» Site Navigation | | » Recent Threads | 1999 M3 Swap 09-07-2023 10:10 PM Yesterday 08:18 PM 6 Replies, 317,908 Views | | | | | | 09-28-2007, 02:01 AM | #1 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | Over-tightening cost $$$$ Just pulled my diff out today, to have the halfshaft seals and drive shaft seal replaced. Seems my buddy over tightened the top 4 bolts that hold the diff onto the carrier. Two snapped off, while trying to remove them. We brought the diff to a local shop, and they replaced all my seals and gaskets, with the BMW parts I supplied. The job cost $310.00. Reality is, the job would have cost only about $110.00, the rest is the time to drill out the busted bolts. This time I put anti-seize on the bolts, and they went in hand tight till I needed to torque the last few turns. I had my rear wheel bearings replaced at a cost of $500.00, because my buddy over tightened the hub nuts too tight. Both over tightening issues happened at the same time while doing the whole halfshaft/diff swap last year. A very valuable lesson. __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 09-28-2007, 09:07 AM | #2 | Senior Member Join Date: Aug 2004 Location: state college, pa Posts: 3,431 | If just the head snaps off the bolt, try these: or these: and a WHOLE lot of penetrating oil. A hammer helps, sometimes you'll need a propane torch. During reassembly, I have a syringes filled with Mobil1, Krytox, grease, red/blue loctite, anti-seize that I use on the bolts. It's incredibly handy and less messy, making me more likely to remember to use it. Also, any job that you do, re-torque the bolts after 50 miles. __________________ I scream, you scream, we all scream for ZOMBIES. | | | 09-28-2007, 01:12 PM | #3 | Senior Member Join Date: May 2007 Location: Seattle, WA Posts: 402 | Damn, L84THSKY, I remember you having some other over loose, or over tight problems in another thread, right after you installed the diff. Sorry to hear. Is there a moral to both stories though (other than foregoing the 8th beer on automotive projects, and having ham-fisted friends help)? __________________ 1997 332ti - Don't even ask. 2006 330i - ZPP/ZSP/ZCW/6sp/Nav/BT/H&R Sport 2011 E92 M3 | | | 09-28-2007, 01:57 PM | #4 | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 | Did you use an air ratchet or impact driver to tighten? __________________ '99 Dinan M3 | | | 09-28-2007, 02:38 PM | #5 | Senior Member Join Date: Jul 2007 Location: SW Florida Posts: 4,275 | do it yourself from now on! you only have yourself to blame the next time. besides, i get the feeling your friend is "learning" on your car and not at the local community college like he should. __________________ Sean 1995 Active | | | 09-28-2007, 04:29 PM | #6 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | Both issues I had with the hub bearings, and the diff bolts were caused during the same diff/halfshafts swap last year. My friend figured the tighter the better. Quote: Originally Posted by larryn Damn, L84THSKY, I remember you having some other over loose, or over tight problems in another thread, right after you installed the diff. Sorry to hear. Is there a moral to both stories though (other than foregoing the 8th beer on automotive projects, and having ham-fisted friends help)? | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 09-28-2007, 04:31 PM | #7 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | Neither. We just use brute force to tighten. My torque wrench wouldn't fit to tighten the diff bolts. The hub bearin nuts could of/should of been torqued correctly, since I could have fit the torque wrench for that part. Quote: Originally Posted by DustenT Did you use an air ratchet or impact driver to tighten? | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 09-28-2007, 04:32 PM | #8 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | I didn't leave the car with him, we were both side by side. He is my my tightener and loosener, I'm not getting any younger. In other words, I'm the brains and he the brawn. Quote: Originally Posted by teetime4one do it yourself from now on! you only have yourself to blame the next time. besides, i get the feeling your friend is "learning" on your car and not at the local community college like he should. | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 09-28-2007, 05:48 PM | #9 | Senior Member Join Date: Nov 2006 Location: Land of the Vikings Posts: 2,700 | Quote: Originally Posted by teetime4one do it yourself from now on! you only have yourself to blame the next time. besides, i get the feeling your friend is "learning" on your car and not at the local community college like he should. | i was gonna say the same, who is your friend?? King Kong ?? __________________ Vin Number decode and Retrofit Pdfs Available Free ! Just PM | | | 09-28-2007, 09:34 PM | #10 | Senior Member Join Date: Jul 2007 Location: SW Florida Posts: 4,275 | lol __________________ Sean 1995 Active | | | 10-09-2007, 05:32 PM | #11 | Senior Member Join Date: Feb 2005 Location: Richmond Hill, GA Posts: 1,231 | so you bolts were torqued to german specs.................. Guten Tight................... sorry thats my idea of humor. | | | 10-10-2007, 01:42 AM | #12 | Senior Member Join Date: Jul 2007 Location: SW Florida Posts: 4,275 | ROTFL __________________ Sean 1995 Active | | | 11-13-2007, 07:37 PM | #13 | Senior Member Join Date: Feb 2004 Location: Fort Worth, TX Posts: 234 | lol __________________ | | | 11-14-2007, 06:18 PM | #14 | Senior Member Join Date: Sep 2006 Location: Wisconsin Posts: 1,895 | Too bad about your snapped bolts. I've been using the same torque wrench I bought when I was 16. That was 26 years ago. When I can't fit the torque wrench in the space, or I'm just too lazy to bother, I think of it this way: 10 ft lbs = small wrench, just snug it down, nothing more. 15 ft lbs = small wrench, snug it down and then give it a little 1/8 to 1/4 turn grunt. 25 ft lbs = large wrench - tighten it down and add solid 1/4 turn grunt. When I had to do 85 ft lbs on my bike's fork spring retaining nuts it was a serious vein in the neck bulging crank-up. For aluminum threads always use a light touch. So, even if I can't fit the torque wrench in I still look up the spec so I know what the engineer is after. __________________ ... ʎɐqǝ uo pɹɐoqʎǝʞ ɐ ʎnq ı ǝɯıʇ ʇsɐן ǝɥʇ sı sıɥʇ | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |