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Title: BMW conversion bearings Post by: leec on July 16, 2018, 22:35:25 pm Hi guys,
Quick question. I know people are using BMW bearings to run a type 4 journal crank in a standard line bore type 1 case. Are these bearings available for a type 4 mains crank that has had a grind to first undersized? Lee Title: Re: BMW conversion bearings Post by: dragvw2180 on July 17, 2018, 00:34:59 am They do not make them for the O/D but do make them for the I/D of the bearings from what I have seen. Mike
Title: Re: BMW conversion bearings Post by: UltraOrange67-2443 on July 17, 2018, 09:10:21 am I got some spare ones in standard size from King Bearing.
I will check the part number and you could ask the supplier about it. You also need to narrow the bearing. Cheers, Nick Title: Re: BMW conversion bearings Post by: leec on July 17, 2018, 09:33:17 am They do not make them for the O/D but do make them for the I/D of the bearings from what I have seen. Mike Thanks Inside diameter would be crank size? Lee Title: Re: BMW conversion bearings Post by: Tufty65 on July 17, 2018, 22:38:56 pm Loads on eBay, bmw m30 bearings, from .25mm oversize bearing up to .75mm (for .25mm to .75mm undersized crank)
Need to narrow them tho as said. Title: Re: BMW conversion bearings Post by: UltraOrange67-2443 on July 23, 2018, 15:07:22 pm Don't forget to add the notch for the Bearing tang!
That thrust Bearing are you using? Title: Re: BMW conversion bearings Post by: leec on July 23, 2018, 17:36:35 pm I haven't got that far with this yet. I have bought the crank now and will wait for it to arrive and go from there
Thanks, Lee Title: Re: BMW conversion bearings Post by: bedjo78 on July 24, 2018, 05:27:02 am How about Crysler bearings ? Are they have outer oversize main ?
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