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#46
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60 kph is pretty low speed James.
Did you mean to say 60 mph? I don't let mine into Drive until I see 95 or 100 kph on the clock [my clock is still Japanese spec], and not even then unless I am travelling unrestricted highway or main road where I can hold D4. Joe
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#47
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Re: Confirm a point:.....
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phil p.s. lemme check what 4th is at 45 when i get home phil
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~Phil Teal 1992 Subaru SVX Turbo - Sold in May 2011 to peace-frog. Last edited by Phast SVX; 03-06-2003 at 12:05 PM. |
#48
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Re: Re: Confirm a point:.....
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I had forgotten you were using a lower diff. If you still used the standard, about 3.89 if memory serves, you would be at 1700-1800 rpm, and not as ready to pull away. Not a true or fair comparison really. Still like to hear how the 4.44 works with the auto. Joe
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#49
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Re: Re: Driving in Manual in traffic.
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I think this shift map would be unsuitable for more powerfull driving as it may lead to excess slipping of bands and clutches. Taking off in 2nd would increase the load on the box, while holding the engine rpm low with the resualtant low line pressure. If you think about it, the line pressure is between 64 to 82 psi at idle rising to 164 to 182 psi at 2500rpm. So how much pressure is there, clamping the friction surfaces, as you take off in 2nd gear at a fast idle? 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. |
#50
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a bit confused
Ok, I'll start by answering the question. I always drive in D. Even going uphill, or downhill (actually downhill is a different story, depends how steep).
Why? Simple, the tranny designed to do that. It is designed to shift up and down. And not only that, the common sense, when the RPM is low, you get less wear on the engine, when RPM is high, it is easier in some cases for the engine, but you use it up a lot more. Of course, SVX has a very weak tranny, but by driving it in 3d, you don't save it at all. You force it to spin at a very high RPM, and burn all the clutches inside, or wear them out a lot faster. Going back couple pages back, when Trevor said that Quote:
If you guys interested in more details, I will ask my mechanic about all this, he knows a lot more then me, since he works in the tranny shop.
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Nikita Petrov (Nik) Red 94 LSi 2013 Honda PCX 150 2011 Subaru Impreza 2009 Subaru Outback Alternative Ways of getting around 2011 Felt Edict 9 SE 2009 Felt FX 35 2006 Cannondale CAAD9 |
#51
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Zamorush,
Operation of the tranny is slight different in all SVXes. It depends on the model year ( 92-93, 94-95, 96-97)and whether Trevor has a European, Asian or NA model SVX. From now on when we discuss tech items we ought to list the MY and model and world area that our SVX was meant for. I now have 3 SVXes, MYs 92, 94, 97. All are USA cars. All have orig. trannys. All have different shifting characteristics. Heck even the seats feel differnt. The 94 has the firmest driver's seat. The 92 is less firm. The 97 is the softest and cushiest. I love all 3. they are just slightly different.
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#52
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sounds good to me...........
Tell you the truth I was just generalizing all of them because they all have the same model of transmission. There are some differences though, i am sure about that, although I have to research on that. By the way, most of the Subarus have same tranny as an SVX (again model #) it does not mean that they all have same insights, but you can still swap them.
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Nikita Petrov (Nik) Red 94 LSi 2013 Honda PCX 150 2011 Subaru Impreza 2009 Subaru Outback Alternative Ways of getting around 2011 Felt Edict 9 SE 2009 Felt FX 35 2006 Cannondale CAAD9 |
#53
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I drive in third quite a bit. the trans turns the same speed as engine in 3rd. 1:00-1 ratio. I normaly keep rpms under 4grand when doing this. If the trans would stay in drive I would use it more. Just doesnt cooperate much on some days.
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#54
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Re: Re: Re: Confirm a point:.....
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~Phil Teal 1992 Subaru SVX Turbo - Sold in May 2011 to peace-frog. |
#55
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automatic = manual
So basically when you drive in 3d, this is the same thing as you drive a manual transmition but never switch to 4th, and 5th gear.
Right?
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Nikita Petrov (Nik) Red 94 LSi 2013 Honda PCX 150 2011 Subaru Impreza 2009 Subaru Outback Alternative Ways of getting around 2011 Felt Edict 9 SE 2009 Felt FX 35 2006 Cannondale CAAD9 |
#56
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Almost. It would be the same except for torque converter slippage.
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#57
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Quote:
HERE IS THE KEY.....The first owner(whom i have spoken to multiple times and is very excited about where his car is now) had a corvette for his weekend car. He drove the SVX all highway to clients. There fore, his tranny shifted very few times compared to your average car. The second guy did none of the above, drove around town, and did very little highway driving at all. His average trip was 2 miles to work. The wear and tear involved with intown driving seems to be the culprit in my eyes. my 2cents, take it or leave it phil
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~Phil Teal 1992 Subaru SVX Turbo - Sold in May 2011 to peace-frog. |
#58
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Re: automatic = manual
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When comparing with a manual you should think more along the lines of a three speed with overdrive i.e. 3 is direct drive and what would be normal top gear in an old three speed with 4 being an overdrive.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#59
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I see what you mean Trevor.
So here is another question then, what is the point not switching in 5th then, or D? Your RPM is pretty high, and you are wasting a lot of gas. However, if you live in such area like San Francisco, or some place crowded, then you just go from light to light, and it is better just to keep it in low gear. For me though, every day commute is a 45-80-45 mph all the way to college. I just keep it in D, and no hassle. Still, though, automatic will go to 4th even if you are driving 25 mph, and you can just cruise...... "It is a stick of two ends"
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Nikita Petrov (Nik) Red 94 LSi 2013 Honda PCX 150 2011 Subaru Impreza 2009 Subaru Outback Alternative Ways of getting around 2011 Felt Edict 9 SE 2009 Felt FX 35 2006 Cannondale CAAD9 |
#60
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Zamorush,
The main point of not wanting to allow the car to change up to D or 4th ratio at slow speeds has been covered in detail in some of these threads, particularly by Harvey, ob-au, you can search his posts. Because the final drive is so high, 3.53 as Phil corrects me, and because 4th is a very high overdrive at 0.694, this means if the car is travelling at slow speeds with 4 engaged, the engine is only turning over at 1500 rpm +. This is very restful in a "cruising" sense, but puts high torque loads on the internals, and also, the pump oil pressure in the box is not up to maximum because the revs are too low. Line pressure being too low means the brake band which operates on 2 and 4 may not have sufficient grip to avoid slippage. Most of the people who have replaced/rebuilt ther trannies first notice the wear as a "flare" on 2. The shift map causes the box to seek 4 at about 45, and will slip the TC rather than drop to 3 unless you make it kick-down or get POWER engaged. This puts heat and torque loads on the tranny. These loads are a contributary factor in the recurring tranny failures. If the final drive was lower, say 4.11, then possibly the current shift map would work very well, this is discussed in another thread. Joe
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
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