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-   -   ford mini starter amperage draw (http://www.clubcobra.com/forums/small-block-talk/119633-ford-mini-starter-amperage-draw.html)

vector1 03-13-2013 06:12 PM
ford mini starter amperage draw
 
anybody know the amp draw of a ford mini starter for something like a sbf, there are no markings on the starter and i can't find it on the internet, and i am just looking to get an idea if i was to run a parallel type fuse in the battery cable. thanks.

patrickt 03-13-2013 08:28 PM
Quote:
Originally Posted by vector1 (Post 1235335)
anybody know the amp draw of a ford mini starter for something like a sbf, there are no markings on the starter and i can't find it on the internet, and i am just looking to get an idea if i was to run a parallel type fuse in the battery cable. thanks.
I have the old-style OEM FE starter, but I can tell you specifically what it draws. See: http://www.clubcobra.com/forums/all-...breaker-2.html for a pic and details, but the long and the short of it is that it draws over 900 amps peak surge. Yep, 900 amps -- and over 200 on the constant crank.%/

Dwight 03-13-2013 08:43 PM
never hear of anyone fusing the battery / starter cable.
most of us install a shut off switch.




Dwight

vector1 03-14-2013 02:33 AM
i have a switch, or had a switch. it was a pos longacre with the handle wabble and was only rated for 150 amps, so another is on the way. looking through a nice new electrical book and the guy wired two 200 amp resettable breakers in parallel prior to the switch so i was thinking about something like this, and wondering how many amps the starter does pull. the breakers also had valet mode, so you could disable everything from there also.

i figured allow for at least 250 amps, that is what one of the smaller advertised tilton starters was advertised at. 935 amp surge is a pretty good jolt.

olddog 03-14-2013 12:52 PM
The inrush current when the starter motor is first engaged is everything the battery can supply. If you have a 1000 amp battery it will pull all 1000 amp.

Once at steady state, turning the engine over, if it takes 5 Hp to spin the engine, it will pull over 300 amp. On a warm day, it may be less on cold day it can be much more.

The factory does not fuse the starter, for a reason. The battery is what limits the current. Your headed down a road of trying to improve something that needs no improvement. Your just going to cause yourself a heap of trouble for no good reason.

The switch you had was not up to the task. Either eliminate it or get one that is up to the task.


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