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#16
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The engine is doing the same amount of work, moving the same mass, regardless of which wheels are driving the car.
dcb |
#17
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well thats correct, however with FWD only, your motor is moving, lets say, 22lbs of rotating mass, and with it enabled, its moving 70lbs of rotating mass, the weight of the vehicle dosent change, but the rotating mass of the increased driveline does... does that make sense?
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#18
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The SVX tranny is essentially a FWD tranny that connects the rear driveline to the front driveline with a variable pressure clutch. When you are cruising along in AWD mode the clutch is lightly engaged. During hard acceleration, its full engaged. When you put it in FWD mode, the clutch never engages, but since the rear driveline is still connected to the rear wheels, the rear driveline still spins along as usual. No change in rotating mass. However, you might see some small increase in gas mileage in FWD mode because the front and rear drivelines are not fighting each other during cornering. If you put it back in AWD mode, make sure the front wheels have at least 4 psi more than the rear. This minimizes the difference in rolling circumference between the more heavily loaded front wheels and the less heavily loaded rear wheels.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#19
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good information! It uses a viscous clutch I assume then. Similar to the skyline and AWD olds bravadas. That makes sense to me.
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#20
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Others have tried it on the Ultimate Subaru board and actually found that their mileage is worse slightly (which would probably be to driving conditions my guess). You need to remember that only 10% of the power is going back there and the loss will occur regardless of if the fuse is in or not. Even if you get 10% better economy. The wear on the system that is not meant to be fwd except for emergencies far outweight any benefit you might see. Slow down or turn the ac off and you'll get better mileage.
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British vehicles are my last ditch attempt to keep the nasty Italian thoughts in my mind at bay. So far its working. |
#21
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Quote:
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#22
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right. This is native FWD whereas teh bravada and skyline are native RWD.
ill pull the fuse out! |
#23
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Now if you could drive it with the fuse in and the back wheels off the ground,,,,,,,,,,Oh never mind. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#24
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Seems the added traction of AWD would actually improve fuel economy, if only to a virtually immeasurable degree. As I recall it was pretty easy to unintentionally break traction with my old 90 horsepower GL in FWD (I used to shift it to 4WD in the rain); with a FWD SVX, I'd think that a common occurrence.
dcb |
#25
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Quote:
Sounds even better with side pipes. I encourage all of you to call me up and take a listen for your self. Such a unique sound and rasp to the tone. Every time I start my car up it melts my butter. Keith
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The member formerly known as Civic_Slayer 1992 "Robins egg blue" SVX Originally Claret 147k- CURRENT 1992 Pearly 187K and climbing (11-91) #964 *retired 1992 Pearl SVX 122500 miles #86 FASTAR THAN THE OLD ONE.*SOLD Everytime I get into my car, it always reminds me that it has POWER |
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