So I pulled the traditional e36 big power diff trick. I’d like to think of this as the intelligent way to execute it in a e46. The right-er way would have been a e39 m5 diff. The m5 diff has a lot less mass under the pinion, and as such is shaped much more like the e46 m3 diff.

I’m really banging my head against a wall, the other day bf.c had a posting for a e39 m5 diff FS, $250/asking. That’s less than what I paid for the e32 750 diff.

e39 M5 diff:
-can sometimes be found cheap
-requires less or no cutting
-40% lockup
-drain on diff
-only one mount location, facing front (wrong direction)

e32 750 diff:
-can always be found relatively inexpensively. I got mine for around $300/shipped
-three possible mount points parallel to the axles, from the passenger side of the car
-25% lockup
-huge snout (bad, lots of cutting)

So maybe the upside of the 750 will pay off with more mounting and I’ll never have a broken diff bolt. My diff is held by two of the three available mount points

The PSI welder and I went at it… this is what we made…
I’ve driven on it a good bit, I’m quiet happy with it.

bluejeansonfire General

The 188k is the partially hollow, smaller output shaft

I’m not sure how successfully I really photographed this. Despite the 7d, I seem to only ever have the iphone on me when taking car pics. I’m awaiting the moment a slr has a phone in it.

here’s a quick comparison of the big diff and medium case output shafts:

bluejeansonfire General

At this new location, there’s ton of space and there’s a list of things to get doen on the 330. Updates will at least include a mildly revised exhaust system, a new transmission, new clutch setup… I’m looking forward to it.

updates on diff also coming soon

bluejeansonfire General 330ci, 528i, e46, e46nonm, technique tuning, tt tuning, turbo

bluejeansonfire General

bluejeansonfire General 330ci, e46 ms43, forced performance, gt3582r, hta3582, low boost, oleg, technique, tt tuning, tuning, turbo, turbo garage 13

bluejeansonfire General

I’m happy to say that finally, I have gotten my kit built and finished and the only things left right now are: wiring in the meth system/boost controller, the a/c dryer and a charge to the system, and revising a few little details of the exhaust.

I just dynoed my car yesterday at a local dynojet, it made a best out of two passes, 414.68whp and 376wtq SAE corrected at the wastegate spring setting of 10.5psi

bluejeansonfire General

Mods so far:
AA C-38 supercharged stage II (oil cooler, intercooler, meth injection)
AA headers
AA cluth & flywheel
AA short shifter and shift knob
Dinan Stage III suspension (sways,springs,shocks)
Dinan muffler
Dinan differential
Bav Auto coil pack
Brembo slotted and drilled rotors
Hawk Pads
BBS RK’s

mpowerurmind General

If you’re in central Florida and you care about modded BMWs, this is not an event to miss.
There will be at least two e46 M3 HPF cars…
at least one “in-progress” M5 twin-supercharged G-Power car
My e46nonM turbo Technique Tuning project will be in progress
David’s “world’s fastest” 328i e46 will be present
Active’s original e46 M3 Rotrex “renegade” kit
and much, much more

bluejeansonfire General

nightdrive1 from Sidney Feldman on Vimeo.

Thread with more on this kit installation: “ZHP TT impression”

bluejeansonfire General 330, 330i, m54, technique tuning, TT BMW, turbo