W124 E320 coupe twin turbo

Discussion in 'General Discussion' started by liiive_o, Oct 17, 2008.

  1. Roger Jones

    Roger Jones Active Member

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    "i was hoping this 320 will be around 20mpg ."

    Unless all your driving is around town, you should do 20% better than that.
     
  2. OP
    OP
    liiive_o

    liiive_o Active Member

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    Location:
    london
    Car:
    W124 E320 twin turbo coupe, E220 Coupe
    i live in central london, i wont say i dont put my footdown,but 80% of the time i cruise,yet still can't get better than 20-25mpg on my E220 and this 320 is giving half less than what the E220 is...

    I think 1 of them has to go, and as much as i love her and spent time on her,my E220 has to go:(
    The twin turbo is too good to be sold.
    how do i upload pictures?
     
  3. Frank O' Phile

    Frank O' Phile Active Member

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    Why is anybody tryingto work out the 'economy' of a 3.0+ 6 or 8 pot, turbo'ed engine.

    Mine is a baby at only 3L 12v but I don't want to know the fuel comsumption or it's associated cost. (worth every penny IMHO)

    I reckon that even if I left it at home I would still only get 30(ish) mpg. For maximum economy out of the MB I take the bike to work.
     
  4. andy_k

    andy_k MB Enthusiast

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    we are getting more than that from the E55 :crazy:

    NSS :D
     
  5. coupe deville

    coupe deville Active Member

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  6. OP
    OP
    liiive_o

    liiive_o Active Member

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    Location:
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    Car:
    W124 E320 twin turbo coupe, E220 Coupe
    andy k, how do you drive your e55?

    thats shocking, so something is really wrong with my fuelling.
    i wish there was a merc specialist who would take the car for a weekend and give me an honest report of whats wrong with the car without ripping me off! does something like this exist?:))
    Bigyin 1, if you can recommend anyone in london with a dyno please do as i dont know many garages about,most of them dont have knowledge about these cars and just want to make quick money out of the smallest repaires.
     
  7. andy_k

    andy_k MB Enthusiast

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    within the speed limit at all times ;)

    We've only had it a couple of weeks so as you can guess, the novelty hasn't worn off yet - I've not exactly been caning it but neither have I been driving it like a granny.

    All my journeys have been at least ten miles, so the car always gets warmed up properly and I spend very little time sitting in traffic jams. Most of the roads are single carriageway national speed limit.

    Fuel economy, our 1995 320 estate turns in over 30 mpg and the E55 is doing a fraction over 23 mpg
     
  8. Ade B

    Ade B MB Enthusiast

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    I get as low as 16mpg on short trips round london.. Get a steady 29 on longer trips though..

    Ade
     
  9. Roger Jones

    Roger Jones Active Member

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    "i wish there was a merc specialist who would take the car for a weekend and give me an honest report of whats wrong with the car without ripping me off! does something like this exist?"

    I've seen favourable reports of:
    http://www.mercstar-uk.com/

    A bit further up the M1 and very near junction 10a is:
    http://www.harpendenautos.co.uk/

    run by the former service manager of the local main dealer, who is very familiar with cars of this generation. I saw a favourable report on that place only the other day and probably on this board. Luton is out of the London cost zone, so price is likely to be reasonable. It's also within walking distance of both Luton railway stations for getting back to London.

    Ah yes:
    http://tinyurl.com/628a6l
     
    Last edited: Oct 18, 2008
  10. OP
    OP
    liiive_o

    liiive_o Active Member

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    Location:
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    W124 E320 twin turbo coupe, E220 Coupe
    i shall give them a buzz...i really need to fix this problem asap.
    my reserve is £10 or 15 miles exactly...found out the hard way yesterday after it was empty...put in £15 and got 11 miles,light back on.

    looks like my other baby really has to go so i can just about maintain this thirsty beast :(
     
  11. andy_k

    andy_k MB Enthusiast

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    any decent engine tuner should be able to sort this out for you.

    spend a days petrol money :eek:, put the car on a dyno and let them analyze the problems
     
  12. janner

    janner MB Enthusiast

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    Car:
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    Are you using the TurboTechnics electronics? Is there any petrol leaking from the extra injector?
     
  13. OP
    OP
    liiive_o

    liiive_o Active Member

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    janner.
    yes the car was done by turbo technics, i havent checked.
    to be honest,i dont have much knowledge when it comes to the mechanics of the car, all i been told the smell n the smoke sometimes could be because of overfuelling.
    how do i check the leaking?
    whats your fuel consumption like in your twin turbo?
     
  14. janner

    janner MB Enthusiast

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    Haven't used it that much but it doesn't seem any thirstier than standard.
    You would know if it was leaking because it would stink of petrol under the bonnet.
    If it's simply overfuelling then maybe the TT electronics or extra injector are playing up?
    Has it only just started drinking fuel?
     
  15. OP
    OP
    liiive_o

    liiive_o Active Member

    Messages:
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    Location:
    london
    Car:
    W124 E320 twin turbo coupe, E220 Coupe
    i just bought it recently...it does stink of petrol.
    i had a 320 before,i dont think it was drinking as much as this one is.
     
  16. Mark300SL

    Mark300SL 1962-2010. Gone, but not forgotten.

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    The TT electronics are way out of date and werent much good when they were new :)

    Wideband Lamda and aftermarket management is the way to get the best from these kits.
    I went in Janners in Plymouth at the weekend and it was just very quick, no petrol smells and seemed to be running well. When his was tuned at Alan Jefferys it would have had a wideband fitted and fuelling will be accurate.

    I have a portable wideband and I could possibly check it for you - but I dont really want to get overly involved in someone elses project, although what advice I can offer is at least always free :)
    This car has been grief for its last two owners, and until someone who understands aftermarket turbocharging gets hold of it I fear it will remain that way.


    The key to the whole project is Management - without proper fuelling and ignition it wont ever be spot on, it may come close but it wotn be right. The SplitSecond is very good but only controlls fuelling. I am looking to possibly use the AEM FIC as this can also control ignition.
    Without spark control (and I mean control not TT bodge) you wont extract proper engine efficiency. The cheapest and easiest way forward will be a Split Second AIC combined with the TT ign bodge.
    DorianT and I fitted Adrians SS in a hotel car park in Torquay in very little time :)
     
  17. bolide

    bolide MB Enthusiast

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    I'm getting this strange sensation of deja vu...

    Nick Froome
    www.w124.co.uk
     
  18. OP
    OP
    liiive_o

    liiive_o Active Member

    Messages:
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    Location:
    london
    Car:
    W124 E320 twin turbo coupe, E220 Coupe
    mark300sl,
    thats very kind of you, im welcoming any help i can get as i do not really know too much about these things so its always good to get as many opinions as possible from people who have a clue.
    anything free would help alot,but im in london:(
    i checked the splitsecond website,but they had so many products didnt know what i need,and if i get it,would it help the fuel efficiency and take away the disgusting petrol smell and smoking?
    if you could show me what i need to get exactly i'd be really grateful.
     
  19. Mark300SL

    Mark300SL 1962-2010. Gone, but not forgotten.

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    Me too!

    I have no doubt that originally the TT setup was carefully monitored and deemed sufficient. In a lot of US and now UK retrofits its now however deemed "distinctly lacking". Modern technology is so much more advanced.

    The supplied TT additional injector controller is fixed and offers no method of trimming the setup to suit individual cars, so you are left with a set of parameters that TT decided were accurate all those years ago. now 15 years later with unleaded fuel, ageing fuel pressure regualtors and very few technicians about with the experience to sort them they are somewhat of a tricky subject.
    The facts are that this particular car has been back to TT and they couldnt sort it. It took a determined mechanic to make it even driveable, at which point the previous owner decided enough was enough and he sold it.

    Also a lot of these kits have been retro-fitted to cars that have new bottom ends fitted........ Go figure.


    For what its worth I bought my kit (wrong kit :D ) as a collection of high quality turbo parts that I will make very good use of nothing more. The manifolds, turbos, front pipes, oil lines, and coolant lines are basically the same for all kits. the major difference between the 3 kits is the management which i had earmarked for the bin before I even got the kit :)


    I am fitting a 3.0 24v kit designed for K-jet to a full EFI 3.2 24v all in a 190E - so my install was never going to be done by the book anyway.

    I'm in Essex - so not too far away unless you are only doing 10mpg ;)


    Mark
     
  20. Mark300SL

    Mark300SL 1962-2010. Gone, but not forgotten.

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    Janner is using the AIC1-A1L

    that translates to Additional Injector Controller with 1 injector Low impedance

    This should be correct if the car still has the stock aftermarket injector. this should measure 2-3 ohms resistance across the 2 pins.
    I have read of instances where the kits were deemed insufficient in fuel delivery. So people have swapped the supplied injectors out for much bigger injectors to compensate for the top end, which in turn introduces off peak boost overfuelling and possible bore wash. In other words it now fuels correctly at full power where it probably spends less than 0.05% of its life!

    Mark
     

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