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Starter Motor
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Author:  BBart [ Wed Oct 25, 2017 10:21 am ]
Post subject:  Starter Motor

Gday. What's the latest with Starter Motors? I've had it with the original type and want to change to the pre-engaged Gemini type.

After some searching on here I ordered one from MG Spare Parts (Heritage MG) but got a message back that they are out of stock.

Am I best to get an original Gemini one to modify from a wrecker, or are the new ones better? I see Minisport stock one but quite pricey at $450. I guess anything original from a Gemini is quite old now for an electric motor..

Author:  drmini in aust [ Wed Oct 25, 2017 10:25 am ]
Post subject:  Re: Starter Motor

You can get new Gemini starters on eBay for around $170 last time I looked.
To make them fit takes 10mins to file the mounting flange holes.
You will need to either keep the old Lucas solenoid to drive the Gemini one, or ose a 40A relay. Otherwise your ignition switch will get to handle 35A. Not designed for this.

Author:  BBart [ Thu Oct 26, 2017 10:13 am ]
Post subject:  Re: Starter Motor

Many thanks. I'll track down a new Gemini one. The mods and electrical shouldn't be a problem, thanks for the tips. Cheers.

Author:  goodie [ Fri Oct 27, 2017 4:56 am ]
Post subject:  Re: Starter Motor

You could check with Tony , Mini Convertable on here , i'm sure he has them .

Author:  coopar [ Fri Oct 27, 2017 10:56 am ]
Post subject:  Re: Starter Motor

Does it have to suit a certain model?

Sent from my HTC_PN071 using Tapatalk

Author:  drmini in aust [ Fri Oct 27, 2017 8:59 pm ]
Post subject:  Re: Starter Motor

coopar wrote:
Does it have to suit a certain model?

Sent from my HTC_PN071 using Tapatalk

Like this

https://www.ebay.com.au/itm/Holden-Isuz ... 0011.m1850

Won't fit with an S oil cooler.
(Edit) unless you move it towards radiator.

Author:  BBart [ Fri Nov 03, 2017 8:53 am ]
Post subject:  Re: Starter Motor

Thanks for the replies. A Gemini one from Ebay is on it's way to me as we speak. Cheers!

Author:  Besser [ Mon Nov 06, 2017 7:53 am ]
Post subject:  Re: Starter Motor

Have a Gemini one on my a+ but they don't crank as hard as the originals. Called Holden in the 90's and checked the cranking torque, turns out it's a little less then the Lucas original.

Author:  drmini in aust [ Mon Nov 06, 2017 8:23 am ]
Post subject:  Re: Starter Motor

And they draw a lot more current, 350A according to the data sheet.
But benefits are the pinion doesn't throw out if motor gives isolated kicks, also it doesn't munch the ring gear teeth up.

Author:  IndigoBlueCooperS [ Mon Nov 06, 2017 8:11 pm ]
Post subject:  Re: Starter Motor

I use the ones from Tony, Convertible Mini.
Do a good job, and fit with the standard S oil cooler.

Author:  mickmini [ Mon Nov 06, 2017 10:26 pm ]
Post subject:  Re: Starter Motor

IndigoBlueCooperS wrote:
I use the ones from Tony, Convertible Mini.
Do a good job, and fit with the standard S oil cooler.


I have one of these too. It does the business no issues and has done for years.

Author:  slide [ Tue Nov 07, 2017 4:49 pm ]
Post subject:  Re: Starter Motor

I just cut the protruding nose off the flywheel "wok" so the pinion/bendix hangs in fresh air. Easy to get to, clean and keep lubricated with graphite. Never had a problem since.

Author:  Convertible Mini [ Fri Nov 10, 2017 8:27 pm ]
Post subject:  Re: Starter Motor

I still make the Bosch Planetary geared Starters for Minis.Sold quite a few over the years. Most Australian Mini racers have one of mine fitted too. They are guaranteed to start any mini engine regardless of compression ratio or bore size. yes and they even fit on a cooper S with oil cooler in front. My own design modification that I am proud of.

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