3.46 swap Help

Hopbach · 01-09-2009, 02:02 PM

i just recieved my 3.46 diff. are the drive axle flanges (diff side) interchangeable? my original has 2 bolts close together then big space then another two close together and so on. the flanges which came on the 3.46 have 6 equally spaced thread holes. can i pop the original out and pop it back in to the new 3.46? Ne info is greatly appreciated. Thanks.

Knight2424 · 01-20-2009, 04:23 PM

Yes...

Alex323Ci · 01-20-2009, 04:42 PM

when you say drive axle flanges, do you mean the input or the two output?
yes, they are interchangeable. the single input is very important that it be put on and measured to spec. if not the pulling on the pinion gear will make your diff's gears wear and go out very prematurely. after that point it's toast and cheaper to buy another diff.

NightWolfe · 01-20-2009, 05:31 PM

The output flanges just pop off .. you'll probably bend the little dust cover a bit but don't worry about it

01-09-2009, 02:02 PM	#1
Hopbach Registered User Join Date: Jun 2008 Location: Ottawa, Canada Posts: 7 My Ride: 2004 330 CI ZHP View My Garage	3.46 swap Help i just recieved my 3.46 diff. are the drive axle flanges (diff side) interchangeable? my original has 2 bolts close together then big space then another two close together and so on. the flanges which came on the 3.46 have 6 equally spaced thread holes. can i pop the original out and pop it back in to the new 3.46? Ne info is greatly appreciated. Thanks.

01-20-2009, 04:23 PM	#2
Knight2424 Registered User Join Date: May 2006 Location: Austin Texas Posts: 414 My Ride: E46, 3000GT View My Garage	Yes... __________________ MOD LIST: UUC TSE3 Exhaust, Predator Chroniums, Simota CF Intake, Depo Smoked Corners, Custom Alcantara Shift boot, ZHP Wheels, ZHP Shifter, CSL V1 Bumper, Euro-Spec Carbon Fiber CSL Trunk, Ceramic Tint , M// Steering Wheel, EE LEDs Tail lights, Optima Red Top Battery, 2-12" L7 Solobarics, 2000wtts D-class Hifonics mono amp,NGK Iridium plugs.

01-20-2009, 04:42 PM	#3
Alex323Ci Registered User Join Date: Jan 2005 Location: Huntington Beach -Surf City USA Posts: 15,106 My Ride: M3 & 323Ci (sold) View My Garage	when you say drive axle flanges, do you mean the input or the two output? yes, they are interchangeable. the single input is very important that it be put on and measured to spec. if not the pulling on the pinion gear will make your diff's gears wear and go out very prematurely. after that point it's toast and cheaper to buy another diff. __________________ OEM CSL WHEELS - OEM CSL BRAKES - OEM AUTOFOLD MIRRORS - CSL TRUNK - CSL DIFFUSER - AA SPORT TUNE - AA PULLEYS - BILSTEIN PSS9s - AUTOSOLUTIONS SSK CF CSL RACE LIP - NAVI HU - BMW PERFORMANCE CF STRUT BAR - BMW GROUP-N MTRMTS - UUC SS BRAKELINES, TRANS MOUNTS, RTABs - 4.10 BMW M-SPORT DIFF

01-20-2009, 05:31 PM	#4
NightWolfe Registered User Join Date: Oct 2005 Location: Orlando, FL Posts: 613 My Ride: 02' 330CI View My Garage	The output flanges just pop off .. you'll probably bend the little dust cover a bit but don't worry about it __________________ For Sale - Soundstream Subs & Amp - OEM 330ci Exhaust - MK3 Nav & HK Items

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