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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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High Miles ex police xc70 - bad idea?Views : 3806 Replies : 36Users Viewing This Thread : |
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Jan 12th, 2022, 15:22 | #31 | |
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Jan 12th, 2022, 16:26 | #32 |
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A petrol engine generally manages the power level at a given speed by throttling, that throttling causes pumping losses. Basically the engine is forced to suck in the air (and fuel depending on injection site) through a small gap - the throttle. So small amount of air sucked in, and small amount of fuel injected as the AFR (Air Fuel Ratio) needs to be maintained around 14.7:1 because of the catalytic converter, although the range cannot vary too much without one either.
A diesel on the other hand does not have that inlet restriction, unless there are swirl inducing devices in the inlet for low load situations, so there is much less restriction during this stroke of the cycle. This is because diesel runs over a massive AFR range - sucks in lots of air, then injects a little bit of fuel. Where does a turbo fit into this? Increases air pressure so that more air can effectively go into the engine each cycle so more fuel can be injected for a given cylinder volume. So increased effective volume is achieved without the frictional losses which are generally the greatest hence greater efficiency is possible. |
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May 1st, 2022, 22:45 | #33 |
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Last Online: Nov 6th, 2023 16:34
Join Date: Feb 2019
Location: Glenrothes
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xc d5
i owned this car and sold it to the seller a couple of years ago-approaching 200k
when i owned it i serviced it twice in the year or so i had the car fitted genuine cam belt kit and volvo bolts etc new aux tensioner and belt couple of tyres osf lower balljoint body had a good few marks gear selection console had a bit of play clutch/flywheel was done at decomission sale was uber reliable,great to drive had full history-police and all the private services i was myself thinking of buying it back but opted for a newer auto time will tell if i have done the correct thing |
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May 2nd, 2022, 07:52 | #34 |
Pain in the backside
Last Online: Yesterday 20:48
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Location: Newport
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I've ignored the past 3 pages of responses to give you my opinion.
You know the d5 lump, It'll take the hammering of a pursuit. Being plod? I assume it'll be twin turbo'd. Manual? As long as you have a bit of a hint that clutch and flywheel is good, go for it. Else set aside £1200. 9 hours labour to do that. Also check for driveshaft leaks on front output shafts. I just got stung for a rebuilt m66awd box for £2600. HOWEVER, Smooth as silk, Service the haldex and it'll not let you down. I have the Poverty spec SE model, If you're doing 25 miles each day, that'll be ok, Volvo's regenning system is good. If you get the "Soot filter full" time for a thrash. Aside from the usual holes in various places, depends on how they decommissioned the car. Either they cut and tug, or its taken apart carefully. You might have a dose of rattly trim syndrome at the front. Rear, has fragile plastics, same as the p2. Entertainment system should still work. Mines 177k in, and still is as tight as a new car. Even though it's been looked after by plod techs, set aside some time to clean out the emission system upstream, EGR and flaps and that. |
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May 2nd, 2022, 09:46 | #35 |
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Last Online: Nov 6th, 2023 16:34
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ex plod
The clutch/fly was only appx 20k old when i bought it-so figure on 60k ish now-the plod got 150/60k from it
Transmission as new,dry as a bone,no whines-nada big front disc model-forgot i also did pads all round whilst i had it interior was ok,tatty below the boot cover where you cant see-i re-routed the harness to tidy and removed some redundant wiring-it had an aftermarket towbar fitted also The rear trailing arm bushes were a little squeaky when i sold it but i am sure the new owner had them done my lad had also set the alignment up on the hunter not long before it went and yes 205 twin turbo-probably in police tune so maybe 230bhp... |
Sep 3rd, 2022, 18:48 | #36 |
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ECU is the Polestar unit but called "Police"
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Blue 2011 Volvo XC70 D5 AWD Police Spec - Current Grey 2005 Volvo XC70 D5 AWD SE - Gone after 230,000 miles |
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Sep 3rd, 2022, 19:02 | #37 | |
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Location: Carmarthenshire
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No idea what's been transported in them either but I did find a mug shot photo of some guy they must have been looking for and an iPhone 5SE stuffed under the seat - when I turned it on, it was in Icelandic so I imagine someone lifted it off a passenger at Stansted as mine was a Essex Police. I bought a genuine load carrier cover and a centre console with the cubby & cup holders and swapped out. Other thing was re-connecting the front speaker wire that had been cut. It still looks scruffy, where the holes in the roof were the paint is all discoloured and the trim doesn't line up from a couple of small knocks I guess. However, it is totally reliable and goes like stink, handles and stops very well indeed. Not a show car, was very cheap to buy for comparable plate non Police even at same mileage but it does what I need it to, whenever. Love it
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Blue 2011 Volvo XC70 D5 AWD Police Spec - Current Grey 2005 Volvo XC70 D5 AWD SE - Gone after 230,000 miles |
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