RS Motorsport :: Classic Speed Restored

Posted: **Tue Dec 22, 2009 9:04 pm**

Most articles i've read on installing battery in boot recommend using circuit protection - but guess not needed if careful with installation/insulation.
Found this article

http://autospeed.com.au/cms/A_110776/article.html

uses a c/b from jaycar which is supposedly good for 150amp for 10 secs
I'm interested in any comments

Cheers Gregg

Posted: **Tue Dec 22, 2009 9:32 pm**

Posted: **Tue Dec 22, 2009 9:35 pm**

Posted: **Tue Dec 22, 2009 9:52 pm**

.............watts
amps = ____
............ Volts

Depending on watt starter u have

1400
____
12 = 117 AMPS

or

750
___
12 = 62.5 AMPS

IMHO the biggest killer will be the joints. which are easy to find via temperature.

Posted: **Wed Dec 23, 2009 12:52 pm**

Issue wull be starter current, and whether the engine fires before exceeding the trip curve.

A trip curve is how much current vs time dispalyed in graph form.

150A for 10s might be, 200A instant trip, 100A for 20sec or 30A continuously.

I once measured an Escort bosch starter at about 250A.

Even at 150A you have a great big welder / plasma cutter just waiting to get going.

Posted: **Wed Dec 23, 2009 1:36 pm**

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RS Motorsport :: Classic Speed Restored

Battery in boot

Battery in boot