Want to do an M30 swap

[ping65810]

I am just cutting the connectors off and splicing everything, not connecting the connectors

[JoeMadoo]

Those look pretty good. But i still dont see the pinouts for the C101 connector.

I'm so confused... I dont know whether to use the 89 325i harness or the 89 535i harness. I've been getting mixed answers about c104 connection at the very beginning of the harness that has the tach/fuel/mpg wires, some say if you dont get those right the car wont start?

[ping65810]

http://shark.armchair.mb.ca/~dave/BMW/index.html

Thats where I got mine from. Just make sure you actually download them and save the ones that you need, they have them for all years, just in case the site goes offline or anything. Haynes manual at least they are pretty vague. Just my experiance, but they are better than nothing.

[JoeMadoo]

Does Bently or Hanes have good diagrams?

[ping65810]

The plugs physically plug into each other fine....the pins don't match up though. Meaning, car no workie. I could either chane the pin placement, or just splice the maybe 7 or so wires needed without any difficultly. Even within some years, some motors will have the correct pin placement, and some won't. All depends on options, and year to year changes. Either way, just get a a hold of wiring diagrams for both the donor car and your car, and just match them up.

[bmw335isturbo]

pix:

Looken good Joe will have to see what she is made of when you are done.

[Funkmasta]

How about E28/E24 motors? direct swap to 87is?

we shall find out I suppose...

[ping65810]

From what I have gathered- with some m30 swaps its plug and play withe the fuse box, but not all. With my swap (90 735i motor, 87 325iS car) they dont meet up at all, and therefore I need to manually splice the wiring to get it all to work okay

[Funkmasta]

will let you know what we find. We have an i fusebox though, so not sure how it will differ

[JoeMadoo]

OK i have a few questions.

Is it ok to run the M30 without the little pulse wire on the #6 spark plug wire? because i dont think the M20 harness has one.

And is the fuse box plug "plug and play" with the harness or do i need to move wires around? I have an 1/1986 325e fusebox, 1989 325i harness with an 1989 m30.

[Funkmasta]

pix:

[Jean]

Joe Funk - did you end up modifying yours or still running ok ?

[euroshark]

Any M30, if it sits far enough back, is gonna touch. Thats my understanding.

[Jean]

Wow, great thread guys!

What's the verdict about the firewall ? Does it have to be modified if one is using a specific version of m30 ?

[Axxe]

I can't believe my thread has 154 replies. Wow. I just started building my M30 last night at like 2AM, and noticed there is no timing mark on the head. Anyone know where it is? I "think" i have it just right, with the block at TDC, and the rotor is straight down sparking #1. Someone tell me if thats not right, please.

Here are some pics of my progress...
Putting the Crank Nut on.


Let my girlfriend scrub the carbon off the pistons.



Trying to line up with the imaginary timing mark on the head.



Progress as of last night at 2.



Alpina Oil Cooler :) ^^^

Motor looks nice. Just make sure you clean up the oxidation on the T-stat housing before putting a hose on, will ensure a perfect seal.

As soon as I finish up my exams, I'm going to track down a shell and do my fucking swap already, I have all the parts except for the driveshaft and rad sitting at home just waiting. Also, I think I should clean the motor up first, it's not very pretty.