Lightened flywheels

Discussion in 'Engine, Gearbox, Exhaust and Air Intake' started by Spanky-197, Feb 14, 2015.

  1. Doogle

    Doogle Winner - POTM March 2018 Paid Member

    Messages:
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    Location:
    Plymouth
    Car:
    BMW e46 330cd
    The ph1 was not exactly heavy! It makes sense not producing lightweight flywheels if there is not enough profit in it. There are a lot of people wanting to save weight on their Clio's though, thats for sure.
     
    Raptor6767 likes this.

  2. J90RDN

    J90RDN Paid Member

    Messages:
    344
    Location:
    Leicestershire
    Car:
    Clio 197 - Track
    If the standard flywheel is only 6kg then that's relatively light (relative to other cars standard flywheels). Has anyone looked into removing material from the standard flywheel? I know my local engineering works charge about £80 for removing material and re-balance.
     
  3. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    I did it on my stock flywheel. No difference at all due to the fact there's not much material to remove (I believe the difference was 300g). And I spent 100€ for the removing the material and balancing.

    http://i37.photobucket.com/albums/e99/raptor6767/Renault Sport Clio 197/Flywheel/24102009055.jpg

    http://i37.photobucket.com/albums/e99/raptor6767/Renault Sport Clio 197/Flywheel/24102009054.jpg
     
  4. J90RDN

    J90RDN Paid Member

    Messages:
    344
    Location:
    Leicestershire
    Car:
    Clio 197 - Track
    Yeah that makes sense, and backups my initial statement about the standard flywheel being relatively light in first place.
    Guess different material is the only (and more expensive) way to go.
     
  5. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    Yes, that's the only way to go.
     
  6. Jayson42

    Jayson42

    Messages:
    9
    Car:
    Facel Vega HK500
    PMed on the lightened crankshaft pulley and wheel spacers, maybe go the lightened flywheel if you have found time. Where you also planning on doing a different intake to the R3 maxi?
     
  7. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    I turbocharged my engine so I didn't pursue it any longer.

    The flywheel is not profitable enough with the material that I would use given in mind the small batch(es).

    I did the front carbon intake for the V6 airbox based on the first part of the R3 Maxi airbox and it was great.
    Lended it to Flacsi so he could copy it but never got it back.
     
  8. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    And I also made a carbon intake manifold. But it wasn't much better than my modified V6 airbox setup, but it was much louder so I went back to my initial setup.
    37b4b61ed9c589fa322760b336d9952f.jpg b1f332674a9138b4fb104f55189fe42b.jpg f6f676f9aeaab540ccdee2155177e1aa.jpg 8fa43df98d45399b63f3f03c770fc2dc.jpg 0bbb783a1ec18d67ab4abf2d396ba87d.jpg
     
    DS197 likes this.
  9. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    This proved to be the best setup for my car with the parts I had. aab608f8c4c580a22c01c0fcbd4c3ecd.jpg 05f9df4bf93816ca1b914dbca037ce90.jpg b957d612c532269e6253a456aeffed7e.jpg 4ae1f10f4fedc5298968d6761cbaf231.jpg ccee34cb6d07d58b1536f8ebbb56a809.jpg
     
    papa and trackspec197 like this.
  10. trackspec197

    trackspec197 Paid Member

    Messages:
    887
    Location:
    Worcester
    Car:
    Clio 197 BMW 320 M Sport
    The V6 air box gave me the best results too.
     
    papa likes this.
  11. Arch

    Arch Paid Member

    Messages:
    230
    Car:
    Clio 197
    As mentioned above 6kg is light for a flywheel. I know of one company in Aberdeen tha lighten and balance flywheels and have done many for Subaru and Evo guys this would probably be the most economic route given you won't be lightening that much anyway.
     
  12. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    IMHO, buy a lightweight flywheel or leave the stock one. Everything else is throwing money.
     
  13. Arch

    Arch Paid Member

    Messages:
    230
    Car:
    Clio 197
    So having a good condition standard flywheel lightened and balanced properly by a suitable Engineering company at a fraction of the price of an aftermarket lightened flywheel is wasting money, mmm let me think about that one
     
  14. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    If a 5% lighter stock flywheel is worth 1/3 price of the 34% lighter brand new aftermarket flywheel is OK to you...mmmmm...you should think harder.
     
  15. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    And I'll repost my post. Just in case you missed it.

    I wouldn't bother with the flywheel if it's not atleast 2kg lighter than stock.

    And TBH, better investment would be my lightweight crankshaft pulley that's 26-30% lighter than stock.

    That's just my 2 cents.
     
  16. Barney626

    Barney626 Winner - POTM December 2017 Paid Member

    Messages:
    527
    Location:
    Loughborough
    Car:
    Clio 197 - Nimbus
    Jesse-Pinkman-Breaking-Bad-Drinking-Water.gif
     
  17. Arch

    Arch Paid Member

    Messages:
    230
    Car:
    Clio 197
    I think I would be fitting a dampening crankshaft pulley like a fluid damper rather than a lightened one, there is lots of data showing vibrations in the crank at high revs caused by lightened crank pulleys on medium to long length cranks.
     
  18. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    I agree - only of they made a Fluid Damper for our cars.
     
  19. duck.co.za

    duck.co.za Paid Member

    Messages:
    81
    Location:
    Cape town
    Car:
    Ferrari 308 , BMW Xline X3 , Clio RS 200 20th anniversary
    This whole weight thing is only half the story . It's got to do with rotational inertia . The more mass you can remove further from the center the better . The pic I think you posted shows the machined slots on the outer edge , which is exactly where you want to remove the mass . The 300g you talk about needs to be accelerated right at the outer edge of the flywheel . I'm surprised you didn't get a notable improvement . 42081fbb988788d93774eb3b709d3624.jpg
     
  20. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,223
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    I agree with you.

    However, unfortunately for me, I haven't noticed any improvement with the lightened flywheel.

    This, however, is a whole different ball game. 4.4kg.

    This customer uses the lightweight flywheel in combination with my lightweight crankshaft pulley.

    bca7406e72d088a8c21b8b6d174b6648.jpg

    df1893e5f6401da57f34507dde8fd58a.jpg
     

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