Can anyone tell me wot battery I need for my fug? Came with a knackered one from something else and not sure how to tell wot one to buy. Previous owner said he kept blowing coils...... is that to do with battery size? Do I need 12 or 6 volt please................. thankyou in advance

crunch

if the previous owner kept blowing coils there is definately a fault somewhere in the ignition system that caused this possibly wrong parts or dodgy wiring.

you'd almost certainly need a 12v battery unless you have an early vw engine or a bike engine. the size of the battery (measured in ah or amp hours) would be dictated by the size of the engine you put in B)

Common cause for coils to go is nacked condenser and/or nacked/closed points.

check dynamo/alternator for voltage. the rest you can change by youself...

like the lights, the ignition coil, the lights and the lights, and.... is there need anymore on a fug ??? :rolleyes:


45ah till 55 ah is enough.
biggest electronic user is your starter (2secs) and then only some lightning and ignition and elec-fuel pump.



unless you're going to install a fridge...

From past expeirence,batteries are pretty interchangable. There's thousands of people who just stick on which ever battery they can get hold of that fits the tray, and generally get away with it. You'd need to be massively out to get a problem on a relatively small engine. Starter and system won't take more power than it needs. My 2ltr starts perfectly on the Fiesta battery i'm using till i buy a dry cell. Still like the other guys said,it's not the battery. Don't think you can start cooking bits unless it's a wiring fault or you change voltage.

Hi Crunch, how's the coil mounted? When I got my Fug it was fitted with a Bosch 'blue' coil fitted upside down to keep water off the contacts, problem is they are oil filled for cooling, mount them much off vertical and they'll cook...easy one to check.

Indeed, a battery of to smaller capacity will get a hammering and it's life will be reduced, one of large capacity (apart from costing more and being heavier) has no downside, only have a longer life and have plenty more in reserve if you ever need it (lots of cranking, long time with headlights on and engine not running)

FWIW all bikes (apart from the odd 50and 100 cc use 12V electrics) - so are quite happy with a car battery.

While charging (above tickover without particularly heavy electrical load) the battery voltage should be above 13.5V (or it will charge very slowly) but not more that 14V or it will heat up and boil off the electrolyte (acid).
Nominally they are stated to be at 13.8V

Hope it helps.

Steve (Electronic engineer by trade)

Oh and if it's just coils that get eaten, it could be that there should be a "ballast" resistor in series (inline with one of the wires to the coil)
Without this, the coil will draw excessive power at low revs and therefore get pretty hot.

Steve

Cool, i spy a new word of the day ;) ......