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+--- Thread: i5 vs i6 (/showthread.php?tid=1762)
i5 vs i6 - larsalan - 09-23-2010
http://en.wikipedia.org/wiki/Straight-5
http://en.wikipedia.org/wiki/Straight-six_engine
so wikipedia seems to favor the i5 design (imo)
More power in a i6?
i5 has better balance improvements per weight and size vs a i4?
negligible differences?
what do you gear heads think?
I am looking at all the models of benz and there motors so I will be ready to collect the best diesels in the coming decades.
RE: i5 vs i6 - garage - 09-24-2010
(09-23-2010, 09:16 PM)larsalan http://en.wikipedia.org/wiki/Straight-5
http://en.wikipedia.org/wiki/Straight-six_engine
so wikipedia seems to favor the i5 design (imo)
More power in a i6?
i5 has better balance improvements per weight and size vs a i4?
negligible differences?
what do you gear heads think?
I am looking at all the models of benz and there motors so I will be ready to collect the best diesels in the coming decades.
What is your idea of "best" diesels?
RE: i5 vs i6 - ForcedInduction - 09-24-2010
I6 is much better. I5 engines, like the I4, are naturally unbalanced.
If you look at the firing order (1-2-4-5-3) the engine wants to rock back-n-forth unevenly, where an I6 (1-5-3-4-2-6) is naturally balanced.
MB chose to build the I-5 because they could use the existing OM615/616 design and still fit in the same area as the I6 g@ssers. If they wanted an I6 diesel they would have to design a new smaller engine, which they eventually did in 1986.
RE: i5 vs i6 - larsalan - 09-24-2010
What is your idea of "best" diesels?
[/quote]
Oh I just got my first one, a w123, and I love MB style. I'm thinking about the day when there aren't so many of those left to be had. So, I was looking at lists of mercedes' oil motors.
The motor are not all as popular. I would think the next model I would want would have more valves per cylinder. The e300 turbo from 98-99 looks awesome but, why only 2 production years? Or maybe just forget benz and look at TDI(s).
I'm not sure about the # of cylinders or SOHC vs DOHC.
Forced has set me straight about the # of cylinders.
Maybe the V is even better.
RE: i5 vs i6 - ForcedInduction - 09-24-2010
(09-24-2010, 07:09 AM)larsalan Maybe the V is even better.
The V6 is a throwaway engine.
RE: i5 vs i6 - larsalan - 09-24-2010
(09-24-2010, 09:36 AM)ForcedInduction The V6 is a throwaway engine.
The benz diesel v6 is or the v6 formation in general?
RE: i5 vs i6 - winmutt - 09-24-2010
There is no need for a v6 diesel really unless your doing some more towing. Inline allows higher reving where V adds more engine brake (and torque). More cylinders is always better.
RE: i5 vs i6 - larsalan - 09-24-2010
So can we agree that the i6 is the best overall configuration of the motors in the MB line?
http://en.wikipedia.org/wiki/List_of_Mercedes-Benz_engines
RE: i5 vs i6 - winmutt - 09-24-2010
No way. V12 bi turbo baby!
RE: i5 vs i6 - ForcedInduction - 09-24-2010
Ditto. The SL65 AMG is the best thing ever to come out of MB's dealerships.
RE: i5 vs i6 - larsalan - 09-24-2010
Nice, however I require room for 2 dogs and 30~ mpg.
and I was trying to talk about diesel motor, right?
RE: i5 vs i6 - willbhere4u - 09-24-2010
6cyl diesel is the way to go! The 86-87 300sdl with the om603 is a sweetheart of an engine it's fast and comfortable and can get 30mpg on the highway!
RE: i5 vs i6 - ForcedInduction - 09-25-2010
If you don't want the land-ship 300SDL you could get an 87 300TD.
RE: i5 vs i6 - willbhere4u - 09-25-2010
Agreed the w124 is a much faster car! The 300sdl is a land yacht but it's comfortable!
RE: i5 vs i6 - winmutt - 09-25-2010
I find the 87 300d to be quite ok on size. Not so great with adults in the back but that is a rariety.