Core size of starter motor Cable

[NevDyson]

POBC what is the smallest core diameter for the starter cable I could safely get away with? I was thinking thishere (second item down).

 

Engine being 2.0 l zetec, powervamp PVR25 battery.

 

 

[Brian Soper]

I used a Unipren 70 ( special aircraft spec cable ) on my Lotus 51 no problems front battery rear engine and no problems but it does not have cold frosty mornings or damp conditions to contend with so the answer will always use the biggest cable you can for less resistance and easier starting in adverse conditions . Battery performance is also temperture dependant as well so with thick oil and damp mornings you need evey amp for cranking

 

Brian

L7 S2 , S4 & 51

[Peter Carmichael]

16 will be fine as long as the wiring is reasonably direct and corrosion free. Just think about it if you are, say, cranking for 20s for oil pressure. 25mm is the next commonly used size up from 16 and covers most eventualities.

 

 

[Pete-B]

Just checked mine on the car it says 20mm

 

Peter

[EFA]

I've used 40mm² on my kit car, but the starter is 4.1m from the battery.

 

 

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