Larger Battery

[c5martin]

I would like to fit a larger battery to my Marlin.
Any suggestions would be useful as there dose not seem to be a lot of room.
Has original Cortina type car battery with square posts.

[listerjp2]

Hi Martin

A lot of the other kit car producers are now extolling the virtues of High boost bike batteries.

I am looking at this option for myself.

Adrian

[CosworthCabrioLee]

Hi Martin on the Berlinetta's I have owned is move the battery into the boot, as the location of the battery in a Berli is to tight for a decent battery, and they get rather hot in there also. It is not a big job to move it but you need around 3.5m cable.
Regards
Lee

[c5martin]

Thanks to Adrian and Lee for the information.
I will look at a higher capacity battery of the same size.
I had considered extending battery cable to enable battery to be fitted elsewhere but was concerned about voltage drop to starter.
I find that before engaging the starter motor that battery voltage in the morning is 12.25v.
On a cold day we some times struggle to turn the engine.
My marlin is fitted with a 1.6 which I have been told are higher compression ratio than larger ones which is why you need a higher capacity battery.
I don't know if this is true?

[listerjp2]

Hi Again

Looking at what Westfield etc. use, try this link.

They apparently recover quickly and produce their full output throughout the starting cycle.

https://www.europaspares.com/product/0/14660/ODYSSEY_BATTERY___CRANKING_AMPS_625___PC625_.html

Adrian

[CosworthCabrioLee]

Hi Martin you should not get any volts drop just make sure the ends a crimped well, then go out and but around a 550 cold cranking capacity battery and your troubles will be over.
Regards
Lee

[Dane_Rescueman]

Hi, I kept the original battery mounting and position but bought a good quality battery, as described above, of around 550A cranking capacity. To preserve the life of this battery I discarded the old Lucas alternator and replaced this with a Sierra 75A alternator. So far so good. There are quite a few of these Bosch or Motorola alternators in breakers yards so you should find a serviceable item.


(2.2 litre Vulcan Pinto, High compression head)

[c5martin]

I have a new 45Amp plus alternator fitted.
Battery fitted is a Numax type 85 12v 43Ah 360A cranking capacity.
L = 210mm, W = 175mm, H = 175mm.
I have been looking for a battery with higher cranking capacity that would fit.