 » Site Navigation | | | | » Recent Threads | | | | | | | | | |  |  |  |  03-21-2006, 12:37 AM | #1 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |  M52 + ti Tranny doesn't fit
Howdy all,
Finally getting this thing together, and it looks like with the engine bolted in with standard engine mounts with the stock tranny, the stock gear shift lever ends up too far back to fit through the hole in the transmission tunnel.
My mechanic's thought was there was a different gear selecter and shift rod for the 6 cylinder cars (they list different part numbers), although I've never heard of anyone having to change those to get them to fit.
Any of this make any sense? __________________ Andy Chittum - Mad Man Motorsports |  |  | | 03-21-2006, 09:30 AM | #2 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
It makes perfect sense. The engine sits rearward about 1.100".
The shifter mount and linkage need to be shortened the appropriate ammount (1.1" is from memory, check the actual on your car).
Once this is complete, you are done. | | | | | 03-21-2006, 08:41 PM | #3 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |
Okay, that makes sense; about an inch is what we're off. Do you know offhand if the 6 cylinder selector rod and shifting arms are shorter than the ti pieces? The catalog lists them as different pieces, but without them in hand, it's difficult to tell.
The next step appears to be the drive shaft; that's also a bit long. The catalog lists the lengths of the different shafts though, makes it easier to fix. __________________ Andy Chittum - Mad Man Motorsports | | | | | 03-22-2006, 10:27 AM | #4 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
Quote: | Originally Posted by andy Okay, that makes sense; about an inch is what we're off. Do you know offhand if the 6 cylinder selector rod and shifting arms are shorter than the ti pieces? The catalog lists them as different pieces, but without them in hand, it's difficult to tell. | I'm not sure- I have not had an M3 tranny at any point, only the ti. I had the parts modified per my measurements and they work perfectly. Quote: | Originally Posted by andy The next step appears to be the drive shaft; that's also a bit long. The catalog lists the lengths of the different shafts though, makes it easier to fix. | With the ti tranny, I kept the ti drive shaft despite the fact that the tranny mounts further back. It fit no problem. If the M3 tranny is used, the M3 drive shaft must be used. The M roadster shaft is too short in all cases. Other than that, I don't know any more about drive shaft fitments. | | | | | 03-23-2006, 12:06 AM | #5 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |
J!m,
Okay, thanks for the info. I'm going with a standard e30 sized (188) diff + coupe cover, so I'll install that, make measurements, and go from there. The 180 diff's input shaft is about 1cm longer than the 168, too.
From what my mechanic is saying, the shaft will fit, however, it leaves no play in it, which is primarily necessary to make it easier to do any potential maintenance in the future. Given the ti shaft is 1544mm, and the 325is / ti shaft is 1512mm, that seems to make sense too.
Thanks again! __________________ Andy Chittum - Mad Man Motorsports | | | | | 03-27-2006, 09:47 PM | #6 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |  Shifter success
Just a followup - I switched to 325 parts for the shifter and it fits just fine now.
So, for future reference:
M5x + Getrag Transmission (ti, 318, 325) = get 325 shifter parts!
01 SHIFTING ARM 1 25111221541 $19.31
09 STRAIGHT SELECTOR ROD 1 25111222664 $18.30
Next step will be shortening the drive shaft.
J!m, has your transmision held up well? How often has your been car to the track? __________________ Andy Chittum - Mad Man Motorsports | | | | | 03-28-2006, 09:10 AM | #7 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
Since I've done the swap I have not tracked the car.
I hope to get some auto-x in this year at least, but with the aero kit finally being completed, I'm eager to do some big tracks too.
By the way, I did not shorten my drive shaft. I use the ti shaft with no problems... | | | | | 03-28-2006, 10:46 PM | #8 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |
Okay, well, we'll see how it goes. About the driveshaft, I think it might be one of those 'just fits' vs a 'fits just like factory' situations. Here's what I found on that: 1512mm - 325is, 323ti 1544mm - 318ti 1561mm - 318is (e36) My mechanic was concerned about the longer ti shaft binding up or making it more difficult to service in the future if he used the longer shaft, although it could fit as long as it was assembled before the transmission was put in. He did have a nearby place that can easily cut the shaft down, so we just sent it there for some quick adjustment. I'll repost on the final measurements when it comes back today. Engine fired for the first time Friday, and with any luck I'll bring the car home in the next few days. Then I'll have to see about upgrading the brakes. :-O Oh - and I finally got the diff working too - see the 'diffs' section for findings there.  __________________ Andy Chittum - Mad Man Motorsports | | | | | 04-04-2006, 01:11 PM | #9 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
Good work regarding the drive shafts...
I've had mine in for a few years now, with no problems to report. The tranny was in before the drive shaft was installed. Again, no problem.
I'm about due for a new guibo, so I may get a new driveshaft and center bearing as well to go along with it.
Do you have pricing for the drivesahfts (list is fine)? | | | | | 04-04-2006, 01:22 PM | #10 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
Further, if it wouldn't be too mutch trouble, could you provide part numbers as well?
Finally, if you have any other drive shaft data I'm interested (or where exactly to get it) as I like to have this type of data for engine swap work.
Thanks again. | | | | | 04-05-2006, 06:57 PM | #11 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |
Hi J!m,
We actully modified the original driveshaft, and (unlike everything else with this project!) it came back from the shop that did it and fit right in. I can crawl under the car and measure it if you like (probably this weekend) and post measurements, not a problem. IAC, it wasn't that expensive to get done.
IIRC, you're using the M Coupe / Roadster diff; I don't recall if that's the medium case (188) diff, but if not, sizing might change slightly for that; the input shaft on the 188 diff was slightly longer than the input shaft on the stock 168 diff.
The project is finally up and running now, and aside from the shifter angled slightly more rearward than before, everything works great. I think slightly longer shift pieces or perhaps just a quick strategic bend in the shifter itself will angle it perfectly - it wouldn't even be worth mentioning, except my race seat limits my arm movement somewhat.
I'll try to post some pics soon as well. __________________ Andy Chittum - Mad Man Motorsports | | | | | 04-05-2006, 08:48 PM | #12 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
I installed the drive shaft with the ti diff in place, then a week later, replaced the sub frame.
So, I don't know how much things (IE drive shaft length) were affected, but again, no problems to report.
Where did you get that drive shaft length data? Was there any part number data to go along with it? I'm very interested in having that for my records (and for ordering, if I find my drive shaft is a bit long).
Thanks again. | | | | | 04-06-2006, 10:40 PM | #13 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |
Quote: | Originally Posted by J!m Where did you get that drive shaft length data? | Oh I see. It's listed along with the part numbers on realoem.com: http://www.realoem.com/bmw/showparts...63&hg=26&fg=05 No. Description Supplement Qty From Up To Part Number Price Notes 01 DRIVE SHAFT ASSY FIVE SPEED GEARBOX L=1544MM 1 26111227937 $666.81 I'm actually kind of curious to see how my custome one differs now too... __________________ Andy Chittum - Mad Man Motorsports | | | | | 04-06-2006, 10:48 PM | #14 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
OK, cool.
I'll enter a bunch of different cars and collect the data I need. | | | | | 04-06-2006, 11:08 PM | #15 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
OK. Here's the "official" list...
M coupe/roadster = 1240mm
328i / M3 = 1492mm
(these have different part numbers, and the M3 drive shaft comes in 2 flavors, U-Joint and CV joint)
323ti = 1512mm
318ti = 1544mm
318is = 1561mm
All data based on 6/98 model year
Enjoy! | | | | |
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