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I have a 1943 GPW with a 12 volt conversion. Not fitted by me, it's the way it came. It has the original type of 6 volt starter which most of the time works fine but occasionally makes either a terrible graunching noise or just fails to engage and whirrs away. The problem is more prevalent when the engine is warm. There is a new ring gear on the flywheel, fitted as part of a recent engine rebuilt, and a new spindle bush  in the bell housing. I've cleaned and inspected the starter, everything looks fine and moves the way it should do.

I've read conflicting stories about using a 6 volt starter on 12 volts, some people say there's no problem, others say that the over-rapid engagement will prematurely destroy the gears. I've also read that fitting a stronger bendix spring can be beneficial. Also been told that the original starters were better made than modern replacements and if I have one I should endeavour to keep it.

So, any advice please?

Thanks, John

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When I was looking for someone to rebuild a starter Barry Ring suggested using a Denso high torque starter. We fitted one and have had no issues. 
 

https://www.amp-starters.co.uk/Automotive-Equipment/WOSP-Reduction-Gear-Starter-Motors/Willys-Jeep-Starters/WOSP-LMS250---New-Willys-Jeep-97-tooth-flywheel-Reduction-Gear-Starter-Motor__p-5435-599-3460-34217.aspx

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I had a similar issue with my starter on 12 volt system that was set by the previous owner

I had my starter rebuilt to 12volt by this chap in Lancashire, he doesn't have a website but you have the details here:

https://www.autoinsider.co.uk/local/20407/c-i-auto-electrical-services

I posted it from Dorset, took a week or so to get it back fully rebuilt like new.. cost a few bob, but have had not issues since

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  • 3 weeks later...

Just to round this off:

I dismantled the Bendix and found a component inside was broken in two, the plunger, I think it's called. A new Bendix from East Coast Jeeps seems to have solved the problem. It was sold as being suitable for 6V and 12V, so hopefully it will stay fixed. Fingers crossed.

IMG_8187.JPG

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