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PostPosted: Mon Jan 24, 2011 10:42 pm 
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1275cc
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Joined: Thu Aug 31, 2006 7:56 pm
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Location: Muswellbrook -- NSW
drmini in aust wrote:
550CCA Exide in mine. 8)


Yep,. same as Doc's, brought from Big W ,( $168 ) also have the same in my XR-6 and my turbo diesel Rodeo ute, for interchanging purposes. 3 yr warranty as well.


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PostPosted: Mon Jan 24, 2011 11:10 pm 
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1360cc
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Joined: Sat May 08, 2004 9:01 pm
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Location: Cairns, Nrth QLD
610CCA Delkor Calcium. Not AC Delco..... Delkor!

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PostPosted: Wed Jan 26, 2011 4:24 pm 
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Location: Adelaide
in the past i have bought bosch but supercrap have changed to century so i got the best one i could afford/that would fit

Century 68
520cca

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PostPosted: Wed Jan 26, 2011 5:41 pm 
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998cc
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Joined: Sat Mar 13, 2010 4:19 pm
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Location: Ridin' the rails somewhere
Morris 1100 -

CCA 270
RC 45

PO was a tight-arse it seems :lol:

Still a 40 yo donk doesn't need much to kick it over :twisted: Everything runs fine, but don't have any extras over the factory stuff. C40 dynamo but no dramas with charge even on high-beam with wipers on...

cheers

Jacob

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'72 Clubman Van - 1022cc, 295 head, 731 cam - Daily Driver :D
'69 Morris 1100 S - Dinged by a bus, in shed under repair
'64 Morris 1100 - Early 1100, long term project



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PostPosted: Wed Jan 26, 2011 6:11 pm 
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998cc
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Location: Hoppers Crossing
VulcanBB18 wrote:
Morris 1100 -

CCA 270
RC 45

PO was a tight-arse it seems :lol:



I think I have the smallest one, only 250CCA :oops:

And I bought it! :shock:

Needs replacing, went to Big W, prices look good for the high capacity Exide's.

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PostPosted: Wed Jan 26, 2011 10:06 pm 
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Joined: Wed Sep 08, 2004 9:27 pm
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Location: Wodonga - Vic/NSW border
this is worth reading

http://www.batterystuff.com/tutorial_battery.html


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PostPosted: Thu Jan 27, 2011 10:00 am 
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998cc
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Joined: Tue Apr 28, 2009 12:20 pm
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Location: Adelaide
Simon, that link is VERY good - thankyou so much for posting - I've printed that out and it will go into my big book in the garage!

I'm a bit surprised at how large some of the batteries people are running - standard minis have a very low power requirement and often the cheapest, lowest rated battery will do - we've only ever bought the motormate $39-$49 special for all our Minis and they've done fine (usually around the 300 CCA mark). Unless you have a highly modified mini with extras such as A/C, EFI, a massive stereo with subs and amps you just don't need all that capacity - my golf diesel has a 600CCA battery which will heat the glow plugs for 20 seconds and then still be able to crank the 1.25kW starter motor and start the car.

IMHO buying a larger capacity battery is a waste of $$$ if you have a standard Mini, the only benefits I can think of is that if you leave your lights on all day you might still have enough juice left to start the car, or if you mess around with tuning and do a lot of cranking etc that you need the extra capacity. If your mini is hard to start and needs a lot of cranking to get going, there could be any number of problems elsewhere such as dirty connections, worn starter, ignition faults etc etc - fitting a higher rated battery may fix these temporarily but they will only get worse until the point where one day you'll be stranded.

The other big point that is made in that link is the issue of sulfation:

Quote:
Sulfation of Batteries starts when specific gravity falls below 1.225 or voltage measures less than 12.4 for a 12v battery, or 6.2 for a 6 volt battery. Sulfation hardens on the battery plates reducing and eventually destroying the ability of the battery to generate Volts and Amps.


For any car that is not driven daily, this is a real issue and keeping the battery voltage above 12.4v is essential if you want your battery to last more than 6months - 1yr. I have found that one of those solar battery chargers (bought several from Jaycar - http://www.jaycar.com.au/productView.as ... rm=KEYWORD ) are fantastic at keeping the battery voltage up - I soldered two battery clips on to the end as the 850 doesn't have a ciggy lighter and connect it directly to the battery. The other bonus of this is that the battery is always fully charged so even if the car has sat for 2 weeks to a month, it always fires up instantly. I'd highly reccomend one of these - a lot cheaper than replacing a battery every year!

Sorry for the long winded reply (again :oops: ) - my 2c

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Dave - 64 Nurburg White Morris 850 & 67 Morris Mini Deluxe (Bro's Car)
Previous Rides - 62 Morris 850 (Sold '03 - Now 'Lulu-62') & 76 Clubman S (Sold '99 - SFW-863)
+ Too many other classics


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 Post subject:
PostPosted: Thu Jan 27, 2011 10:09 am 
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1360cc
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Joined: Sat May 08, 2004 9:01 pm
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Location: Cairns, Nrth QLD
Another benefit of my Carcoon, it also has a battery monitor/trickle charger, so its always topped up. I need as much powarrrrr as I can get for my fully sic subwoooofers and amps.

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PostPosted: Thu Jan 27, 2011 1:19 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
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Location: near Baulkham Hills, NSW
I fit big batteries because when they start to deteriorate after 3 or 4 years, they will still crank a Mini fine. Unlike small ones, which curl their toes up much sooner.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


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PostPosted: Thu Jan 27, 2011 1:58 pm 
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Location: Adelaide
i find the big battery cranks much better with my supercharged motor.


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PostPosted: Thu Jan 27, 2011 2:38 pm 
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Location: Wodonga - Vic/NSW border
I did a motor for dad a few years ago, and he brought a battery to start it with. I said "don't bring one of your usual sh*t batteries", he said "I always have good batteries" - well his wouldn't even turn it over... new motor with 10:1 compression, a little 300CCA battery wouldn't budge it

Super-mini wrote:
i find the big battery cranks much better with my supercharged motor.


the SC motor would have low compression so should be easy to turn over, but do you notice a difference when cranking with the SC clutch disengaged?

have you tried it?


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PostPosted: Thu Jan 27, 2011 2:55 pm 
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Supercharged
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Location: Adelaide
i have the sc clutch wired to ignition.

with the clutch disengaged the air cant flow into the engine past the supercharger so its difficult to start and drive


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PostPosted: Thu Jan 27, 2011 3:28 pm 
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Super-mini wrote:
i have the sc clutch wired to ignition.

with the clutch disengaged the air cant flow into the engine past the supercharger so its difficult to start and drive


yeah, sure, just wondering if you've disconnected it to see what sort of cranking load it sucks up...

I don't remember if I did it or not, I would have had the clutch disengaged and turned it over at some point, don't think I noticed any difference


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PostPosted: Thu Jan 27, 2011 5:11 pm 
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I run a big battery because they crank the motor well when it is minus 10°

I buy them from Kmart. They don't have a clue when you return a faulty one.


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PostPosted: Thu Jan 27, 2011 5:30 pm 
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1275cc
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Location: SE QLD
Morris 1100 wrote:
I run a big battery because they crank the motor well when it is minus 10°

I buy them from Kmart. They don't have a clue when you return a faulty one.


Concur - I have a 660CCA in the falcon and a 550CCA for the mini. Canberra winters will kill a lower CCA battery lickety split.

Hooroo

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