Roadfly.com         Roadfly Home | Features | Car Review Videos | Car Reviews | Cars For Sale | Used Car Parts Classifieds | Forum | Car Review Archives | Forum Archives Index



PDA



RoadRat
08-29-2003, 09:09 PM
When I was pulling into my driveway (turning and up a slight incline), I heard some rubbing and felt the vibration. Is this the tires against the fenders?

The car is dropped and I installed sways a few weeks ago, but this seems to be a brand new, unrelated problem.

I recreated the problem a couple of times by backing in and out of my driveway. It happens in both directions, but only when turning.

Any ideas?<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

RoadRat
08-29-2003, 09:17 PM
<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

ChuckD
08-29-2003, 09:22 PM
front or back? Go look at your half shafts in the back... did the rear swaybar arms hit the halfshafts? If they did you will see a ring arond the shaft. You will need to check both sides.

M3 Canada
08-29-2003, 09:25 PM

RoadRat
08-29-2003, 09:37 PM
dumb question, Chuck....what is a halfshaft? got a pic?<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

ChuckD
08-29-2003, 09:42 PM
they are the "drive shafts" coming out of the diffy that go to the rear wheels. The sway bar arm swings right below them before shooting up into the contol arm.

Where the sways swing below the halfshafts there usually is only a cm of clearance.. It the sways are off by a couple MM it can rub on the half shafts.

RoadRat
08-29-2003, 09:44 PM
how big of an issue is this? and how do I fix it?

I didn't realize that there was any room for error on the install....I though they fit in only one way.<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

zivagolee
08-29-2003, 09:51 PM
This pics show the rubbing of the halfshaft with the sways (this happened after I lowered the car)...

You might need to stretch your endlinks a bit more. The ChuckDsway.jpg is the good one. The other's are mine and it'll show the rub...


<a href="http://z.ziff.net/M3-swayhalfshaft/">http://z.ziff.net/M3-swayhalfshaft/</a><br>
--
2003 Orient Blue M3
SMGII
Adjustable Seat Width/Lumbar Support
Bi-Xenon
Cold Weather Package
Premium Package
Harmon/Kardon

Ground Control Suspension

Carin 520 Navigation System

Culver City, CA

zivagolee
08-29-2003, 09:52 PM
<br>
--
2003 Orient Blue M3
SMGII
Adjustable Seat Width/Lumbar Support
Bi-Xenon
Cold Weather Package
Premium Package
Harmon/Kardon

Ground Control Suspension

Carin 520 Navigation System

Culver City, CA

ChuckD
08-29-2003, 09:52 PM
It is not going to kill you.. on certain aggressive driveways it maybe unavoidable. What sways are you using? I have a pic... I'll post it in a sec.

ChuckD
08-29-2003, 09:53 PM

RoadRat
08-29-2003, 09:55 PM
<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

RoadRat
08-29-2003, 09:56 PM
the half shaft?

THANKS for the pics!!<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

RoadRat
08-29-2003, 09:56 PM
<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

zivagolee
08-29-2003, 09:59 PM
check it out.. if it IS indeed rubbing, you should see it pretty clearly...<br>
--
2003 Orient Blue M3
SMGII
Adjustable Seat Width/Lumbar Support
Bi-Xenon
Cold Weather Package
Premium Package
Harmon/Kardon

Ground Control Suspension

Carin 520 Navigation System

Culver City, CA

ChuckD
08-29-2003, 10:00 PM
the halfshaft at the same point in Z's pic.. look for any rubbing.

You don't have to lift the car... just stick your head behind the rear wheel and look up and in.. you will see it.

mike_m3
08-29-2003, 10:02 PM
since eibach's are painted red - you should be able to see marks on both the half-shaft and rub marks on the sway bar itself.
have had the displeasure of installing the same sways as you have I would find it VERY hard to believe that they would rub under any conditions (dropped or not).<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

ChuckD
08-29-2003, 10:11 PM
suspension geometry shouldn't change... just the spring height. Not knowing what the eiback sways look like installed I can't say much... but I would imagine they fit between the halfshafts and the rear trailing arm just like stock bars do..

Probably all in the design how they make their clearance.. It was just something to check.. was hard to explain.. hence all the posts. But now we have the picture...

Next thing to do, if it is not the sways, is to put the car in the driveway right where it rubs... get out and check all the fender clearances..

mike_m3
08-29-2003, 10:17 PM
<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

RoadRat
08-29-2003, 10:20 PM
ring from the rubbing, but not the right side. Keep in mind that when the rubbing happened, I was making a left turn into a driveway, so the weight was on the right rear tire, so you would think that the rubbing would happen on the right side, but the rub ring is on the left.<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

ChuckD
08-29-2003, 10:29 PM
Not good a t visulizations after a few beers but...

I think taking a left turn up into a drive way would compress the right side up... and let the left shaft droop.. right down onto the swaybar.

Maybe it shifted since the install?

ChuckD
08-29-2003, 10:31 PM
you can adjust them a little before cinching down? Maybe he has shifted a little since the install.

Don't stick you tounge out at me perv. ;-O

RoadRat
08-29-2003, 10:32 PM
me now. Go enjoy your evening and I'll mess with this tomorrow. You made me thirsty for a Rolling Rock. Thanks for all the help Chuck!<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

StMedina
08-29-2003, 10:33 PM
not from compression...but the opposite end.....

RoadRat...time to rebuild the driveway...<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

StMedina
08-29-2003, 10:33 PM
<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

ChuckD
08-29-2003, 10:34 PM
Jet says they look like 20s... did I make them too big?

StMedina
08-29-2003, 10:34 PM
<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

RoadRat
08-29-2003, 10:36 PM
<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

ChuckD
08-29-2003, 10:36 PM
No prob.. I was officialy Mediana trained.. now you are too.. glad you found it..

I am just sitting here photoshopping wheels onto cars anyways.

RoadRat
08-29-2003, 10:36 PM
about the transition at turn 1 at TWS<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

mike_m3
08-29-2003, 10:37 PM
not that I'm an expert but I just spent some quality time laying under the back end of the car isntalling eibach sways and with the back end off the ground and the wheels hanging in the air there is still a ton of room between the half shaft and the sway.
something is rotten in denmark.. especially when turning to the right and compressing that side of the suspension thus pulling up on that end of the sway and pushing down the left side. not sure how it could be screwed up on install either unless something came loose - otherwise there is really no way to install it incorrectly...<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

mike_m3
08-29-2003, 10:39 PM
the bushings pretty much sit right at the bend in the sway so there really is not room to move (or should not be)<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

mike_m3
08-29-2003, 10:40 PM
you never been to latrobe pa have you - to visit that rolling "brook" of theirs? nah...<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

mike_m3
08-29-2003, 10:42 PM
:-P<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

StMedina
08-29-2003, 10:42 PM
links are too short...

the stiffer the sways, the less they like extreme angles, just a part of the package...

The GC sways, complain whenever the angle of attack gets too abrupt...they're trying like mad to keep the wheels both on the ground...

I've scratched the half shaft before, but all it took was to lengthen the links.....by the way, it only happens on one driveway....big big angle....since I've adjusted link length, no rub...

<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

ChuckD
08-29-2003, 10:43 PM

StMedina
08-29-2003, 10:44 PM
surprisingly....
<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

StMedina
08-29-2003, 10:44 PM
<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

StMedina
08-29-2003, 10:45 PM
adjustable links....he got them from GC ...I think.<br>












<img src="http://members.roadfly.com/stmedina/snooksmall.jpg">

<font color=#660000><font size=1><font>

ChuckD
08-29-2003, 10:56 PM
<img src="http://members.roadfly.org/chuckd/119-1975_IMG.jpg">

:P

mike_m3
08-29-2003, 11:06 PM
<img src="http://www.one-step.com/webpics/205.jpg"><br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

meem
08-29-2003, 11:06 PM
pictures of snook's [Oops!].
<br>--
<img src="http://members.roadfly.com/meem/m3-sig11.jpg">
2003.5 imola red m3 coupe || 2001 amulet red tt coupe

ChuckD
08-29-2003, 11:07 PM

ChuckD
08-29-2003, 11:09 PM
I can make it my sig if you like???

mike_m3
08-29-2003, 11:11 PM
meant left side compressed when turning right - i is a college graduate...
though the design is pretty much identical to oem - just thicker - unless you think the additional stiffness of the bar could cause that much more offset and movement on the endlink (my favorite M3 part)?<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

meem
08-29-2003, 11:12 PM
but i'd save that as an idle threat when you need something from me in the future.
<br>--
<img src="http://members.roadfly.com/meem/m3-sig11.jpg">
2003.5 imola red m3 coupe || 2001 amulet red tt coupe

RoadRat
08-29-2003, 11:14 PM
<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

RoadRat
08-29-2003, 11:15 PM
up early and driving out to CS for a one day DE, but looks like I will be driving out to Dave's to get this sway issue resolved. Should be almost as fun :P

F-birds tomorrow night in Houston now.<br><img src="http://members.roadfly.com/roadrat/x05.jpg" height=150 width=305>

mike_m3
08-29-2003, 11:18 PM
or you'll be switching bands<br><br><br><br><center><a href="http://m3.madrussian.net"><img src="http://osbdesign.com/webpics/m3v2.jpg" border=0></a><br><br><br>

CBsaksiri
08-30-2003, 12:13 AM
when i jack up my car there is clearance at full droop. (with GC Koni shocks)

txse46m3
08-30-2003, 12:55 AM
I can't sleep, despite being exhausted, so I might as well explain what's the dealio, yo.

You have lowering springs and stock shocks. Lowering springs bring the halfshaft closer to the sway (wheel hub is not any closer to the ground, but the differntial is...so the sway must be too as the angle flattens...the halfshaft also rides further into the diffy). You have stock shocks, which allow a travel longer than is required with the lowered springs (the arm will out-travel the shocks length even...just ask anyone who has disconnected the shock with the wheel off the ground...)

The net effect is that the halfshaft is closer to the sway than stock, but you have stock,long suspension travel...making it possible to hit the halfshaft in extreme circumstances. I cant imagine this happening when all four wheels are on a plane. When you hit the transition at TWS...if you are coming from the high side, you'll have the car perpindicular to the transition...or real close...no worries. If you run the low line (yeah..like you have the brass for that (i don't)) the transition will be smooth as butter. and the suspension wont be compressed.

End result = dont worry. Not gunna happen unless you f*ck up real bad...in which case you have bigger problems. Low speed in/out of driveways shouldnt be a big deal cuz the load is so small.

Steve's GC's used to rub like a sonofabitch when he went to the gym...how many track miles did he put on with the halfshafts rubbing on driveways? A ton.

Read this early...go to TWS...beat UMP's 1:53...it can be done...

BTW...the best solution here is to buy Steve's used Koni DA's so he can step up to a full race shock...<br><img src=http://www.dillehay.org/images/haha.gif height=98 width=152>

txse46m3
08-30-2003, 10:18 AM
didnt get them from GC either...bought before JM carried them...direct from Eibach.<br><img src=http://www.dillehay.org/images/haha.gif height=98 width=152>


Roadfly Home | Car Reviews | Forum Archives Index