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2009 Subaru Forester

3656 messages,  Last post on Nov 26, 2009 at 11:01 AM

You are in the Subaru Forester Forum. Your Host is kcram

What is this discussion about? Subaru Forester, Future Vehicle, Wagon


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#3406 of 3656
CVT belt drive by kurtamaxxxguy
Jul 01, 2009 (4:18 pm)
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Replying to: saedave (Jul 01, 2009 12:29 pm)

Does anyone know who actually builds the CVT belt assembly? It would be no surprise if it is JATCO with parts shared by Nissan and Toyota.
 
Several articles said the Subaru CVT's chain is licensed and sourced from the same company building Audi's CVT's (it does not use a belt - the chain has much greater strength and wear resistance). The rest of the CVT is built by Subaru.
 
The 5-speed auto is probably the same one Subaru has used in the past with a few updates. I've read it's sourced from Nissan and is in limited supply.
#3407 of 3656
subaru reliability by kurtamaxxxguy
Jul 01, 2009 (7:22 pm)
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Those wanting to report their Forester's reliability, especially those with XT's, might want to visit the truedelta.com website and give them your service history.
They ask very few "personal" questions.
 
I don't work for them, BTW.
#3408 of 3656
Re: CVT belt drive [kurtamaxxxguy] by saedave
Jul 02, 2009 (5:48 am)
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Replying to: kurtamaxxxguy (Jul 01, 2009 4:18 pm)

The 5-speed auto is probably the same one Subaru has used in the past with a few updates. I've read it's sourced from Nissan and is in limited supply
 
Subaru has previously stated that it is a JATCO 4 speed modified by Subaru to five speeds. I believe the modification process is the bottleneck.
 
If the CVT chain and pulleys are common with Audi why the seemingly low torque capacity? Or is there a fore-and-aft dimension increase that is incompatible with the six cylinder in the chassis?
#3409 of 3656
Re: fuel cost comparison [ateixeira] by samiam_68
Jul 02, 2009 (7:20 am)
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Replying to: ateixeira (Jul 01, 2009 9:46 am)

The CVT Outback 2.5i is rated at 31mpg highway
 
The '10 OB CVT is rated 29 MPG on the highway. Legacy CVT is 31.
#3410 of 3656
Re: CVT belt drive [saedave] by rsholland
Jul 02, 2009 (8:29 am)
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Replying to: saedave (Jul 02, 2009 5:48 am)

If you're asking why the H6 doesn't have the CVT, I suspect it has to do with Subaru wanting to prove the CVT in real-life conditions with a less powerful powerplant. I fully expect the H6 will get the CVT in a year or so. Keep in mind that Subaru is a very conservative company. They're just playing it safe.
 
Bob
#3411 of 3656
Re: CVT belt drive [rsholland] by saedave
Jul 02, 2009 (1:17 pm)
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Replying to: rsholland (Jul 02, 2009 8:29 am)

They're just playing it safe
 
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.
#3412 of 3656
Re: CVT belt drive [saedave] by kurtamaxxxguy
Jul 02, 2009 (9:00 pm)
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Replying to: saedave (Jul 02, 2009 1:17 pm)

Subaru still has not utilized Direct Injection.
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.
#3413 of 3656
Re: CVT belt drive [kurtamaxxxguy] by saedave
Jul 03, 2009 (10:00 am)
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Replying to: kurtamaxxxguy (Jul 02, 2009 9:00 pm)

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

 
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.
#3414 of 3656
Re: CVT belt drive [saedave] by kurtamaxxxguy
Jul 03, 2009 (11:04 am)
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Replying to: saedave (Jul 03, 2009 10:00 am)

I remember seeing an extensive presentation where the H-6 cooling revisions were discussed. The older 3.0 used series cooling so that the cylinders at the end of the circuit ran hotter, encouraging detonation and was one reason Premium fuel was needed. Parallel cooling used in the 3.6 got rid of that problem.
 
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.
#3415 of 3656
Re: CVT belt drive [kurtamaxxxguy] by saedave
Jul 03, 2009 (11:18 am)
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Replying to: kurtamaxxxguy (Jul 03, 2009 11:04 am)

Though the cooling problem was solved, mpg for that engine in the real world is poorer than for the turbo by 2 mpg average per Consumer Reports testing.
 
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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