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Wagons Subaru Crew Subaru Forester 2009 Subaru Forester
3630 messages, Last post on Nov 06, 2009 at 12:19 PM
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Replying to: ateixeira (Jul 01, 2009 9:46 am) The '10 OB CVT is rated 29 MPG on the highway. Legacy CVT is 31. |
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Replying to: saedave (Jul 02, 2009 5:48 am) Bob
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Replying to: rsholland (Jul 02, 2009 8:29 am) Or cheap. The cost of re-certifying a low volume product with the CVT could have been too much....and if fuel economy rules are tightened much more the 3.6 liter engine with either transmission may become history.
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Replying to: saedave (Jul 02, 2009 1:17 pm) That should improve fuel economy and low end power for all their engines.  They also should get rid of the series coolant flow of the H-4 engines and use the parallel flow scheme the H-6 gained when adapted for the Tribeca. That change in cooling was one reason the H-6 became able to use regular grade gasoline. ....and yeah, they'll have to redesign the H-4 engine block for that, which is a big expense. 
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Replying to: kurtamaxxxguy (Jul 02, 2009 9:00 pm) ....and yeah, they'll have to redesign the H-4 engine block for that, which is a big expense I know they bored and stroked the 3.0 block and employed the odd assembly procedure for pistons and rods, but was not aware of new coolant passages other than in the head which they discussed publically. Are you sure the block got that change? Even with direct injection and CVT the fleet average fuel consumption might still be too high to keep the six unless they successfully introduce a small high mpg model. Perhaps the Toybaru roadster would help. 
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Replying to: saedave (Jul 03, 2009 10:00 am) However, I don't remember whether the block and head, or just the head, were changed to allow parallel coolant flow. The XT's turbo engine still uses series cooling, and one cylinder (#3 or #4, I forget which) runs hotter than others and has the knock sensor for that reason.
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Replying to: kurtamaxxxguy (Jul 03, 2009 11:04 am) While I personally chose the 3.0 over the turbo in 2005 because of excessive turbo lag, with a rumored 8.0 sec 0-60 for the CVT 4 I would choose the normally aspirated four today. That 8 second rumor may be incorrect, however. |
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The '09 Forester got a different turbo, intercooler, head and intake manifold that reduced turbo lag and brought usable torque down by around 800 RPM. As far as I know the '10 Forester has the same system. Some testers comment the '09 Forester power delivery seems patchy. Local speed shops in Portland ran dyno tests and claimed the '09's tested frequently went into detonation detection mode and reduced power. The explaination was Subaru engines were originally designed for 98 Octane gas, and through detuning have encountered some problems. A "rechipping" supposedly fixes the problem, but will void the engine warranty. The '09 WRX got a larger turbo, new catalyst and exhaust system that improved horsepower, but moved the torque peak farther up the curve so the WRX now has the "turbo rush" either loved or hated by enthusiasts. The '10 Legacy got a revised turbo system that further reduced turbo lag, mostly by moving the turbo closer to the exhaust manfold and shortening some of the duct work.
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Replying to: kurtamaxxxguy (Jul 03, 2009 11:57 am) But the Outback lost the turbo option in favor of the 3.6l. Perhaps just one too many models to certify? Or is there some other good reason? With the low mounted turbo already in use on the Legacy, the turbo diesel might actually be introduced here. It certainly would help CAFE.
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Replying to: saedave (Jul 03, 2009 12:22 pm) Also, perhaps Subaru did not sell all that many Outback XT's to warrant keeping that version alive? They did cancel the Manual transmission Forester XT because no one was buying it (immediately raising howls from the auto journalists). |
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