MG-Cars.info
MG ZR ZS ZT Technical More Power for the L series diesel. BBS discussion at MG-Cars.info
MG-Cars.info
Welcome to our Site for MG, Triumph and Austin-Healey Car Information.
Parts
MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.
|
|
MG ZR ZS ZT Technical - More Power for the L series diesel.
| Today is an announcement of an extra 12PS for the L series along with an extra 20Nm of torque, so that power is raised to 113PS and torque to 260Nm. Other aspects like CO2 and economy are unchanged. No doubt the full release, which applies to Rovers also, will follow. The new specs will be available from January. Not stated in the release is the 'discussions' that have been ongoing with Ford before this modified spec could be introduced. This discussion was about rights of ownership etc, of the engine. The fact that this has been resolved should allow some more progress towards not just tweaking the existing, which can be done far beyond the new power level, but being able to have the extra power without hurting the emissions and fuel economy. For that read common rail and other new technologies so at least a match to the VAG 1.9 TD is quite a reasonable prospect. Don't expect this to be round the corner though. Rog |
| Roger Parker |
| For what reason is this change made ? The 101 HP version was not so much short on power as suffering from noise,smoothness & vibration. Will these features be improved or stay largely the same? Why bother with this if the 135 HP version has recently been created ? |
| andrew |
| Different engine, Andrew, the 135PS one. |
| MG |
| I am with Andrew, the problem with the L series is that it sounds like a London Taxi. The benefit of all the new European Diesels is that they do not shout so loudly that you can't afford a proper engine in your car! Cheers Patrick |
| Patrick Beet |
| Release immediate December 11, 2002 ENHANCED PERFORMING DIESEL MODELS MG Rover has today (December 11) announced an extension to its diesel model line-up with the introduction of a higher output engine. Available in January, the MG ZR and ZS, and Rover 25 and 45 utilise the Longbridge-built L Series turbo diesel engine, now engineered with an increased tune to produce greater operating performance, but with no penalty in CO2 emissions. Power increases from 101 to 113Ps and torque from 240 to 260Nm, while the CO2 emissions figure at 150g/km is identical to the current 101Ps models. This is exceptionally low, even by diesel car standards and translates into low operating levels of taxation for business users who want to benefit at all levels from increased power and performance. Compared with the current diesel line-up, these new models have identical trim specifications, but offer more impressive levels of performance and similar frugal levels of fuel economy. Identified as the Rover 25 Turbo Diesel (113Ps) and MG ZR 115, ABS with ventilated front and solid rear disc brakes is featured as standard over the regular Turbo Diesel specification. ABS is already specified as standard on the Rover 45 and MG ZS. Rover 25 and 45 Turbo Diesel (113Ps) Models The Rover 25 is available in two trim levels – Rover 25 turbo diesel (113Ps) iE and iL. The Rover 45 has three trim levels – iE, iL and iXL in 5-door Hatchback and Classic, Club and Connoisseur for the 4-door Saloon. Option availability is in line with the current 101Ps models. Pricing & Specification Retail Price CO2 GVED Band OTR Price Rover 25 3 door 2.0 iE Turbo Diesel (113Ps) £11,290 150 B £11,425 2.0 iL Turbo Diesel (113Ps) £11,830 150 B £11,965 Rover 25 5 door 2.0 iE Turbo Diesel (113Ps) £11,845 150 B £11,980 2.0 iL Turbo Diesel (113Ps) £12,385 150 B £12,520 Rover 45 5-door Hatchback 2.0 iE Turbo Diesel (113Ps) £12,595 150 B £12,730 2.0 iL Turbo Diesel (113Ps) £13,610 150 B £13,745 2.0 iXL Turbo Diesel (113Ps) £14,525 150 B £14,660 Rover 45 4-door Saloon 2.0 Classic TD (113Ps) £14,420 150 B £14,555 2.0 Club TD (113Ps) £15,340 150 B £15,475 2.0 Connoisseur TD (113Ps) £16,350 150 B £16,485 Performance Data Rover 25 Turbo Diesel Rover 45 Turbo Diesel Engine Capacity 1994cc 1994cc Max Power 113Ps / 83kW @ 4200 rpm 113Ps / 83kW @ 4200 rpm Max Torque 260 Nm (EC) @ 2000 rpm 260 Nm (EC) @ 2000 rpm 0-60 9.1 seconds 9.8 seconds Top Speed 115 mph 118 mph Fuel consumption Urban cycle 36.7 mpg / 7.7 l/100km 36.2 mpg / 7.8 l/100km Extra Urban 67.3 mpg / 4.2 l/100km 65.7 mpg / 4.3 l/100km Combined 51.5 mpg / 5.5 l/100km 50.5 mpg / 5.6 l/100km CO2 150 g/km 150 g/km MG ZR 115 and ZS 115 Turbo Diesel Models The MG ZR and ZS are both available in two trim levels – MG ZR 115 Turbo Diesel and MG ZR+ 115 Turbo Diesel – and the ZS – MG ZS 115 Turbo Diesel and MG ZS+ 115 Turbo Diesel. Option availability is in line with the equivalent 101Ps models. Pricing & Specification Retail Price CO2 GVED Band OTR Price MG ZR 3 door ZR 115 Turbo Diesel £11,520 150 B £11,655 ZR+ 115 Turbo Diesel £13,145 150 B £13,280 MG ZR 5 door ZR 115 Turbo Diesel £12,075 150 B £12,210 ZR+ 115 Turbo Diesel £13,700 150 B £13,835 MG ZS Hatchback ZS 115 Turbo Diesel £13,560 150 B £13,695 ZS+ 115 Turbo Diesel £14,575 150 B £14,710 MG ZS Saloon ZS 115 Turbo Diesel £14,370 150 B £14,505 ZS+ 115 Turbo Diesel £15,390 150 B £15,525 Performance Data MG ZR 115 Turbo Diesel MG ZS 115 Turbo Diesel Engine Capacity 1994cc 1994cc Max Power 113Ps / 83kW @ 4200 rpm 113Ps / 83kW @ 4200 rpm Max Torque 260 Nm (EC) @ 2000 rpm 260 Nm (EC) @ 2000 rpm 0-60mph 9.1 seconds 9.5 seconds Top Speed 116 mph 120 mph Fuel consumption Urban cycle 36.7 mpg / 7.7 l/100km 36.2 mpg / 7.8 l/100km Extra Urban 67.3 mpg / 4.2 l/100km 65.7 mpg / 4.3 l/100km Combined 51.5 mpg / 5.5 l/100km 50.5 mpg / 5.6 l/100km CO2 150 g/km 150 g/km |
| Ann MG Writer |
| If what Andrew said is true,making these small modifications to the existing engine seems to be a waste of effort & money for the ZR -and why not install the more modern 135 HP engine in the ZS ? |
| Tony |
| The 131PS engine in the ZT CDTi 135 is the BMW M47 TD engine - a totally different engine to the L series. These tweaks to upgrade the MGR manufactured L series engine will have been very cost effective. I think it would be economically unfeasible to install the M47 engine in the ZR/ZS plaforms:- 1. ZR/ZS with M47 engine would require new type approval - very expensive for these platforms with a relatively limited life. 2. M47 engine is outsourced from BMW, its expensive and in short supply - BMW can't manufacture enough of these to satisfy their own production demands. As Roger Parker said the real solution to improving the performance, but more importantly the refinement of the L series engine is common rail injection. Most European diesel engines now use ultra high pressure common rail -VAG 1.9, new Ford 2.0TDCi, and BMW M47 amoungst them. I recently tried the ZT 135 CDTi, and was really impressed. I've already decieded that it will be the replacement for my KV6 R75 in the new year. |
| adrian |
| Thanks for your valuable comments Adrian,but I would again ask how these minor" tweeks" can be cost effective if they don't address the essential problems of that engine? I am therefore now resigned to never seeing the 135 HP diesel in the ZS and ,if type approval is so costly,wonder if the 160 HP turbo will also never appear in the ZS ? If that is the case,then its Good Bye to MGR as far as I am concerned. |
| andrew |
| The updates to the L series are restrained in order that they are 'simple adjustments' and therefore create a 12% power and 8% torque increase over the same rev range as before. This is almost a something for nothing and the revised figures provide a far more acceptable view for number crunching buyers. The other reason that power was not taken further is that long term reliability is maintained at the same levels as before. I shall soon have a period with one of the new ZR TD models specifically to compare with the time spent with a previous model ZR TD. Often far more is gleaned from a period with a car than from examination of the figures. The other point is that the M47 engine from BMW is not being considered for fitting into either 25/ZR or 45/ZS, form many reasons including that it is simply because the engine is too damn expensive. BMW does no favours in terms of engine costs! Even if the engine would easily fit into these ranges, especially ZS, which it won't as it is attached to a Getrag gearbox and not a PG1 of the ZR/ZS amongst other issues, then it wouldn't be in 131PS form as this would create a higher performing car than the 75/ZT models. It would appear in 116PS form and then in simple power terms what advantage is that over the uprated 113PS version which has the same torque? The advantage would be in refinement but not worth the cost involved. Time can see much of the gulf between the L and M47 filled with elements I mentioned at the head of this thread. Quite whether these will be seen in the 25/45/ZR/ZS ranges is debatable. Resources and priorities are very firmly focussed in getting genuine new product through on time and right. The last couple of years alterations to the current ranges are at a point where further significant changes are unlikley and a poor use of the limited engineering resourses available On that basis I would not advise anyone to hold their breath waiting for any re-engined current model, other than the ZT260 and ZT385 which we already know about. Rog |
| Roger Parker |
| Thanks for these comments Roger So presumably you don't think the ZS will ever get the 160 HP turbo either ? In which case, does someone know from whom I could get a ZS 120 on a two year lease basis till the new models are launched? |
| andrew |
| Hi, I have the lower power ZS (not that it goes bad) but is it possible to get this extra power out of the car easily. Is it just chip tuning? thanks Steve |
| Steve |
| >>>So presumably you don't think the ZS will ever get the 160 HP turbo either ?<<< No I don't think so. However, beyond 2004 when the new 45 appears there is an almost universal assumption that there will simply be an MG version of that car. This may not be the case and it relates to a long standing and early stated aim of the company (and comments that are repeated every so often)to develop the MG and Rover brands in different directions. There is plenty of potential in the current ZS chassis and it is the cosmetic aspects which need to be dealt with. What price a reskinned ZS with modern interior as a stand alone range with it's own powertrain specs?? Rog |
| Roger Parker |
This thread was discussed between 11/12/2002 and 25/12/2002
MG ZR ZS ZT Technical index
This thread is from the archives. Join the live MG ZR ZS ZT Technical BBS now