobile converted Diesel V-8.
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Old 11-07-2009, 09:47 AM   #6
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Default Re: Engine life of the 2.4 vs 3.5

Quote:
Originally Posted by Macleod52 View Post
The ecotec is a very solid engine. If it can have 1000+hp on the stock block, I'd say it'll hold it's own. Having owned a 3.4, and knowing that the 3.5 is very similar, I'd opt for the ecotec. The 3.4/3.5's aren't bad engines per se, but the 3.4's are notorious for having LIM gaskets leak, and it's almost guaranteed that the 3.5 will have problems as well.

With regular oil changes (and gasket replacements on the 3.5), both engines should last well over 100-200k. I would give the ecotec the advantage though.
As is stated ANY engine will outlast the car with regular maint and upkeep regardless if it's a 4,6,8 or 10 cylinder
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Old 11-07-2009, 10:49 AM   #7
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Cool Re: Engine life of the 2.4 vs 3.5

I agree with previous statement above this 100%

The 2.4 is about the best 4cly on the planet. Yes, it's better than most import 4cly. Cheaper,quieter,smoother,more power for the money,better mileage. Honestly I think typical crappy American driving skills and maintenance patterns this engine will do 200,000 with nothing done other than minimal oil changes! I am judging it by early owned 2.2ltr 2.8ltr gm 4cly that would not die with over 200,000 nasty miles.
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Old 11-11-2009, 08:40 AM   #8
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Default Re: Engine life of the 2.4 vs 3.5

Both engines are 200K-300K engines with regular fluid changes. My personal thought is the 2.4 Ecotec is a much better built engine and has a higher lifespan potential, but realistically they could each do 200K+ with not much effort. The rest of the vehicle is cause for concern...
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Old 11-12-2009, 11:52 AM   #9
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Default Re: Engine life of the 2.4 vs 3.5

I can agree with many of the comments here.. I had many problems with the 3.4 and the leaky intake gaskets over all good motor but for that case.. I also had the GM quad 4 motor and it was a beast.. I ran that thing to 230K and except for changing a water pump that motor was running strong as the day i got it with 30K.. So I am all in favor of GM 4 bangers.. they have always served me well
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Old 11-15-2009, 02:49 PM   #10
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Default Re: Engine life of the 2.4 vs 3.5

Hey preachr......Yea i know alot of gm engines had leaking intake and timing covers due to the anti-freeze used in gm engines...Dex-cool...Everybody i talk to said to get it out as fast as you can and put the green back in it...the dex-cool would eat up the gaskets..I had my silverado flushed out good and put prestone green back in it to make sure..
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