Interstate MTP-91 too long for 360? | FerrariChat
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Interstate MTP-91 too long for 360?

Discussion in '360/430' started by RNorth, Nov 5, 2011.

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  1. RNorth

    RNorth Rookie

    May 11, 2010
    4
    #1 RNorth, Nov 5, 2011
    I'm replacing the battery in my 2004 Ferrari 360 spider for the first time, after 7-1/2 years. (Battery Tender trickle chargers are remarkable!) There are numerous recommendations for the Interstate MTP-91 on this site, among others; but no one mentions the following potential problem:

    The length of the MTP-91 is listed at 11-3/8" but I just discovered, on removing the old battery, that my battery tray is only 11-1/8" long. If the upper part of the battery is 11-3/8, no problem, but if that is the length of the bottom, it won't fit without modification. Should I look for a different battery?


    Thanks!

    Rick North
     
  2. cdog1

    cdog1 Rookie

    Apr 2, 2011
    27
    jim thorpe,pocono's
    Full Name:
    chris Simeone
    #2 cdog1, Nov 5, 2011
    just put one in my 360 no problem,
     
  3. Ice9

    Ice9 Formula Junior

    Jun 22, 2004
    395
    San Francisco, CA
    Full Name:
    Ice9
    #3 Ice9, Nov 5, 2011
    I just replaced mine today and the MTP-91 is not the correct battery from a fit perspective -- its a tight fit in there.

    If you search the forums more closely you will find that this common problem can be solved by fitting the Interstate MTP-H6 (also called MTP-48-H6) instead of the 91. I purchased one today for $150 and it has an 85 month warranty with full replacement within the first 2 years. They also sell a gel version called the H6A if that's your preference. If not, remember to vent the compartment correctly.

    Hope this helps.

    -ICE9
     
  4. Need4Spd

    Need4Spd F1 Veteran

    Feb 24, 2007
    6,678
    Silicon Valley
    #4 Need4Spd, Nov 5, 2011
    I have a MTP-91, fitted by the prior owner. It fits, but barely. When it's my turn to replace the battery, I will get the gel version of the smaller battery noted above, or an Odyssey. The problem with wet cells is that they can leak, and if they do, it's much worse to clean it up on Ferrari 360s/430s because they're inside the car.
     
  5. F456 V12

    F456 V12 F1 Veteran
    Silver Subscribed

    Mar 13, 2004
    5,278
    Coto de Caza
    Full Name:
    Christian
    #5 F456 V12, Nov 6, 2011
    Had a Interstate when I bought the car, replaced it a few years later with an Odyssey PC925 - big mistake - just installed a MTP-91, no issues installing and performance is strong

    MB

    PS, I keep the car on a tender
     

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