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[Vincenze]

You can look for it at online electronic part stores. But potentiometers are standardized and have pretty simple nuts compared to this.

Here it costs $10.
https://www.ebay.com/itm...

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It looks to me like a special nut.

https://www.ebay.com/itm/16548672747...sAAOSwVwFig-sZ


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If they work, don't touch them.

I believe one is LDO.

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I believe only 6-cylinder Z3s had Torsen and clutch LSDs.
You should verify it on Z3 forums....

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If you have to ask somebody knowledgeable (as you should) to set it, it'll be expensive.

Good 4.10 LSD differentials cost the same as 3.73 differentials.

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There are inexpensive teflon seals and clutch disks for repairs of the ZF 4HP22.

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There are seal kits for some AC compressors, so they can be disassembled.

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These are not the connectors you should be looking for. They are used just to connect two wires together.

You should take out the terminals that you want to replace and then try to find matches...

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The Z3 M....

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If I understand correctly, BMW completely moved to dual-mass flywheels in the 90s.

Valeo created this product for those owners "who need performance instead of non-vibration".

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Maybe, you can weld these parts to a coupe.
https://e30garage.no/product/m3-replica-kit/

They also sell the shell https://e30garage.no/product/e30-m3-body-skeleton/

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Maybe, this repair tutorial will help.
https://www.e30zone.net/e30wiki/inde...cking_problems

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They are expensive, almost twice the price of the Recaro Expert.
https://www.parkautomotorsports.ca/c.../recaro?page=2...

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I saw videos about sending unit repairs https://www.youtube.com/watch?v=5OXdkznEILw
They are pretty expensive new.

There is a resistor that connects the + (FULL) terminal of the fuel...

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The repair kit is available if you look around:
https://www.fcpeuro.com/products/bmw...nt-34111161936
https://www.pelicanparts.com/More_In...61-936-BOE.htm
https...

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I believe you need to find an electronic transmission 4hp22-eh plus its computer.
It was used in other models E28, etc.