E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 10-25-2012, 02:16 PM   #61
Mango
Grand Superpatriot Sport+
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,177
My Ride: M54B30
haha you guys.

BTW, BMW mentions in several places to NEVER lift the car using the differential. So barnyard boys can put their capes on and soar like eagles to their nearest barnfest and share ideas amongst eachother.
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 10-25-2012, 02:29 PM   #62
Zell
Registered User
 
Zell's Avatar
 
Join Date: Jun 2009
Location: Such City
Posts: 5,399
My Ride: '02 Dogemobile Shibe
Wink

Quote:
Originally Posted by E46Mango View Post
So lets say the above is true (which it's not) what's with the need for hipster lifting points? Why not use those things called "jack pads"? It even has the word "jack" in the name!
Oh brother. You're seriously going to argue that pinch welds are NOT a safe place to put jack stands? Really? Call any mechanic right now and ask them if pinch welds are okay to use. In fact, the other night I called BavAuto about this same question, and they said pinch welds are a valid jack stand location and jack point with an adapter.. They also said that even though the reinforcement plate square crushes, it is under the subframe and is more than enough to handle the weight of the car. They've got over 200 years of BMW experience. I trust their word.

What's the reason for hipster jack points? Because I can't find any other way to slide a jack stand under the rubber jack pad. That's why. I need a way to lift the car up high enough to put a jack stand on the rubber pad.

Whether you like it or not, that is a safe jack location, and pinch welds are also a safe jack location.

All it took was a few days, talking to some engineers and mechanics, and a little research to figure this stuff out.

It's not designed for jacking, but it can still work safely. That's all that matters. I don't care if I'm using something that it's not designed for: it's safe and it works.

You've yet to provide me with a compelling argument other than "BMW said so.". They've gotta save their own asses too - of course they're not goin to say "You can use these other points that aren't specifically designed for jacking but joe work anyway." They're going to say to use the exact places designed for it. The dealer does stuff by the book.
__________________
Quote:
Originally Posted by Act of God View Post
Carbon dioxide is not a "chemical"
Quote:
Originally Posted by l0e3o7 View Post
Just keep your lil boy zell on a leash; a proud self proclaimed TROLL

Last edited by Zell; 10-25-2012 at 02:40 PM.
Zell is offline   Reply With Quote
Old 10-25-2012, 02:41 PM   #63
Mango
Grand Superpatriot Sport+
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,177
My Ride: M54B30
Quote:
Originally Posted by Zell View Post
Oh brother. You're seriously going to argue that pinch welds are NOT a safe place to put jack stands? Really? Call any mechanic right now and ask them if pinch welds are okay to use. In fact, the other night I called BavAuto about this same question, and they said pinch welds are a valid jack stand location and jack point with an adapter.. They also said that even though the reinforcement plate square crushes, it is under the subframe and is more than enough to handle the weight of the car. They've got over 200 years of BMW experience. I trust their word.

What's the reason for hipster jack points? Because I can't find any other way to slide a jack stand under the rubber jack pad. That's why. I need a way to lift the car up high enough to put a jack stand on the rubber pad.

Whether you like it or not, that is a safe jack location, and pinch welds are also a safe jack location.

All it took was a few days, talking to some engineers and mechanics, and a little research to figure this stuff out.

It's not designed for jacking, but it can still work safely. That's all that matters. I don't care if I'm using something that it's not designed for: it's safe and it works.

You've yet to provide me with a compelling argument other than "BMW said so.". They've gotta save their own asses too - of course they're not goin to say "You can use these other points that aren't specifically designed for jacking but joe work anyway." They're going to say to use the exact places designed for it. The dealer does stuff by the book.
Nope. Not buying it. Again, why are you trying to get creative and make up your own jack points? Do you open your door with a coat hanger? Fill your tires with garlic-infused air? Start your car by push-starting it?

Why are you even considering alternative methods for tasks which are so easily carried out by methods that are easily and readily verifiable as safe? Are you on a mission to create some sort of alternative jacking league?

Please.
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 10-25-2012, 03:12 PM   #64
Solidjake
Zero. Oil. Leaks.
 
Solidjake's Avatar
 
Join Date: May 2008
Location: NYC
Posts: 21,832
My Ride: 2002 330i
Please. Lets go more off topic.
Solidjake is offline   Reply With Quote
Old 10-25-2012, 05:46 PM   #65
FenderGuy05
OEM ///Member
 
FenderGuy05's Avatar
 
Join Date: Oct 2011
Location: Daly City
Posts: 939
My Ride: 2002 BMW 325i
Quote:
Originally Posted by E46Mango View Post
Anything that crushes or deforms means your lifting platform isn't stable. Instability can result in injury or death. (or just plain old property damage.)

My advice is: don't.
Lifting the rear so high to get a stand under the front seems pretty dangerous though...imo
__________________
FenderGuy05 is offline   Reply With Quote
Old 10-25-2012, 05:53 PM   #66
FenderGuy05
OEM ///Member
 
FenderGuy05's Avatar
 
Join Date: Oct 2011
Location: Daly City
Posts: 939
My Ride: 2002 BMW 325i
And i'm missing one of my rear jackpoints
__________________
FenderGuy05 is offline   Reply With Quote
Old 10-25-2012, 05:57 PM   #67
Mango
Grand Superpatriot Sport+
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 22,177
My Ride: M54B30
Quote:
Originally Posted by FenderGuy05 View Post
Lifting the rear so high to get a stand under the front seems pretty dangerous though...imo
Lifting any car in general in any way is potentially dangerous. You're talking one and a half tons at LEAST.

I've never encountered a problem. If you guys feel you have a better way, knock yourself out. Nobody is stopping you! Just proceed with caution and know that any mistake you make while lifting a vehicle (regardless of method) is your own doing.
__________________
A lifetime free of problems if you follow my guides
Cooling | Maintenance | Suspension | Vacuum | Supreme Reliability | Details

OVER A MILLION VIEWS
Mango is offline   Reply With Quote
Old 11-19-2012, 08:36 PM   #68
WDE46
Registered User
 
Join Date: Sep 2012
Location: Virgo Supercluster
Posts: 8,005
My Ride: 2004 330Ci OBM
Quote:
Originally Posted by FenderGuy05 View Post
Lifting the rear so high to get a stand under the front seems pretty dangerous though...imo
I lifted my car today using Mango's method. I did this because last time I bent my front reinforcement plate using that spot. It worked, but I don't want to try it again. Anyway, Mango's method works, but it was sketchy at one point

First, I lifted the rear right and placed a jack stand under the front right pad. I then lowered the car onto the jack stand. Second, I lifted the left rear of the car. I lifted it to the limit of my jack and the front tire wasn't off the ground. I realized I was actually lifting the entire rear of the car instead of just the left side. Luckily, I merely had to pull up with about 30 lbf on the front fender and the car slowly tilted and put the right rear tire back on the ground (it was almost perfectly balanced). I put the jack stand under the left front, then I lowered the car. It was safe, but the seesawing I did was strange. I had to rock it back to remove that same jack stand later. With a full tank of gas, this would not happen probably, but neither the front or the rear of the opposite side will have much load on it until you lower the rear back down.

I would also recommend not applying the parking brake. Honestly, I would just put it in neutral w/ no brakes and double chock (front and back of the rear wheel) the wheel on the side opposite of your current lifting point. I recommend this because the rear suspension needs to be able to settle and the rear wheel needs to rotate to allow it to do this. If you leave any brakes on, then release them when the car is on the stands, it will shift itself backwards quite a bit.

My final conclusion on Mango's method is that it works just fine. The lateral forces on the jack stands are kept to a minimum provided you don't have on any brakes. I didn't lift the rear, but Mango just recommended the same place everyone else knows to use. As a side note, your jack needs to be capable of at minimum 16 inches of lift for this method to work. 16 inches at the rear will give you about 12 inches at the front. Luckily I could do 18 inches with the jack I bought.

I thought maybe I'd include some credentials though I won't prove my claim. I am a Mechanical Engineer who works in the automotive industry. I do have a very deep understanding of forces, both static and dynamic. In this scenario I simply visualized the applied forces and it seemed safe to me, so I continued (even with the seesawing action).

Last edited by WDE46; 11-19-2012 at 08:40 PM.
WDE46 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 03:09 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use