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Thread: Batteries for a 71 911T

  1. 05-10-2021, 09:11 AM #1
    71-911T
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    Batteries for a 71 911T

    I started a thread on the Interstate U911's which are discontinued.In one of the threads a member stated that the Interstate
    MTP67R/MTP-T4 fits.Can anyone confirm this 100% without any modifications.

    Thanks inadvance David
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  2. 05-11-2021, 01:23 AM #2
    Beisentrout
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    Quote Originally Posted by 71-911T View Post
    I started a thread on the Interstate U911's which are discontinued.In one of the threads a member stated that the Interstate
    MTP67R/MTP-T4 fits.Can anyone confirm this 100% without any modifications.

    Thanks inadvance David
    I put two Interstate MTP-T4 batteries in my 1970 a couple months ago. There is a flange around the bottom that needed trimming to fit in my battery boxes (which might be deformed due to accident damage), the original tiedowns hold them in place nicely. and there is room for the rubber cover over the positive terminal.

    BruceE.
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  3. 05-11-2021, 06:11 AM #3
    NorthernThrux
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    Good to know there are options. At least here in Canada, the Sonnenschein is slightly cheaper than the Interstate. It does look like the side flanges on the bottom need trimming on the Interstate. They aren't present on the Sonnenschein, but the front and top of the cases look identical.
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  4. 05-11-2021, 10:26 AM #4
    RSTarga
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    I just ordered a couple of Sonnenschein @ $185 each. looks like they are quite a bit more than in Canada, wonder why.
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs
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  5. 05-11-2021, 11:07 AM #5
    Jones
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    Quote Originally Posted by RSTarga View Post
    I just ordered a couple of Sonnenschein @ $185 each. looks like they are quite a bit more than in Canada, wonder why.
    Because everything is more expensive in Canada!
    Cheers,

    Jones...
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  6. 05-11-2021, 11:09 AM #6
    NorthernThrux
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    Yes, pleasantly surprised that they were cheaper in Canada. But so are new Porsches when you convert into USD.
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  7. 05-18-2021, 07:26 AM #7
    zenithblue71T
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    Just bought two Bosch batteries for $90 each from the local Bosch service center. They were in stock too.

    Name: 2631BA72-7410-46B5-B5EF-1D053F03E6AD.jpg Views: 470 Size: 121.8 KB
    Last edited by zenithblue71T; 05-19-2021 at 01:23 PM.
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  8. 05-18-2021, 12:09 PM #8
    RSTarga
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    Quote Originally Posted by zenithblue71T View Post
    Just bought two Bosch batteries from the local Bosch service center. They were in stock too.

    Attachment 551436

    Attachment 551463
    Do those fit well? Miata size?
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs
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  9. 05-19-2021, 01:16 PM #9
    zenithblue71T
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    Yes, these Bosch batteries fit perfectly without any issue. Also fixed a weird starting hesitation I had.
    James Hurst #1638
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    911T with 2.2S Ps and Cs, Solex grind Cams and PMO 40mm
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  10. 05-19-2021, 02:28 PM #10
    Arne
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    Unfortunately, that Bosch battery does not appear to be available in the US.
    - Arne
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