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Entry Level Luxury Performance Sedans

11073 messages,  Last post on Jul 16, 2009 at 1:47 PM

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What is this discussion about? BMW 3 Series, Infiniti G35, Acura TL, Lexus IS 350, Mercedes-Benz C-Class, Cadillac CTS, Lexus IS 250, Audi A4, Acura TSX, Car Comparisons, Sedan

#10973 of 11073 Re: Another vote for less weight on the sedan [louiswei] by sjaieve Apr 17, 2008 (7:58 am)
Replying to: louiswei (Apr 17, 2008 7:26 am) I prefer 300+ horses with a nice price tag and a respectable 0-60 & 1/4 mile. All I need to know about the engine copmonents is there are reliable, nothing more
#10974 of 11073 Re: Another vote for less weight on the sedan [tayl0rd] by plekto Apr 17, 2008 (3:44 pm)
Replying to: tayl0rd (Apr 17, 2008 4:54 am) I meant more parts in the connecting rods. I see it as having pultiple connecting rods since it has more than one part between the piston and the crankshaft.   *** from wiki on 60 degree engines*** However, more modern designs often use a 3-throw crankshaft with what are termed flying arms between the crankpins, which not only give the required 120° separation but also can be used for balancing purposes. Combined with a pair of heavy counterweights on the crankshaft ends, these can eliminate all but a modest secondary imbalance which can easily be damped out by the engine mounts *** So you don't have piston. rod. crankshaft. like in an inline engine. You have a bunch of intermediary parts kludged together to keep it from shaking itself apart.   GM's 90 degree designs are even more complex and run even rougher, being designed off of V8 engines. Actually quite nasty, really. They tend to eat through engine mounts fairly regularly.   The reason you don't see many I6s is because they usually won't fit in a FWD car due to there needing to be space for the CV joints and transmission as well. Thankfully it is making a comeback as makers are slowly realizing what a giant turd FWD technology is, especially in vehicles with over 200HP. Replies to this message: shipo (Apr 17, 2008 8:13 pm) laurasdada (Apr 18, 2008 10:31 am) circlew (Apr 18, 2008 12:12 pm) and 2 more...
#10975 of 11073 Re: Another vote for less weight on the sedan [alltorque] by cdnpinhead Apr 17, 2008 (5:10 pm)
Replying to: alltorque (Apr 17, 2008 6:18 am) ". . .plus valve radio."   I also remember tube (valve) radios in cars -- they took awhile to warm up and really could run down the battery if left on while the engine (with its generator) was shut down. Lots of things have improved tremendously in automobiles over the past 50 years, but many of them add weight.   My '65 MGB was lots of fun to drive & own, with the knock-offs, wire wheels, the tightest steering I've ever had and shifter feel that was unequalled. Safe? Not really. Powerful? No. Radio quality? Awful. Still, a wonderful car.
#10977 of 11073 Re: Another vote for less weight on the sedan [plekto] by shipo Apr 17, 2008 (8:13 pm)
Replying to: plekto (Apr 17, 2008 3:44 pm) Ummm, I'm thinking that you've grossly misinterpreted what you quoted from Wikipedia. True, most V6 engines use a three throw crank with some form of an offset between paired connecting rods to achieve an even 120 degree firing interval, however, even the 60 degree engines that use flying arms (an arm that reaches between connecting rods and extends from the throw back through the axis of the crank and some distance beyond) have no more complicated connecting rod assemblies than an inline engine. FWIW, flying arms are cast into the crank itself, they don't move independently and other than a little machining to remove a small amount of metal in the balancing process, require no extra work during engine assembly.   Actually, when looked at from a part count perspective, V6 crank shaft, crank bearing, and connecting rod assemblies (bearings included) are actually simpler than an I6. Why is that? Simple, your typical V6 only uses four main bearings with a single 2-cylinder offset throw in between each main pair, however, your typical I6 uses seven main bearings with each cylinder having its own throw situated between main pairs. In spite of this difference, I6 engines usually have a considerably lower parts count compared to a V6 of an otherwise similar design.   Best Regards, Shipo Replies to this message: laurasdada (Apr 18, 2008 10:31 am) circlew (Apr 18, 2008 12:12 pm) laurasdada (Apr 18, 2008 12:44 pm) and 1 more...
#10978 of 11073 Re: Another vote for less weight on the sedan [shipo] by laurasdada Apr 18, 2008 (10:31 am)
Replying to: shipo (Apr 17, 2008 8:13 pm) Ok, Mr. shipo-smarty-pants. Now that you've explained that, can you please explain how the Pats lost the Super Bowl???   Sorry, still having flashbacks...     Replies to this message: circlew (Apr 18, 2008 12:12 pm) laurasdada (Apr 18, 2008 12:44 pm) circlew (Apr 18, 2008 4:05 pm)
#10979 of 11073 Re: ES300 vs. Acura TL [fredvh] by smacd Apr 18, 2008 (11:04 am)
Replying to: fredvh (Mar 24, 2002 11:06 pm) I bought new an 03 CL Type S (last year for the coupe) and it has been an awesome car. Only normal maintenance and I am at 96K miles. Excellent product, I am going to get the the 09 TSX too.
#10980 of 11073 Re: Another vote for less weight on the sedan [laurasdada] by circlew Apr 18, 2008 (12:12 pm)
Replying to: laurasdada (Apr 18, 2008 10:31 am) Giants were more connected to the desire to win...simple as that! More efficient parts in the GIANT Engine than NEP motor!   GIANTS = BMW NEP = GM   Regards, OW Replies to this message: laurasdada (Apr 18, 2008 12:44 pm) circlew (Apr 18, 2008 4:05 pm)
#10981 of 11073 OUCH! by laurasdada Apr 18, 2008 (12:44 pm)
Replying to: circlew (Apr 18, 2008 12:12 pm) "NEP = GM "   Now, that was uncalled for, OW! Low blow! 15 yard penalty and loss of down! Replies to this message: circlew (Apr 18, 2008 4:05 pm)
#10982 of 11073 Re: OUCH! [laurasdada] by circlew Apr 18, 2008 (4:05 pm)
Replying to: laurasdada (Apr 18, 2008 12:44 pm) Sorry, the last time I got to vent as a Giants fan...   I apologize!   Regards, OW

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