M30 OEM Turbo project

[punnzzells]

pretty awesome build.... I remember the 745i and the 645i as well....man, keep up the good work.

[kronus]

I remember the 745i and the 645i as well

i want what you're smoking

[ThatOneEuroE30]

i want what you're smoking

2nd this

[kamotors]

i want what you're smoking

[kronus]

ok, now look up a 645i ;)


edit: also the thing you quoted is super wrong. there's an error every 5 words or so.

edit edit: there you go, I fixed the wiki page, feel free to explain what a 745i is.

[e30m3s54turbo]

ok, now look up a 645i ;)

The only 645i I seen was a Mike Dietel conversion tn the early 80's. I use to own a 345i e21 Mike Dietel built. Maybe he thinks it was BMW factory built e24.

[kronus]

There's been a M106-converted euro e24 for sale in the bay for a few months. The guy wants 10K, though..

[ZenitramNaes]

There's been a M106-converted euro e24 for sale in the bay for a few months. The guy wants 10K, though..

Hah!

Read that wrong, thought he was asking 10k for just the m106 motor.

[CorvallisBMW]

There's been a M106-converted euro e24 for sale in the bay for a few months. The guy wants 10K, though..

If it's a clean e24, I'd say that's a good price. mmmmmm turbo shark.....

[CorvallisBMW]

The factory M106 motor came with heat shields that sat on top of the manifold and kind of wrapped around the wastegate. They're cool and all, but for some reason BMW decided to make them out of mild steel instead of stainless or whatever. So they rust and corrode like a bitch. I sandblasted mine and painted them with header paint rated to 1500F, but they still looked like shit.







Thankfully I work for a company that manufactures mostly stainless steel sheet metal. Out with the old:



In with the new. All made from 16ga (0.060") 304 Stainless. This should do nicely.



I'll mount it all up tomorrow and take some pics.

[ThatOneEuroE30]

Those look nice. may have to get a set from you come time...

[kronus]

bead roll some dongs into those!

[MR 325]

Loving the updates! The gauge wiring came out great!

[CorvallisBMW]

Anyone who knows me well knows that I can turn a mean wrench, but electricity and I get along like, well, electricity and water. James (and others) have had plenty of good laughs over my incompetence haha. So one of the goals I set out for myself was to get better at my wiring.

Some if it you can see in the way I wired the gauges (insulated connectors, heatshrink, labels, etc) but really' it's practice and experience that count. Time for more wiring then!

In total I have 5 new power draws on the car:
- gauge power
- gauge backlights
- LC2 wideband controller
- intercooler fan
- intercooler spray pump

All of these should be on switched 12V power and rather than running 5 new circuits with 5 inline fuses and blah blah blah... I decided to add a fuse block that was fed by switched 12V, so that anything I hooked to it would also be switched 12V. Here's the layout.


Constant 12V power feeds through a 30A fuse and then in to a relay to make it "switched" with the ignition. Then that power gets distributed to the fuse block, and on to the various accessories. All the wiring before the split is 10ga, all wiring after is 18ga. Plenty of copper to handle the amps.


Here's the 30A fuse bolted just below the harness, next to the firewall distribution block (it's upside down... photobucket flat-out refuses to rotate it for some reason???)



Next I split the 10ga wire in to six 18ga wires to feed the fuse block. I found the easiest way to do this was to use my heat gun to get the wires super hot, and then just melt in the solder.



Once that was all heatshrinked and tucked away safely on the cabin side of the firewall, I ran the 18ga wires in to the fuse block for power. So what you see here is 12V being fed in to the fuse block, the power for each circuit comes out the other side. And labels, of course!:



Ideally I should have found a fuse block that let me run a single large-gauge wire in to it instead of having to break it in to 6 individual feeds, but whatever. This was good quality and readily available. I'll add some more photos after I mount the fuse block and get the accessories hooked up to it.

[EDirty325]

Sub'd. Read every post in one sitting haha ready to go home and tear my M20 apart now. Looking great man! I can appreciate someone else who pays great attention to detail :bow:

Can't wait to see the finished product. Although we all know it's never really "finished" :D