hey guys,

i've just had a bigger motor put in my mini and the battery seems to JUST turn the motor over. it's gone from a 998 to a 1330 with LOTS of work done.

suggestions on what sort of battery i need would be greatly appreciated.

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The BLUE BRIK

is the earth strap from the gearbox to the car earthed properly? i had the same problem but it wasnt the battery is was the earth strap, i had paint on the body and wasnt earthing properly

you shouldnt need a bigger battery, but if you are getting a new one get one with a large cold crank value, mines somewhere around 500 or so

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1962 850,Frog

maybe thier considerable differnace in compression between the two engines and the starter motor is having troubles turning the motor over so a biggr battery is required

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Stop Licking the Dog...I Don't Care Who Started It

There is no point in asking if you need a stronger battery if you won't tell us the specs of the battery that you currently have.

why not? I bet his current battery doesn't eat it's weeties, and is just a general wussbag....

see, I'm sure he hasn't got a 550 CCA calcium battery - I've got about an 8m sloping driveway and I've driven my car up it using the starter motor a few times

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did I tell you that I won a trophy?

Mate, get a high cca gel jobby; that will even get Granny to go

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1964 Cooper UK 970 S 'CZ 4289'

Is nobody going to ask about the condition of the starter motor?

I went through the routine of the starter motor letting the engine down only a few months ago. a properly sorted and rebuilt starter motor spins my 1310 over like a sewing machine. A 1330 shouldn't be any different.

Pull it down and check the condition of the brushes, also the condition of the commutator (should be fairly flat and no pitting.
Look for discoloration of the conductors relative to one another on the rotor as this will indicate a problem with the windings.

Also check your battrery leads for damage as well as your terminals.

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

They can't afford to ask about starters after buying big CCA gel batteries.

My own theory is not to buy anything until you know what the problem is.

nah, we just keep grabbing another starter motor off the shelf as each one dies.... see, we could also ask if the motor is too far advanced, but that'd be too easy as well

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did I tell you that I won a trophy?

I'm in a similar situation but i dont have the original battery. What do people recommend for a cheap reliable battery?

My van has a DIN77 700 cca sealed battery. No problemo, runs the stereo well

My clubby has a 480cca battery, no problem.

Get your battery tested, it's probably a bit weak.

Has it ever been dead flat? Lead acid battery killer, knocks off 10% each time.

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Dean Hutton's first car was a Mini.

had same prob on my evil mini,turned out to be rooted solenoid,so i would get another solenoid and check,also check condition of yer earth strap...

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First you get the money,then you get the power,then you get the Mini.

may be the earth, the engine bay has just been freshly painted.
most likely is the weakness of th battery it is VERY small.
and YES the battery has been dead flat several times since the motor has has been rebuilt which was only a week ago.

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The BLUE BRIK

holla for a MARSHALL!! (im in the glovebox), hasnt failed me yet.

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Aussie Leyland, Aussie Factory, Aussie Mini S.