355 Subframe, What filler rod for welding? | FerrariChat
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355 Subframe, What filler rod for welding?

Discussion in 'Technical Q&A' started by Mr Dobermann, Dec 15, 2008.

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  1. Mr Dobermann

    Mr Dobermann Karting

    Jul 31, 2005
    162
    #1 Mr Dobermann, Dec 15, 2008
    Is this subframe made of a aluminium/magnesium blend? It is definetely not weldable with Aluminium filler rods(TIG), so anyone welded it with Magnesium filler rods?

    Or what is usable here?

    Anyone who really knows this - Thankful for quick advice.

    K /// Sweden.
     
  2. zero

    zero Guest

    Apr 24, 2007
    776
    #2 zero, Dec 15, 2008
    Are you talking about the subframe that holds the engine? The section that unbolts from the car when its removed with the engine? If so its made from mild steel bud.
     
  3. Mr Dobermann

    Mr Dobermann Karting

    Jul 31, 2005
    162
    #3 Mr Dobermann, Dec 15, 2008
    Yes, the engine carrier...

    Steel? No way. It can not be... My welder says its some Magnesiumblend...

    ?

    K /// Sweden.
     
  4. zero

    zero Guest

    Apr 24, 2007
    776
    #4 zero, Dec 15, 2008
    Yes it is mate;) Welded the underside of one myself only last week, using a mig welder. In Europe because the climate is so wet, the underside rear sections can rust through.
     
  5. Mr Dobermann

    Mr Dobermann Karting

    Jul 31, 2005
    162
    #5 Mr Dobermann, Dec 15, 2008
    Whatta F.....ck :(

    Im heading to the welder right now...

    Zero, Thank you.

    K/Sweden.
     
  6. zero

    zero Guest

    Apr 24, 2007
    776
    #6 zero, Dec 15, 2008
    May i suggest taking a base ball bat with a nail in the end of it:D
     
  7. Mr Dobermann

    Mr Dobermann Karting

    Jul 31, 2005
    162
    #7 Mr Dobermann, Dec 15, 2008
    How the hell can the enginecarrier/subframe be so light, and made of steel?

    Those pipewalls can not be especially thick...

    K /// Sweden.
     
  8. Motob

    Motob Formula 3
    Professional Ferrari Technician

    Nov 11, 2003
    2,389
    Frederick, Maryland
    Full Name:
    Brian Brown
    #8 Motob, Dec 15, 2008
    Get your magnet out and check it. It is just mild steel. How can anyone that calls himself a welder not know the difference between steel and aluminum?
     
  9. KKRace

    KKRace Formula 3

    Aug 6, 2007
    1,052
    Rockville/Olney MD
    Full Name:
    Kevin
    #9 KKRace, Dec 15, 2008
    I wonder what kind of mess he's made of your subframe trying to weld mild steel with Aluminum filler rod? If I didn't realize it before I started welding I think I would see the steel starting to glow when you heat it witht the TIG vs the mercury appearence of the Aluminum when it starts to melt? Might be a good time to look for another welder. I've found racecar fabricators are more qualified to do this sort of work than your average welding shop that tends to do more structural work and steel repairs. I'm surprized Ferrari isn't using 4130 crome molley steel instead of mild steel? If it's .125" or less in wall thickness you can get away with using mild steel filler.
     
  10. UConn Husky

    UConn Husky F1 Rookie

    Nov 11, 2006
    4,425
    CT
    Full Name:
    Jay
    #10 UConn Husky, Dec 15, 2008
    Wow...good luck. and bring the big magnet, see if it sticks to the welder's head
     
  11. tbakowsky

    tbakowsky Two Time F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    20,034
    The Cold North
    Full Name:
    Tom
    #11 tbakowsky, Dec 15, 2008
    7014 weld rod ought to do it
     
  12. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,232
    Mount Isa, Australia
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    Pap
    #12 PAP 348, Dec 15, 2008
    What drugs is he on!! :eek::eek:
     
  13. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
    Full Name:
    Tim Keseluk
    #13 2NA, Dec 15, 2008
    LOL
     
  14. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,252
    socal
    #14 fatbillybob, Dec 15, 2008
    Use ER70S-2 TIG welding rod and it is steel. You can use E71T-11 fluxcore MIG that works great on dirty steel and places hard to get clear access.
     

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