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We can lift the car from the ridge of the engine but I would not do it. These cars are 30+ years old and joints are not tight as when they were new. The force applied at that single point (about 1500 lb) will distort the whole engine. Ferry Porsche did that... of course he did, he was developing those cars and he would not concern himself with issues we do.
Old 06-08-2018, 09:46 AM
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We can lift the car from the ridge of the engine but I would not do it. These cars are 30+ years old and joints are not tight as when they were new. The force applied at that single point (about 1500 lb) will distort the whole engine. Ferry Porsche did that... of course he did, he was developing those cars and he would not concern himself with issues we do.
…. And not to mention that if the motor does get damaged, he would just go to HIS factory and get another.
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Old 06-08-2018, 09:58 AM
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It is very easy. My jack rolls very easily with weight on it. With the rear end in the air, I was able to move the back of the car into the next stall and the front wheels followed. I was able to easily do it myself.
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Old 06-08-2018, 05:17 PM
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I think there is a little paranoia about the engine getting damaged by lifting the back of the car by jack ...

Somebody show us if you can find at least one engine which was affected by the lift....
I would love to see that.....never ever i have even heard of this ,somebody proof me wrong...
please, the engine is a solid structure stop worrying about the bearings or anything else inside...


Ivan

85911... i believe you it is all about the technique how to use your jack...
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Old 06-09-2018, 12:14 AM
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Before I got a scissor lift, I jacked my car up all the time from the case. Never an issue. However I used a piece of 1/4" thick recycled plastic between the jack & the case to protect it. Worked great for years.
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Old 06-09-2018, 05:49 AM
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I think there is a little paranoia about the engine getting damaged by lifting the back of the car by jack ...

Somebody show us if you can find at least one engine which was affected by the lift....
I would love to see that.....never ever i have even heard of this ,somebody proof me wrong...
please, the engine is a solid structure stop worrying about the bearings or anything else inside...

Ivan

85911... i believe you it is all about the technique how to use your jack...
There are thousands of 911s still in service with oil leaks, many from the crankcase. Is this a direct result of using the engine as an unofficial jack point? I don’t know. Some leak there. Some don’t. Can anyone disprove there’s a connection?

BTW, the engine is not “a solid structure”, as much as we’d like to imagine.

I’m not on a crusade. I merely stated my humble opinion, not a pronouncement. Once again, YMMV.

Sherwood
Old 06-09-2018, 08:12 AM
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peace Sherwood.....
btw ,did you like my explanation regarding the picture with Butzi?



Ivan
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Old 06-09-2018, 08:51 AM
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peace Sherwood.....
btw ,did you like my explanation regarding the picture with Butzi?

Ivan
You mentioned Erwin Konenda next to Butzi, and he disappeared later on. Was it because he questioned Butzi about jack placement? 😯

I have a similar, tech-under-the-car photo I’ll post later.

Sherwood
Old 06-09-2018, 09:38 AM
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Very funny about the jack...

Yes Erwin ..he did some more designs but as i have read he got into trouble with Porsche family.All his ideas and plans are locked up away in Family safe....

Ivan
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Old 06-09-2018, 09:51 AM
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...............
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Last edited by proporsche; 06-09-2018 at 10:01 AM..
Old 06-09-2018, 09:56 AM
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For 25 years I have been confidently jacking against the ridge at the bottom of the engine case, just behind the sump plate.
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Old 06-09-2018, 10:34 AM
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Sherwood..if you do not know who is on the picture i can tell you.
On the left is Erwin Komenda exceptional designer who did design VW bug and Porsche 356..also had a big share designing 901 but had a fit with Porsche so he is nowhere mentioned...even-thou he worked with Porsche for 30 years
On the right is Ferdidnand Alexandr Porsche..Butzi

Ivan
Not to get off topic but I think there is some confusion going on as to who is who.
The photo has been around for years but it sure looks like Ferry on the left.
Here's Erwin and Ferry next to each other.
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Old 06-09-2018, 12:27 PM
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Kurt ,you might be right i could be wrong....
Ivan
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Old 06-09-2018, 12:42 PM
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Using the engine to lift the rear end has been a long-term POV favored by many pro repair techs, racers and owners. As a contrary point of view, I and others have disagreed, hopefully without sounding too evangelistic.

Here's an interesting update.

At the most recent 2018 Rennsport, Porsche Motor Sports (PMS) displayed a new product, a new 962 flat six crankcase casting. Seems there are still enough of these vehicles to provide replacement parts to keep them alive and well (notice the factory has recently recognized the thousands of vintage Porsches still in service with air cooled dealer service and parts? That's wise, long-term owner relations). The new low-pressure casting had some unspecified improvements in material and oil flow (I also assume structural improvements).

So I popped the question to the tech (GS):
"What's your opinion about lifting the rear of a 911 or under this 962 case with a floor jack on the center case seam, with or w/o a hockey puck, block of wood, telephone book, shop rag, etc.?"

His answer. He wouldn't advise it. The block wasn't designed for those forces (and I bet never considered by their engineers).

BTW, here's a basic comparison between a 962 and a 911 case. Not really that different.
https://rennlist.com/forums/996-gt2-gt3-forum/308447-comparison-of-gt2-3-turbo-engine-to-the-962-engine.html

There you have it, FWIW. So have at it.

Sherwood
Old 10-18-2018, 04:45 PM
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