» Site Navigation | | » Recent Threads | | | 1999 M3 Swap 09-07-2023 10:10 PM 06-01-2024 03:04 PM 7 Replies, 425,493 Views | | | | | | | 02-27-2011, 11:18 PM | #61 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | It should be fine for a little while as long as you take it easy and don't romp on it too hard. | | | 02-28-2011, 02:42 AM | #62 | Senior Member Join Date: Sep 2007 Location: asdfasdf Posts: 10,002 | Quote: Originally Posted by 318ti808 The PP seller is willing to help out by swapping in a M3 coup rear setup or the appropriate diff from a 325i. | unless those are parts out of an E30 they won't work in the ti | | | 03-01-2011, 07:30 PM | #63 | Senior Member Join Date: Apr 2005 Location: Henrico, VA USA Posts: 231 | Slow man...brain wise... Okay, lt me get this straight as I have heard all sorts from all sorts of places. I have a 3.73LSD medium case out of an e30 325 that I want to put in my 96 318ti. It seems reading it all here that my best bet is the 3.73, using e30flanges, e30 halfshafts and e30 stub axles, shimming the ABS and thats about it, am I right??? Do I have to change bearings or anything for the stub axles, or just remove the nut and swap with new retainer? Sorry if I sound ignorant but i am on this one as if a fool listens to too many fools he is follish, and it seems this is a very good source for the staright story. Dave | | | 03-01-2011, 08:23 PM | #64 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | Quote: Originally Posted by maverick Okay, lt me get this straight as I have heard all sorts from all sorts of places. I have a 3.73LSD medium case out of an e30 325 that I want to put in my 96 318ti. It seems reading it all here that my best bet is the 3.73, using e30flanges, e30 halfshafts and e30 stub axles, shimming the ABS and thats about it, am I right??? Do I have to change bearings or anything for the stub axles, or just remove the nut and swap with new retainer? Sorry if I sound ignorant but i am on this one as if a fool listens to too many fools he is follish, and it seems this is a very good source for the staright story. Dave | You're good Dave, that's everything you need to do and the diff should work fine. I'm pretty sure you'll need the e30 speed sensor and you should also change the gear oil and rear cover gasket. Since your car is a '96, you may or may not need to hammer the cross beam under the floor pan. | | | 03-24-2011, 04:34 AM | #65 | Senior Member Join Date: Jan 2010 Location: Oakland Posts: 187 | I have a 95ti with some random open diff in the back, I'm pretty sure its rubbing on the floor (ie no hammering done) because you can "hear" the engine rev from the trunk, its quite amusing... does anyone have a chart of which diff ratios give you what engine speed at 65 mph? __________________ 96 Schwartz II 318ti M-Sport with M44 *SOLD* 95 Hellrot Red 318ti with S52 Swap (Mine) 94 Boston Green 325i Saloon with M50TU (Hers) 68 White VW Bus Camper (Parts Bus) 71 Pink VW Bus Westfalia (The fixer upper) | | | 03-24-2011, 09:28 AM | #66 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | Quote: Originally Posted by kuleinc I have a 95ti with some random open diff in the back, I'm pretty sure its rubbing on the floor (ie no hammering done) because you can "hear" the engine rev from the trunk, its quite amusing... does anyone have a chart of which diff ratios give you what engine speed at 65 mph? | random open diff? did someone swap out the original? You say it's rubbing on the floor, so i'm assuming it's a medium case. There's usually a tag attached to the rear cover which will have the ratio stamped on it, but you can also jack both wheels up, put it in nuetral, spin the driveshaft and count how many rotations it takes to make the wheels spin one complete rotation. Obviously, make sure the car doesn't fall on you since it will be in neutral and the parking brake will be disengaged. As for finding out ratios vs speed vs rpm, just do a google search for a "BMW final drive calculator". | | | 03-24-2011, 02:19 PM | #67 | Senior Member Join Date: Jan 2010 Location: Oakland Posts: 187 | I was hoping to find a chart to look at __________________ 96 Schwartz II 318ti M-Sport with M44 *SOLD* 95 Hellrot Red 318ti with S52 Swap (Mine) 94 Boston Green 325i Saloon with M50TU (Hers) 68 White VW Bus Camper (Parts Bus) 71 Pink VW Bus Westfalia (The fixer upper) | | | 03-24-2011, 03:24 PM | #68 | Senior Member Join Date: Apr 2007 Location: Elizabeth City, NC Posts: 3,877 | The speed depends on the transmission ratios, diff ratio, and tire size. I don't think you'll find a chart. I have a spreadsheet that calculates everything if you search google like Jess said you'll find it. __________________ ~Dave~ 98 328ti Morea Grun slicktop 11 128i space gray slicktop 13 JGC WK2 Deep Cherry Search | RealOEM | | | 03-24-2011, 03:48 PM | #69 | Senior Member Join Date: Jan 2010 Location: Oakland Posts: 187 | Im thinking 3.45 or taller, just worried the car will be too slow, or too droany on freeway. It's hard to choose when u haven't tried each ratio.... __________________ 96 Schwartz II 318ti M-Sport with M44 *SOLD* 95 Hellrot Red 318ti with S52 Swap (Mine) 94 Boston Green 325i Saloon with M50TU (Hers) 68 White VW Bus Camper (Parts Bus) 71 Pink VW Bus Westfalia (The fixer upper) | | | 03-24-2011, 09:08 PM | #70 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | Quote: Originally Posted by kuleinc I was hoping to find a chart to look at | Did you even search? I just googled "BMW final drive calculator" and this was the second on the list of hits: http://www.bokchoys.com/differential/GearRatios.htm Find 318ti auto or manual(whichever one you have), plug the numbers into this calculator(4th on the list of hits) http://www.google.com/url?sa=t&sourc...hImdmmznsLXGRQ click "recalculate" and you should see a chart with speeds listed according to RPM and transmission gear. Here's what it looks like, however your results may vary depending on YOUR tire size and final drive ratio: | | | 03-24-2011, 09:32 PM | #71 | Senior Member Join Date: Jan 2010 Location: Oakland Posts: 187 | I'm at work with my phone, I'll search or check it out when I get home tonight __________________ 96 Schwartz II 318ti M-Sport with M44 *SOLD* 95 Hellrot Red 318ti with S52 Swap (Mine) 94 Boston Green 325i Saloon with M50TU (Hers) 68 White VW Bus Camper (Parts Bus) 71 Pink VW Bus Westfalia (The fixer upper) | | | 05-08-2011, 11:19 PM | #72 | Senior Member Join Date: Feb 2011 Location: NJ USA Posts: 159 | About to do a swap. Need dif advice please Hey, guys. I just read this whole thread. Very informative. I'm a noob so please bare with me. I have a stock '96 Ti active. I"m about to purchase a Z3 2.8 engine and a ZF trans from an M3 complete with clutch and drive shaft. I gather I can't use either difs from my ti or the donor M3. I'm Looking to get an LSD dif. 1. Can I use a Z3 6 cylinder dif and if so which ratio would be best and easiest to bolt up? I'll be using both 16 and 17 inch rims with low profile tires. 2. What kind of gearing would a 3.15 from a Z3 give me with this setup? 3. Should my hybrid drive shaft be from my existing ti and an M3, 328 or Z3? I really don't want high rpms at speed or the opposite. This will be my dd as well as autox and some track. Your thoughts are appreciated. Thanks in advance Last edited by RCV7; 05-09-2011 at 03:14 AM. | | | 05-09-2011, 12:36 AM | #73 | Senior Member Join Date: Apr 2005 Location: Henrico, VA USA Posts: 231 | Quote: Originally Posted by RCV7 Hey, guys. I just read this whole thread. Very informative. I'm a noob so please bare with me. I have a stock '96 Ti active. I"m about to purchase a Z3 2.8 engine and a ZF trans from an M3 complete with clutch and drive shaft. I gather I can't use either difs from my ti or the donor M3. Can I use a Z3 dif and if so, auto or manual and which ratio would be best and easy bolt up. I'll be using both 16 and 17 inch rims with low profile tires. I really don't want high rpms at speed or the opposite. This will be my dd as well as autox and some track. Your thoughts are appreciated. Thanks in advance | You can use the one from the Z3 if it was a 6-cyl car as if a 4-cyl likely the same diff in the ti and it will fail more than likely with a 6-cyl feeding it. The ZF I am not sure about as may change the drive shaft length, maybe someone knows more on that than me. If you don't want revs and the ZF is a 5 speed you want a manual diff and likely no more than a 3.23 or somethin in that area. If you want more power then you have to deal with higher revs. Some body else can refine this maybe. Dave | | | 09-12-2011, 06:38 PM | #74 | Senior Member Join Date: Nov 2009 Location: Maryland Posts: 265 | ok. so how big of a hammer do i need to beat in the subframe? i have a 4 pound maul i tried, and it didn't cut it. thanks, john __________________ Quote: Originally Posted by bubela I’m happy in my blissful ignorant euphoria! Simple man, simple mind, bigger hammer! | 1996 318ti base 1996 Land Rover Range Rover- blew up 1996 Sabb 900 convertable - sold | | | 09-12-2011, 11:00 PM | #75 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | Quote: Originally Posted by bmorekirby ok. so how big of a hammer do i need to beat in the subframe? i have a 4 pound maul i tried, and it didn't cut it. thanks, john | Hey John, don't beat on the subframe, it's the floorboard above the subframe that hits on older models. | | | | | 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 | | | |