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Remote starter switch for easy E30 M20 valve adjustment

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September 23, 2024

One major quality-of-life improvement when performing a valve adjustment on an E30 is the ability to use the starter instead of a wrench and socket on the crankshaft to rotate each cam lobe away from the rocker for adjustment. Luckily, the diagnostic port on an E30 can trigger the starter by simply bridging pins...
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The Denso 10P15E AC air conditioning E30 guide

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September 13, 2024

This article serves to provide nuanced detail for those looking to refresh their OEM setup (Denso with early style dryer in particular); one of the biggest roadblocks is that the OEM parts catalogue (ETK) is often wrong. Also, reference to this article for how to recharge the AC system: How to recharge the AC...
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E30 Glovebox removal and how to change the AC evaporator

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September 13, 2024

When changing the AC evaporator on a BMW E30, there’s definitely a right and a wrong way to do it. The glovebox is attached to the car by a brass-colored piano bracket. If you remove the black screws, you’re going to spend a lot of time realigning the glovebox when reinstalling. Instead, if you...
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How to test E30 Bosch AFM (Bench test)

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July 9, 2024

There is only one correct way to test an E30 AFM, and that’s by using an oscilloscope. The most common mode of failure is the wearing of the carbon strip within the AFM. In simple terms, the AFM is one big variable resistor. It takes a +5V supply, and the carbon strip provides variable...
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Choosing the correct E30 M20 accessory v-belts

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September 30, 2024

Here are some nuances to understand when picking E30 M20 accessory belts. First reference this to understand how some...
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Silver paint color for BBS and BMW Basketweaves

1
June 22, 2024

If you decide to paint your wheels instead of powdercoating (which you should): Is powdercoating bad for rims? Yes,...
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E30 ECU variant programming specificity between manual and auto cars

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May 22, 2024

Counter to popular narrative on E30 forums (based on self perpetuating hearsay), there are variant code differences between manual...
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3D file for E30 battery vent box grommet for pre 1988

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May 22, 2024

The grommet for the pre-1988 E30 is NLA, but its nothing a bit of TPU (95a or softer) can’t...
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