I installed battery cutoff switch obtained from the local marine
equipment supply store. It is very heavy-duty, works nicely, and
includes a removable red "key" that helps ensure security. I also added
a small toggle switch on the battery cutoff mounting plate that grounds
the distributor security wire.
No. It does not look original. However, it fits perfectly in the
original's place. It has very low voltage drop when cranking the starter
motor.
Alex in Maine
1960 BT7
On 5/15/2018 3:06 PM, ggilliam at usol.com wrote:
>
> Bob.
>
> ?Another item you didn't consider are the contacts in the battery
> disconnect switch. I know with mine I have to sometimes fiddle around
> with it to make good enough contact to run the starter well. Don't
> know if the current available replacements are satisfactory.
>
> Regards,
>
> ?Gordy
>
> Longbridge BN4, with left side door lock
>
> On 2018-05-15 10:30, Bob Spidell wrote:
>
>> There's several variables to consider:
>>
>> - Later 6-cyl cars have the battery in the boot.? That's a long cable
>> run to the starter solenoid; the cables and terminals need to be in
>> good nick.
>>
>> - Ditto the starter.? The field coils in starters build up resistance
>> over time and, eventually, the starter won't crank as well, putting
>> even more load on the battery.? After a couple cranks, the field
>> coils get warm and the resistance builds up and, of course, the
>> battery's reserve gets depleted.
>>
>> - The higher the compression in your engine, the harder it is to turn
>> over.
>>
>> - Thicker oil, like 20W-50 can bog an engine down a bit.
>>
>> The more CCA you have, the more margin to start an engine, esp. on a
>> cold day (that's why CCA is the nominal stat for batteries).? My
>> Healeys are harder to start after they've been sitting for more than
>> a few days.? The 500CCA number I gave was a SWAG; I haven't seen any
>> full-size auto battery with less than that anyway.? We got a battery
>> for my dad's '65 Mustang 289 with 550CCA from Autozone; Costco didn't
>> sell the size we needed.? It cranks the V8 OK.
>>
>> FWIW, when I rebuilt my BJ8's engine the (previously) satisfactory
>> wet cell battery I had wouldn't even turn the engine over (later
>> compression checks showed 180PSI +/- in all 6).? I had the starter
>> rebuilt and installed an 800CCA AGM battery.? The starter actually
>> startled me the first time I cranked it; it's nearly as fast as the
>> geared starter in my Mustang.
>>
>> TLDR; The more the better.
>>
>> Bob
>>
>> On 5/14/2018 10:12 PM, John Spaur wrote:
>>>
>>> So... wise ones (and I mean that sincerely)
>>>
>>> My current battery is an Intimidator rated at 775. Bob S. mentioned
>>> in a post about a minimum of 500.
>>>
>>> How many CCA's should a battery have for a Healey engine?
>>>
>>> TIA
>>>
>>> John Spaur
>>>
>>> San Jose
>>>
>>
>>
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>
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