Boxer and 308 Fuse Block Upgrade | FerrariChat

Boxer and 308 Fuse Block Upgrade

Discussion in 'Technical Q&A' started by samsaprunoff, Feb 25, 2007.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day all,

    This is a cross post to a thread I started in the Boxer section:

    http://www.ferrarichat.com/forum/showthread.php?p=136497064&posted=1#post136497064

    Basically, I have designed a new type of Fuse Block that is a direct replacement for the BB, BBi, and 308 series of cars (sadly, not the Mondial). It is a total new design that addresses all of the issues of the factory blocks, but also allows for the usage of the newer (and easier to find) blade style fuses and maintains the ability to use the existing fuse block covers.

    I am building a few for myself and a few friends and so I wanted to see who else might be interested so that I can determine how many I need to have built. Please take a look at the above thread and if you are interested please send me a PM or respond to the above thread.

    I will post some pics of the blocks once I get my prototypes done... which should be in about 5 weeks.

    Cheers,

    Sam
     
  2. Zertec

    Zertec Formula 3

    Oct 5, 2004
    1,335
    Singapore
    Full Name:
    Clive Reed
  3. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Clive,

    Did you actually read my post? My design is dramatically different in that it uses modern blade style fuses and maintains the use of the existing fuse block covers...Two items that Birdman's design does not address...

    Cheers,
    Sam
     
  4. Zertec

    Zertec Formula 3

    Oct 5, 2004
    1,335
    Singapore
    Full Name:
    Clive Reed
    Sorry, I thought they were similar upgrades. My apologies.
     
  5. BigAl

    BigAl F1 Veteran

    Mar 17, 2002
    6,146
    TX
    Full Name:
    GSgt Hartman
    have a price range in mind Sam? i'm interested.
     
  6. tvine

    tvine Formula Junior

    Jul 19, 2006
    270
    Cadillac, Michigan
    Full Name:
    Tom Vine
    I am interested as well. I would like to keep the stock covers.
     
  7. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Clive,

    No worries! I am at least glad that my thread has provoked some interest :)

    Cheers,

    Sam
     
  8. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day BigAl,

    The price will not exceed $300 US + shipping for a complete set (one white and one black fuse block). I am hoping to recover the setup and tooling costs and so if I have enough interest, the price could be lower. If the interest is really high, then I can move from a CNC (read this as costly) machined base to an injected mold base which would reduce the cost dramatically (to about $150 to $200 for a set).

    Cheers,
    Sam
     
  9. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day All,

    Just to let everyone know, all those who are potentially interested in the fuse blocks need to let me know by Thursday March 1. After that time, I will not be in a position to provide any more fuse blocks other than to those who have previously expressed interest.

    Cheers,

    Sam
     
  10. Bob308GTS

    Bob308GTS Formula 3

    Sep 26, 2001
    1,150
    Aurora,IL
    Full Name:
    Bob Campen
    Put me down as interested
     
  11. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good evening everyone,

    For those that have not been following this thread in the Boxer section, I have posted some test results of the original fuse block here:

    http://www.ferrarichat.com/forum/showthread.php?p=136563619#post136563619

    The results of which are a fairly good representation as to the issues of these fuse blocks. Given the high temperatures I recorded on my original blocks, I would encourage all those who have these type of blocks to inspect, repair (the high current circuits for sure), or replace them as necessary. They are a problem just waiting to happen.

    Cheers,

    Sam
     
  12. BigAl

    BigAl F1 Veteran

    Mar 17, 2002
    6,146
    TX
    Full Name:
    GSgt Hartman
    thnx for the update here Sam, I hadn't been following the other thread. The blocks look well done, interesting testing results.
     
  13. tvine

    tvine Formula Junior

    Jul 19, 2006
    270
    Cadillac, Michigan
    Full Name:
    Tom Vine
    As I said before I am interested.
     
  14. BigTex

    BigTex Seven Time F1 World Champ
    Owner Rossa Subscribed

    Dec 6, 2002
    79,406
    Houston, Texas
    Full Name:
    Bubba
    Nice work!!!!

    Looks great!

    That is the failure mode of the OEM blocks......the base melts and the geometry of the fuse holder goes South.......
     
  15. miketuason

    miketuason F1 World Champ
    Owner Silver Subscribed

    Feb 24, 2006
    15,832
    Cerritos, CA.
    Full Name:
    Mike
    Sam if you could can you post pic of your prototype or a finish product if possible? thanks.

    Mike
     
  16. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day BigAl and BigTex,
    (looks like its true, everything is big in Texas :) )

    Thanks for the Kudos!

    Cheers,

    Sam
     
  17. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Mike,

    Pictures are posted in the Boxer section thread. The bases are roughly (hand) milled prototypes of what the final ones will look like (proto is made from grey PVC). The bases will hopefully be milled from ABS so that I can have both a black and white base... Distinguishing colors like the originals. The issue is the local ABS's availability what min purchase quantity I will be held to. The worst case will be Acrylic (which is readily available). Since Acrylic has no inherent color, the color of the PCBs will distinguish the blocks (again see pics in the boxer section thread).

    Cheers,

    Sam
     
  18. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Tom,

    You are on the list!

    Cheers,

    Sam
     
  19. 78-308gt4

    78-308gt4 Formula Junior

    May 22, 2005
    735
    Memphis, TN
    interested party. Let me know if there are any left...
     
  20. Paul_308

    Paul_308 Formula 3

    Mar 12, 2004
    2,345
    The Ferrari 308 series fuse blocks rely upon 2 pieces of metal being pressed together to maintain electric contact. Mechanical pressure is provided by a rivet but unfortunately plastic is used in the fastener system. As the plastic degrades, the contact pressure lessens and the electrical resistance increases to the point where heat is produced and the plastic degrades even faster.

    American cartridge SFE/AGC fuses are no more reliable than Euro GBC fuses which came with the car but the edge goes to modern ATO for contact reliability.
    Now then, ...

    Two compact ATO/ATC 10 place fuse blocks fit easily into the present 9 place (x2) fuse blocks in the 308 series cars and provide two sorely needed spare fuse circuits. AND A PAIR IS UNDER $28 !!

    The fuse blocks I use are not Mini-Ato but full ATO with currents up to 15A each position. Fuse block input connection is easily accomplished by bridging the top contacts where needed by soldering a bus or making bridge loops. Multiple output accomplished with double male-female connectors. Although not especially needed, the fuseblocks have waterproof clear plastic covers.

    As an electronics engineer who has worked in the area of contact physics and power disrtibution I've tried sticking to facts but recognize toes might get stepped on. Me? I'd rather have a modern factory type upgrade and use my spare dollars for gasoline
     
  21. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Paul_308,

    In regards to your comment:

    What is your point here? Have you read the thread in the Boxer section? If you would take some time and read the thread, you will see what I am trying to achieve:

    a. Addressed the design issues of original ones
    b. Use modern Blade fuses... ATC not mini-ATC
    c. looked OEM (i.e. shape and color -Black/White)
    d. maintained the use of the factory fuse block covers

    Sadly off the shelf solutions did not address (c) or (d) and so the only approach was to design up a set accordingly. Can you make something to work cheaper? Absolutely, but not everyone has the time, tools, experience, etc to modify some off the shelf blocks to work. Further, there are some of us that would like to have a modern solution that looks OEM and uses the original fuse block covers.

    Perhaps if you wish to be more constructive, why don't you take the time and effort and document the procedure/parts of how to create fuse blocks using an off the shelf solution (I am sure that there would be a lot of people who would be grateful)?... instead of being somewhat negative towards the solution I present?

    Cheers,

    Sam
     
  22. Paul_308

    Paul_308 Formula 3

    Mar 12, 2004
    2,345
    Mornin' Sam. No point or adjenda, no startup venture, no need for another building with my name on the plaque. Just additional facts for those looking for lower cost and better cost/value ratio solution. And yep, read the initial and replies. Good to see fine minds working constructively. Oh yes, must correcting one false assumption that cartridge fuses have better contact than ATO because of greater area. Were the inner & outer parts machined it could be true but in practice stamped parts don't conform perfectly because inner and outer elements have different radii plus stamped parts lack the concentricity for near perfect contact plus they lack consistant spring holding pressure. Good contact but not good as ATO but really not an issue. In fact end-tip GBC fuses can theoretically beat them all in conductivity by using a very high pressure on the tips. But that's a paper tiger not met in practice. I reject GBC fuses because its fuse element isn't physically protected against snagging damage, not because a short gone wild will drop down and burn off her panyhose, although that brings to mind visions of another product. Some applications use clear tubing around the fuse because of that shortcomming.

    (c)...true no white is availaabler. (d) they do meet my envision of D.
    Firstly, mini-ATO are off the table as current range is inadequate.

    I commend your goals and efforts but they aren't universal. Others like myself feel since deep recess covered areas of an un-concoursed car will not be seen by friends, goals C and D have no value outside personal gratification and simple reliability remains the primary issue.

    Please help me understand your emphasis on black/white colors. It was used at the Ferrari factory to solve a problem of incorrect installation errors. Documnetation thereafter refered to sinster/dextra (left/right) for maintenance, not black/white.

    My car doesn't have a 'factory fuse block cover' but my newbie fuse block does so I so I can't assess emphasis on an OEM cover. I have placed a fuse chart posted on the rear (backside) of my removeable dash element in large enough print so reading glasses are unnecessary.
    Sorry Sam, my plate is full...the problem-don't get retired, the girlfriends double, the do-to list triples, and the doctor trips eat up any remaining time. Perhaps I'll post pictures someday. I have circuit board facility here for silkscreen etch and drill but lack through hole plating. That would be a jazzy fuse block for perhaps $50 but I don't take people on tours of my dash. Since I having an incredibly sexy rewire of my headlights and turn/parking lights I might should reconsider.
    So, Sam...keep those steel-toed shoes on and my ideas won't sound like a personal challenge to your manhood.

    My installation was so quick and simple didn't feel it need for pictures. Just need to relocate a set of mounting screws, no mod to the blocks.
    Don't get sensitive Sam, your mama still thinks your great. (but she does dress you funny)
     
  23. ria

    ria Formula Junior

    Nov 2, 2003
    732
    ohio
    Full Name:
    phill
    sam has proof of his fuse blocks. were is yours?
     
  24. samsaprunoff

    samsaprunoff F1 Rookie
    Silver Subscribed

    Jun 8, 2004
    4,475
    Edmonton, AB Canada
    Full Name:
    Sam Saprunoff
    Good day Paul,

    Thank you for the information.

    Great, you do not want to use the original covers... Some of us do. Does having the factory covers improve the overall electrics of the car? No, but the desire is to try to maintain originality. You may not have that desire, but myself and a few others do.

    Again, it is a desire to try to have a solution that mimics the original look and does what the factory originally wanted... differentiation between left and right blocks.

    As I said earlier....Great, you do not want to use the factory covers.

    Your plate may be full, but you find the time to criticize others who spend their time and effort trying to provide solutions/assistance to others.

    Constructive comments and alternate solutions are always welcome. Some may repair their own, use inline fuses, use aftermarket blocks, or even purchase my or Birdman's blocks. Ultimately, fuseblock owners are going to do what they feel is best.

    Why is it that you feel the need to personally slight me? My response to your original post was that your solution did not address some of the design objectives I, and few others, wanted? I then suggested that instead of being negative of my solution, invest the time and effort to help others that may not be as resourceful as you. Perhaps you take offence to that? What ever the case, you win! How can I respond to that?... I guess I will just go back to my mama and ask her to buy me some steel toed shoes...

    Cheers,

    Sam
     
  25. JTR

    JTR Formula 3
    Owner

    Apr 26, 2005
    1,502
    in a house
    Full Name:
    John
    Don't sweat the guy Sam. He's just flapping his lips!
    John
     

Share This Page