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Do it Yourself

A place to find DIY guides to doing car repairs/mods/etc.

Crackling and/or popping stock radio – fix

0
November 28, 2012
Crackling and/or popping stock radio – fix

After having removed the incorrectly installed aftermarket radio (wiring was completely incorrect) out of my E30, I put back in the stock radio that came with my car when I bought it and wired it back to stock. After turning the radio on I noticed a terrible crackling and popping sound when I would...
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Service interval indicator and inspection reset E30

2
October 29, 2012
Service interval indicator and inspection reset E30

Contrary to popular belief you do not need a reset “tool” to reset the service indicator and inspection lights on your dash. All you need is a simple piece of wire (strip both ends): This wire will act as a jumper wire between two terminals. Some people suggest using a wire with a fuse...
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ECU Pinout and Electrical tests E30

9
October 27, 2012
ECU Pinout and Electrical tests E30

Where and how to access ECU: I have tried to illustrate where and how to access the ECU, it is in the glove box compartment. To access it open your glove box and undo the two screws holding the plastic cover that is at the “ceiling” of the glove box compartment, under there you...
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M20B25 Valve adjustment E30 (325i, 325is, 325ix)

5
October 22, 2012
M20B25 Valve adjustment E30 (325i, 325is, 325ix)

M20 E30 engines are flat tappet engines and require periodic valve adjustments. The loved and distinctive sound of M20 ticking especially when cold, is because of the flat tappet design. The reasons to adjust your valves includes increased compression because both intake and exhaust valves close fully. Increased fuel economy, and generally improved performance....
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Changing E30 Engine, Motor mounts DIY

0
October 21, 2012
Changing E30 Engine, Motor mounts DIY

Changing the engine mounts is a fairly simple concept, however knowing some tips and tricks makes the process a lot quicker. I found it easier to lift the engine and change one mount at a time. I did not have to lift the car to do this job. Both sides: Undo the top nuts...
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Changing E30 Transmission Mounts DIY

0
October 20, 2012
Changing E30 Transmission Mounts DIY

  Transmission mounts are fairly easy to change. Do not attempt to change the mounts unless you have a car jack handy to support/lift the transmission (just a normal jack, im not referring to anything special; scissor jack, hydraulic jack, whatever). The reason you need a car jack and cannot use a jack stand...
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BMW VIN decoder – see what options your BMW came with from the factory

4
September 2, 2012
BMW VIN decoder – see what options your BMW came with from the factory

On a 25 year old E30 it is hard to know what options were original to the car and what options were added later by previous owners. Take for example my E30, it has the original white exterior with a cardinal red interior. However after decoding my VIN I discovered the cardinal interior was not original to my...
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Diagnosing and fixing cooling system and overheating issues

1
July 3, 2012
Diagnosing and fixing cooling system and overheating issues

I recently acquired another E30 and am officially back in the E30 scene. Unfortunately the car had an overheating problem among other things, and facing a 2500 mile trip ahead of me, this overheating problem needed to get sorted. Basically at idle and while driving the heat gauge would climb right around the 3/4 mark (should be at 1/2)....
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Radiator and cooling for M60 / M62 V8 E30 swap and other swaps

1
February 8, 2012
Radiator and cooling for M60 / M62 V8 E30 swap and other swaps

It is no surprise that an M60 / M62 requires more cooling capacity. There were two styles of radiators in M20 e30’s 1988+ and pre 1988. If you have 1988+ then an e36 or a Z3M (e36/4) radiator will fit without modification. If you have a pre 1988 then ‘it drops in, no mods,...
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Calculating rim and tire sizes to achieve stock wheel diameter

0
January 24, 2012
Calculating rim and tire sizes to achieve stock wheel diameter

So your thinking, man I really dont like those bottle caps (stock rims) on my E30. A mistake a lot of people make is they intuitively think that a bigger rim automatically equals a bigger overall wheel diameter. Tire sizing is determined by calculating the mm width of the tread, percentage of that width...
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