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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Looking to purchase t5 c70 - LPT/HPTViews : 1540 Replies : 21Users Viewing This Thread : |
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Apr 9th, 2021, 17:59 | #11 | |
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Apr 9th, 2021, 18:07 | #12 | |
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That’s good to know, there is a lovely example of a t5 cab for sale in the north of the country which I may consider now, was just concerned about the handling being affected more than anything. If I go for it will definitely look into the Koni shock kit, is it readily available from Volvo or any other parts distributor? Also what’s the price like on the set? Sorry for all the questions but what tyres do you run? Was thinking Goodyear’s or uniroyal rainsport5’s however if it makes the cornering better will consider the more expensive brands Cheers Phil |
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Apr 9th, 2021, 18:33 | #13 | |
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I have AVON ZV7 all round but when I bought the car, it had winter tyres all round, I have to say, the scuttle shake was less with the winters so maybe the softer tread soaks up some of the scuttle shake??
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02 V70 2.4 Torslander Nautic blue, black leather, rear spoiler and tethys 17" wheels 03 C70 2.4 T GT Convertible Nautic blue, blue roof, beige leather. SOLD 05 C70 2.3 T5 GT Convertible Silver, black roof, black (grey leather) Collection interior |
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Apr 9th, 2021, 22:54 | #14 | |
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Okay thanks for the advice, will definitely be going for the shock kit whatever combination I go for, finally how would you the day the performance compares between auto and manual? Cheers Phil |
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Apr 10th, 2021, 07:53 | #15 |
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I've only had automatics so I can't give you a comparison and my V70 although a manual, is the P2 chassis.
The auto box is very smooth and great for easy cruising. Rather than having a sport button, It's adaptive and learns how you drive - the downside to this is that it can be a bit slow to go into sport mode if you have been driving 'economically' for a while. The gearbox works well if you are progressing through a set of bends but if you need to brake into a corner, it's not great, there's no engine braking and it doesn't change down until you apply throttle. There's a torque limiter to protect the box and the torque converter so it frustratingly changes up when you can feel the engine has more to give. That said, you'll never get tired of putting your foot to the floor to overtake on a straight road, if you are doing 40 - 50, the kickdown drops two gears and puts you right is the engines torque and boost band - it's a wild ride, my girlfriend calls it "Warp drive"! I think if you buy the coupe, you would be better off with a manual but the convertible is more about the enjoyment of top down driving and I would say you're better off with the auto.
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02 V70 2.4 Torslander Nautic blue, black leather, rear spoiler and tethys 17" wheels 03 C70 2.4 T GT Convertible Nautic blue, blue roof, beige leather. SOLD 05 C70 2.3 T5 GT Convertible Silver, black roof, black (grey leather) Collection interior |
Apr 10th, 2021, 11:49 | #16 | |
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Regards John
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Apr 10th, 2021, 12:34 | #17 |
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Thats interesting to know (if correct). I've often wondered how much more torque the gearbox can take if the engine was chipped.
The limiter is to prevent over revving in all gears, whether this is to prevent over stressing the gearbox or to prevent wheel spin I don't know, I was told the former. It changes up at around 5,200 rpm, looking at a bhp and torque graph for the 2.3, there's still a bit more to give and you can feel it, there's about 10 more bhp available at 5,500 rpm.
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02 V70 2.4 Torslander Nautic blue, black leather, rear spoiler and tethys 17" wheels 03 C70 2.4 T GT Convertible Nautic blue, blue roof, beige leather. SOLD 05 C70 2.3 T5 GT Convertible Silver, black roof, black (grey leather) Collection interior Last edited by tony209; Apr 10th, 2021 at 12:38. |
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Apr 10th, 2021, 14:46 | #18 | |
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The torque limiter does not limit engine revs - at 5200rpm (your change point) you are over the torque peak and it falls off quite quickly. I believe the gearbox ECU works in conjunction with the engine ECU to adjust the fuelling and boost to keep the engine torque down (hence why autobox engine ECU's are different to the manuals). Your change point seems a little low - my auto 4 speed T-5R shifts at 5,600 rpm and my auto 5 speed C30 and C70 T5 polestars both shift around 5,700 rpm as well Note that bhp doesn't give you acceleration, it's torque that does that. Because at higher revs the torque multiplication from the converter slackens off, an earlier shift point is likely to result in better acceleration if there is no "lock-up" mode on the torque converter (in lock-up there is no torque multiplication, the drive is directly transmitted to the gearbox which is good for fuel consumption). When the box shifts up, assuming no lock-up, although you are dropping back down the engine torque curve, you get higher torque multiplication at the lower revs in the next gear. All of these parameters are held within the ECU's to give the optimum performance The 42LE equipped T-5R/T5 and R have no lock up in the first 3 gears and lock-up in 4th only occurs at well over 100 m.p.h. Fuel consumption is thus adversely affected but acceleration is very good. Non turbo 850 models do have lock up in the lower gears but again, only when revs are lower and smaller throttle openings are applied. In the quest for improved fuel consumption and emissions, on SN55 5 speeds, lock up is available on 2nd, 3rd, 4th and 5th from about 1700 r.p.m at small throttle openings. At wide throttle openings, lock-up is disengaged and comes back on much higher up the rev range. All very complicated but I hope it makes sense. Regards John
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Apr 10th, 2021, 19:43 | #19 | |
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Cheers again for the advice, much appreciated! Phil |
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Apr 10th, 2021, 19:47 | #20 | |
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Cheers again Phil |
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