Race Car V4.0 - Ground up

[D_Eclipse9916]

my head a splode

Yeah, so did mine.

Unfortunately I had to play this parts swaparoo game because there is no continuity in the original build, and things have been replaced since World Challenge Specs.  Also helped complicate things that AKG sent the wrong tapered sphericals that were supposed to be 325i, but were actually made for M3.  *sigh*

Great thing is, since I am building the car from the ground up, I am going through all this and am able to identify and replace things that don't make sense and log for future maintenance intervals. 

Moar fun - brake lines are for a MK20 stock system which are completely different than a MK60 system and don't adapt to my brakes for this car since they were made for a custom application using AN-3.  

EVEN MOAR FUN - Axles for M3s and Non-Ms are different right?  Well there are also late model/early model, automatic, manual and different gearing changes axles too.  WTF was in this thing? no idea but slowly working through it using realoem since no part numbers remain...

---

So why are the old parts being swapped on? Is there some benefit to using non M parts?

Sent from my Pixel using Tapatalk

Non-M rear end stuff is lighter.....and cost.
  
  If I decided to switch to M3 running gear JUST For the rear.  Easy right? 
-New DiffsOnline Diff since M3 is completely different. $6400 edit: Oh only $5,900 for the same specs I currently have :rolls eyes:
-New Rear Brakes since mounting arms are different $2600
-New Driveshaft as spacing is different, also paired with the stronger 5 speed trans, so gotta source that right combo...
-New subframe solid bushings at $300
-Custom Rear Sway bar wouldn't fit so would have to figure out/weld/fabricate new mounts

Front end is simple and I got lucky, I didn't WANT to switch to M3 because the 330i caliper mounting offset is different so I would have to get a new $3k+ brake kit and throw away the $1500-2k worth of brake pads I have already stockpiled.

Luckily it already had M3 front spindles matched with the brakes so I am all good up front with all M3 stuff.