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Wayne 962 Wayne 962 is offline
Author of "101 Projects"
 
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Quote:
Originally Posted by milt View Post
I guess this page is down. http://www.101projects.com/Boxster/1.htm
I can't view it.
The book is not out yet, that page doesn't exist yet.

Quote:
Originally Posted by milt View Post
Wayne, I tried the method you describe. The one problem I encountered was that once I lifted one side of the rear and placed the stand, I started to lower the jack and the opposite rear wanted to come down resulting in the front lifting off the stand. Since I was planning on using my 6T stands in the rear, I had the car up pretty high. I placed a shorter stand under the other rear lift point and let the car down. Then I got under your designated jacking point and lifted the car to square up and get the 2nd 6T stand under the rear.

So, an extra stand or suitable block is necessary to use your method. I agree that lifting the car in the center as the Bentley shows is probably not a good idea. Especially is using an aluminum "race" jack.

Now, I see the door gaps are not quite right with the car up on the 4 factory lift points. I think I'll put that 5th stand under the cross member in back with just a little pressure, not so much as to take much weight off the rear reinforced points. Just to relieve some of the stress on the body.

I plan on having the car up for a few days.
I raise the car up above where I want the jack stands to be, and then place both of them at the same time at the same height. If you have a good jack that lifts high, then this shouldn't be a problem. If you have a smaller jack that can't lift that, then you will have to do what you did - place the jack on the other side and then lift up again and readjust the jack stand.

In general, if you have the car on five-points, it may not be as stable as with four points, as it's difficult to balance completely. In reality, if the chassis doesn't flex at all, you will only be supported on three points (restricting three degrees of freedom). The car is a convertible, and it's designed to have the weight supported in four corners of the car (by the wheels). I wouldn't worry about the chassis flexing - my car was up on jack stands like this for several months.

Hope this helps,

Wayne
Old 07-20-2009, 03:40 PM
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