993 Jacking points and jack stand placement

[Traveller]

Originally Posted by EMBPilot

i will, as will many others and prob 90% of forum users, continue to use the engine...

Owners are free to do as they please. After all, it is their car.

But just because 90% of forums users agree upon something, doesn't mean that 90% of forum users thought it through. Its usually someone that initiates a recommendation, and the rest just follow....just like those T38s (or F16s) that followed their Thunderbird leader...right into the ground. Sort of like that billet valve cover solution to leaking valve covers.

[EMBPilot]

definitely agree Traveller, good points...
and the poster above even mentioned the motor mounts as the stress points. things to ponder. This brings us to the suspension mounting point mentioned in post #3, i hadnt seen that one before.

theres no doubt that when i lift the back of my 993, on the block, my brain is telling me "somethings wrong with this" but i do it because I have not had an issue, and i have not read of others having issues either...

[Traveller]

Originally Posted by EMBPilot

definitely agree Traveller, good points...
and the poster above even mentioned the motor mounts as the stress points. things to ponder.

Our engine hangs from those motor mounts, I believe. So they are basically holding up a part of what is a 550 pound motor (and a part of it being held by the transmission mount). Its another thing to use the motor and its mounts to hold up roughly 2/3 of our 3000+ pound cars (65% weight bias). Whether that will do any damage to the frame rails that the mounts attach to, I highly doubt it. Whether it might do any damage to the engine mounts...maybe.

Some might point out the location of the engine mount at the rear of the engine. Once again, that was designed to hold up an engine...not the other way around...to hold up a car.

What Porsche may be concerned with is the point contact area against the engine case and with a surface that uneven, how does one distribute the load?. And from what I can tell, many if not all owners using the engine to jack up their car are using the joint at the case halves. That may be thick, but the adjacent case is thin in comparison.

Once again, owners can do as they please and they may never have a problem that they will attribute to their jacking technique.

Someone kept stressing one of the training aircraft I used to instruct on. Every time I would come out of an up-to-five-turn spin and pull out with a couple of Gs, I'd hear a thud coming from the back. I brought it up a few times to the AME who joked about getting some thud remover from the local auto supply. At one of the upcoming inspections, they found a crack in the horizontal stabilizer spar. How nice...no stab...it pitches nose down. Bye-bye! Thats what happens when things are overstressed slowly but surely in time.

[P-daddy]

So Alex, how do you jack up your 993 for an oil change, etc?

[Traveller]

Originally Posted by P-daddy

So Alex, how do you jack up your 993 for an oil change, etc?

I use the right rear jack pad. I only need so much clearance. Once the majority has drained, I use shallow pans and lower the car to get those last few drops.

I've done all of my maintenance and underside detailing shown on my site using a single hydraulic jack and a piece of 6 x 6 lumber. The MaxJax will be coming...soon hopefully.

[P-daddy]

Thats pretty damn impressive. Im a slim guy but I need the car up high especially when trying to replace the small filter.

Quote de P-daddy

So Alex, how do you jack up your 993 for an oil change, etc?

I use the right rear jack pad. I only need so much clearance. Once the majority has drained, I use shallow pans and lower the car to get those last few drops.



I've done all of my maintenance and underside detailing shown on my site using a single hydraulic jack and a piece of 6 x 6 lumber. The MaxJax will be coming...soon hopefully.

[bri450sl]

This is the first I've heard that jacking it up like this may be bad for it. Not sure how else I would do it other then the procedure with a block under the front spare tire area. I'm not too keen on that idea, however. I would love to just use one jack point, but I do not see how I would replace the center oil filter as someone else have mentioned.