512BB Fuse Blocks Dilemma | FerrariChat

512BB Fuse Blocks Dilemma

Discussion in 'Boxers/TR/M' started by samsaprunoff, Jul 28, 2006.

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  1. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,416
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Everyone,

    I was curious how many BB owners have the infamous melted fuse blocks? I ask this question, as I am in the process of fabricating an OEM replacement that maintains the existing fuse block covers and provides some improvements over the original design. I am doing this as:

    1. mine are melted (black one)
    2. the previous owner's fix of inline fuses looks nasty and
    3. he factory fuse blocks are NLA.

    I know that Birdman has a fuse block replacement (great job BTW), but these do not allow the original fuse block covers to be used. Since I would like a more OEM style replacement, I decided to design my own. Consequently, my design uses readily available Blade style fuses and allows the use of the fuse block covers. The only deviation from factory is the Blade style fuses and potentially the color of the actual fuse block (originals are either white or block, and mine will be clear). The color deviation was a cost decision, as it is easier for me to obtain clear as opposed to white or black. The design is much better than the factory one in that the fuse holders and wire connectors are actually soldered to a printed circuit board (PCB), as opposed to being copper rivetted through plastic. This PCB is then mounted to a CNC milled fuse base that allows for mounting and fuse cover attachment.

    Since I am already fabricating these for my own use (I am absorbing the PCB and CAD design costs) I can also make a few more for others who may be interested...hence the reason for this post. Since I am not interested in doing this as a business venture, I will price the blocks accordingly (help with the initial setup costs). Each block would be certainly less than $100USD and could be as low as $60. If there is sufficient interest, I may even change the design slightly so that it could accomodate even 308s, etc.

    Anyway, I will post pictures of the completed blocks in about 4-5 weeks (my various suppliers are on vacation).

    Cheers,

    Sam
     
  2. ferraripete

    ferraripete F1 World Champ

    i have replaced mine recently after meltdown. call daniel @ ricambi america as he may have interest in replacing or adding stock. btw, the application is similar and will replace the white or black fuse block...so you will have plenty of buyers.

    pcb
     
  3. samsaprunoff

    samsaprunoff F1 Rookie
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    Jun 8, 2004
    4,416
    Edmonton, AB Canada
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    Sam Saprunoff

    Good day Peter,

    Thanks for the info! Just out of curiousity, where did you find your replacement fuse block? I looked everywhere (Maranello Conc, All Ferrari Parts, Lyle Tanner, etc) including Ricambi to no avail... hence my desire/need to create a replacement.

    In regards to either application (white/black) there is both an electrical and physcial difference between the two. Electrically they are quite similar and so this will be accomodated by the actual printed circuit board (same PCB with different assemblies). Physically, the blocks are the same size, etc but have different keying widths to accomodate the different fuse block covers (i.e. the fuse block cover for the black fuse block cannot be used with the white fuse block). I can design the block to accomodate either cover which makes the initial setup cost less (only one block to design and setup). The only caveat to this is that one can accidently interchange the two covers... which is not critical, but may confuse the operator with fuse identification. I guess I will see if there is enough interest and if so then I will design both styles of blocks.

    Cheers,

    Sam
     
  4. boxerman

    boxerman F1 World Champ
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    May 27, 2004
    19,557
    FL
    Full Name:
    Sean
    I have not melted yet, but would be interested in doing it as a preventative measure.
     
  5. ferraripete

    ferraripete F1 World Champ

    sam ,

    call daniel @ ricambi america. he has an extra that he ordered for me in the event that the 308 blocks did not work. i change out the right side block as you see it while sitting in the boxer passenger seat . the car is not in front of me however i think it is the white block on my bbi.

    i think the block from the 308 had 2 extra male fittings that were simply not used.

    daniel is a sponsor of this site so you can find his phone number among the advertisers.

    tell him i sent you as he is familiar with my car.

    pcb
     
  6. ferraripete

    ferraripete F1 World Champ

    sean, bill pollard told me, not if but when!
     
  7. Dave Bendl

    Dave Bendl Formula Junior

    Dec 7, 2003
    804
    Chicagoland
    Full Name:
    Dave Bendl
    #7 Dave Bendl, Jul 28, 2006
    Last edited by a moderator: Sep 7, 2017
    To prevent this problem on my Boxer, I removed the fuse blocks from the car, cleaned all the terminals, and soldered the tabs to the rivets (see attached photo). Also did the buss bars on the back side. I am also using Buss AGC-8 & AGC-16 glass fuses. There is one installed in the picture. These fuses have pointed chrome tips and are the same length as the stock ceramic ones. Things seem to be a bit cooler now in the fuse area.

    The original fuel pump block was a disaster waiting to happen, so I installed a new one.
    Dave
    Image Unavailable, Please Login
     
  8. samsaprunoff

    samsaprunoff F1 Rookie
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    Jun 8, 2004
    4,416
    Edmonton, AB Canada
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    Sam Saprunoff
    Good day Peter,

    Interestingly, I spoke with Daniel a few weeks ago and he did mention that he had a hell of a time sourcing a fuse block for a customer... perhaps this was for you? Sadly, he said that he does not have any more blocks available.

    I could probably find a used 308 fuse block and modify it for my needs, but the melting issue would occur again...hence my decision to design a new fuse block.

    Cheers,

    Sam
     
  9. samsaprunoff

    samsaprunoff F1 Rookie
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    Jun 8, 2004
    4,416
    Edmonton, AB Canada
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    Sam Saprunoff

    Good day Dave,

    I am not trying to be forward, but your blocks look great :) . I would have done the same procedure to mine if they were not melted. Kudos to you for finding a superior fuse replacement! Those fuses will be significantly better than the old bullet style.

    BTW your old exhaust works great! It took a bit to make it fit, but it certainly sounds mean!

    Cheers,

    Sam
     
  10. boxerman

    boxerman F1 World Champ
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    May 27, 2004
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    FL
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    Sean
    Yeah and it seems we can say the same about variousa tranny bits too.
     
  11. Arvin Grajau

    Arvin Grajau Seven Time F1 World Champ

    Jun 7, 2006
    78,321
    Wurundjeri man.
    Full Name:
    Arvin Grajau
    Hi guys,twice in 18 months,last lot new as per 308 model.
     
  12. ferraripete

    ferraripete F1 World Champ

    ugh! bill knows of my pain on that as well! i hope my boxer reapair luck begins to change for the better!
     

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