OK - I've read the archives but still don't have an answer I can work with.

The handbook specifically says don't jack the engine, gearbox or diff. So those are definitely out.

It also says that the rear jacking and stand points are within a few inches - so how do you get the stand in with the jack almost exactly underneath? Will the rear raise enough if you jack the front? Are there any other Porsche-approved stand points on the suspension?

Confused,
Roly
'90 C4

 

I jack my 993 under the engine crankcase. (see the image from p-car.com, which by the way, gives you lots of good DIY information, including jacking the car up. It's for 993, but I'm sure many of those apply for 964 also):


And many (including Steve Weiner) have said that they've done it for over 20 years with many different 911s without any problems.

 

[quote]<strong>And many (including Steve Weiner) have said that they've done it for over 20 years with many different 911s without any problems.</strong><hr></blockquote>
One consideration, however, is that through 1989, pre-964, there was an oil sump plate, which made a great place to jack the engine, as it spread out the load on the case halves.

In the 964 factory manual, Porsche does detail in the engine section how to support the engine for lowering, which entails a steel plate supporting each heat exchanger, coupled to another fixture supporting the crankcase itself.

 

Roly - I've been where you are, and you just can't get a consensus on what should be one of the most simple questions. It's basically impossible to use the jackpoints for anything other than a single tire change. Even getting at those with a floor jack can be difficult if your car is lowered.

I called the friendly gurus at EPE here in Boston - they said to just center the floor jack under the case and go straight up. I gather they commonly do this at trackside. A 2x6 wood plank across the width of the engine and including the heat exchangers (similar to Bill's picture) would spread the load and cushion the case. It just isn't clear that there are other options short of installing a hoist in the garage

Good luck.

Mike
'91 C4

 

Just a suggestion... I use a rubber hockey puck centered in the cup of my floor jack. It works great at all jack points (even under the engine) and is kind to my car. They are cheap (cheaper in Canada, I suppose!) Just my two-bits.

 

On my 964 I raise the car from the jack point infront of the rear wheel. I place the rear jack stand inside of the rear wheel under the suspension at the spot where there is a circle protruding from that big suspension peice that conects to the wheel. The front jack stand go in the normal place. I also use an old hockey puck on my jack so it easier on the car. Hope that helps.

I don't lift using the engine case but my wrench does. He said if you do it wrong it is about $10,000 , I like him but not that much.