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So i was at the hair cut place the other day, and i was reading a car magazine. BMW's got a 3.0l inline 6 that redlines at 7000 RPM's, and it makes horseies up in the mid 200's range. I couldn't beleive the redline though. my 300 sounds like its gonna blow up at 5000.
Well, your engine is made to haul heavy stuff, BMW's engine is made to haul ***, there is a fine line type of difference. Plus, those engines need to compete with other cars on the autobahn. I dont think BMW has ever made a V6, even the M3 is a straight 6. How often do you rev ur 300 up to 5 grand? Or was that a 1 time deal?
BMW's I-6 and Ford's I-6 are both gas-powered straight sixes, and that's where the similarity ends. They have about as much in common as my ex-wife and I do.
BMW makes the smoothest, most powerful, most fun to drive straight sixes on the planet. Everyone else who wants a piece of the 3-series market they have carved out for themselves tries to imitate them, including Lexus.
If BMW ever made a V-6, I've never heard of it nor seen it.
The Inline 6 platform can be used for hi performance. Toyota Supras w/ 1200 bhp 3 Liter Inline 6s have become rather popular in the import market. The power comes from monster twin turbos pushing almost 30 psi of boost. Imagine how strong that motor has to be to hold that much boost. The real crazy part is some of these are daily drivers.
Several factors differentiate the Big Six from the Beemer Six
1.) Heads - Compared to those Beemer six heads, those on our sixes flow like an asthmatic person who's missing a Lung.
2.) Camshaft - The camshaft also limits the revs, since it gives the engine all the low-end torque in the world, but doesn't hold it into the higher RPM range
3.) Crankshaft & Components - The 300's crank is HUGE!! Plus it's pushing a set of pistons and rods that are signifigantly heavier than those in that BMW engine. All that extra rotating mass means that you can't rev this engine that high or it will probably go BOOM!!
Our engines are made to pull the world around. Plain and simple.
It's also the long stroke of our engine that make it not so rev happy. The BMW and the like uses a shorter stroke with heavy duty light weight components so they can spin faster.