To force or not to force? That is the question... No actually it's method of force. E31 mod question

Notices
 

Thread: To force or not to force? That is the question... No actually it's method of force. E31 mod question

Reply to Thread
Results 1 to 6 of 6
  1. To force or not to force? That is the question... No actually it's method of force. E31 mod question 
    #1
    Bimmer Fan
    Car Details
    neverl8's Car Details
    Model of Car:
    850CSi
    Year of Manufacture:
    1996
    Transmission Type:
    Six Speed Manual
    Car Body Type:
    Coupe

    Join Date
    Nov 2013
    Location
    Ohio
    Posts
    9
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Hello. New owner, new to forum. Greets.

    I own a 97 840Ci with the 4.4L V8.

    I am not looking to go crazy but would like to do my best to gain the same torque and bhp output as the CSi. 380bhp and I think 412ft lbs?

    Anyhow the car as it stands has 286bhp and 310ft lbs. So an increase of 100 to each...

    What is the best way to go about this? I was thinking modified aspiration and exhaust system (headers back.)

    If anyone has experience with this particular car it would be greatly appreciated in sharing.

    My real question was should I go turbo or supercharger? In manufacturing I typically see turbos used on smaller engines, like a 6 or 4. There has to be a reason for that.
    Most V8s I see have a supercharger (especially Audi)

    Does the stock vehicle host capacity for this level of modification?

    I know partially this belongs in the modified aspiration thread but there's no root thread. Why would I ask turbo questions in the supercharger section and vice versa?

    If they were contained in a root topic area such as "Modified Aspiration"and then within THERE you choose I could ask the question plainly and then dive into the needed type and ask about best practices etc...


    Thank you in advance and please accept my apology if this is not the correct section. It was difficult to determine but I felt what I've asked is germane to this generic "mods" area.
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    BMW Guru
    Car Details
    goldbcfc's Car Details
    Model of Car:
    Z4
    Year of Manufacture:
    2003
    Transmission Type:
    manual
    Car Body Type:
    roadster
    goldbcfc's Avatar
    Join Date
    May 2011
    Location
    Birmingham
    Posts
    4,302
    Thanks
    361
    Thanked 416 Times in 397 Posts
    I think turbos create extra power on their own (pro) but have horrible turbo lag (con) and superchargers dont have any lag (pro) but use some of the engines power (con)

    So im thinking bigger engines are suited to superchargers because they have huge power already so not much is lost using supercharger whereas smaller engines benefit from turbos to create extra power lets say in a 2.0 engine with a turbo now becomes a beast so a properly tuned 2.0T could easily have the same power and 0-60 times as a 4.0 supercharged car

    Im not 100% before any dives in but this was my undertanding of turbos and Super chargers

    E46 coupe 318ci
    E46 convertible 330ci
    E46 coupe 325ci
    E85 Z4R 3.0i
    E46 coupe 330ci
    E85 Z4R 2.2i
    E46 convertible 318ci
    E85 Z4R 2.5si
     
     

  4.  
    #3
    BMW Fanatic
    Car Details
    Delboy318dm's Car Details
    Model of Car:
    318d Msport
    Year of Manufacture:
    2010
    Transmission Type:
    Manual
    Car Body Type:
    Saloon
    Delboy318dm's Avatar
    Join Date
    Oct 2013
    Location
    Paisley
    Posts
    62
    Thanks
    0
    Thanked 9 Times in 9 Posts
    My understanding is... turbo charger=good
    Super charger=goooodd



    Sent from AutoGuide.com Free App
     
     

  5. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  6.  
    #4
    BMW Guru
    Car Details
    goldbcfc's Car Details
    Model of Car:
    Z4
    Year of Manufacture:
    2003
    Transmission Type:
    manual
    Car Body Type:
    roadster
    goldbcfc's Avatar
    Join Date
    May 2011
    Location
    Birmingham
    Posts
    4,302
    Thanks
    361
    Thanked 416 Times in 397 Posts

    E46 coupe 318ci
    E46 convertible 330ci
    E46 coupe 325ci
    E85 Z4R 3.0i
    E46 coupe 330ci
    E85 Z4R 2.2i
    E46 convertible 318ci
    E85 Z4R 2.5si
     
     

  7.  
    #5
    Bimmer Fan
    Car Details
    neverl8's Car Details
    Model of Car:
    850CSi
    Year of Manufacture:
    1996
    Transmission Type:
    Six Speed Manual
    Car Body Type:
    Coupe

    Join Date
    Nov 2013
    Location
    Ohio
    Posts
    9
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Thanks guys. I was leaning towards Supercharger for a number of reasons. I agree the draw of power is insubstantial on these 4.4L engines.
    1) I had a 97 GNX and it needed an intercooler. I imagine a turbo setup is a lot more work and probably a bit harder overall from the standpoint of vehicle wear.
    2) It would be nice to have it off the line. (Although I know there are many ways to spool up turbos quickly so there's little to no lag)

    I was thinking of water-alcohol injection as well but you REALLY need to be concrete on the engine itself as far as knowing if it can handle that moisture.

    What I planned on doing was:
    - Pull engine, polish ports, head work, PPG is down the street.
    - Add a supercharger (if such a kit exists)
    - install state minimum legal exhaust
    - ECU re-map/chip (I think my car can't be chipped) or maybe run the interceptor although that seems a bit janky.
    - Suspension overhaul. (Would it be worth it to replace outright and abandon stock?Use bilsteins, etc or just freshen up?)
    - POSSIBLE brake upgrade.

    I think you guys see what I am going for here...
    I intend to replicate the CSI as best I can with the 4.4L V8

    It had more than just extra power.. there was a lot to that car which separated it from the family.

    If I had the $60K I would buy this one in a flat second.. WOW is this car immaculate!!!!!
    BMW 8 Series CSI | eBay

    69K mi but looks showroom!

    What's most attractive about it is that it's unmolested. even has the granny wheels from the factory!
     
     

  8.  
    #6
    Authorised Bimmerforums UK Vendor
    Car Details
    bwchiptune's Car Details
    Model of Car:
    x5
    Year of Manufacture:
    2002
    Transmission Type:
    auto
    Car Body Type:
    estate
    bwchiptune's Avatar
    Join Date
    Jan 2010
    Location
    Hayes west london UB3 1BB
    Posts
    2,690
    Thanks
    53
    Thanked 278 Times in 245 Posts
    You could fit the engine from a e39 m5
    I might also be cheaper to do
    I do all the software mods so these will run in any car

    Sent from AutoGuide.com Free App
    Last edited by bwchiptune; 25-11-2013 at 01:06.

    PERFORMANCE ECU TUNING(ALL CARS)FOR Bimmerforums MEMBERS
    CHIPPING AND REMAPPING
    Dyno Dynamics Rolling Road
    WORKSHOP REPAIRS(BMW,AUDI,VW,VAG,MERCS)
    TURBO,SUPERCHARGER TUNING
    ENGINE TRANSPLANT ECU CONVERSIONS
    CODING & PROGRAMMING,
    ECU REPAIRS & DPF,CAT REMOVAL
    REMAPPING TOOLS AND TUNED FILES AVAILABLE
    M5 F10 M6 F12/13 REMAPS £699
    WE HAVE NOW MOVED TO HAYES UB3 1BB
    www.bwchiptune.co.uk
    www.bwautorepairs.co.uk
    www.tuningtools.co.uk
    +44(0)7831 10 30 30
    +44(0)208 561 18 18
     
     

Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts