With a four post you just drive right on and lift. Much more stable, lot less chance of the car moving around. 4" slab is fine, 2 post usually spec 5-6". Two post you gotta pull up hopefully in the right spot and then get all the arms set before you can lift. I've seen a few cars slide off of them. I used them a lot and the average home builder will probably be better served with a four post, most don't even have a thick enough slab to safely mount a two post.

I agree, I just prefer a 2 post for a majority of work. Four posts just get in the way constantly. Look at any auto shop, the only rack in the place that is a four post is the alignment rack.

For storage and small projects, 4 post.

Its going to be used for 99% car storage 1% changing the occasional wheel.

John that rocks! Let me know if you need any info on modifying the garage door. I actualy just replaced my garage door spring last night, so good opportunity to go through everything again.

Did you buy the lift from Barry in Hayward? They are great to work with.

Gui

Me too! :confused18:

I've built several cars with my 4 post. I use a jack tray when I do wheel/brake and suspension work. Be nice to have both but for me the 4 post does the job and I pick up an extra parking spot in my garage.

You can park under the 2 post as well.

I'm posting this reply because LOTS of people read these threads.




Being "stable" is lift dependent.... a cheap 4 post rack is a cheap 4 post rack - same as a cheap 2 post. My buddy was almost killed and destroyed 3 cars when the 4 post in his shop collapsed.



The COWL should line up with the 2 post uprights in an Asymmetric lift. That's pretty easy to do...


When I'm doing any work that will require "shaking" --- or any work such as lifting a transmission into place - or fussing with a rear end (on my hydraulic air driven tranny jack) I place adjustable under lift safety stands under the vehicle so that I don't accidentally push the car right off the lift! It's easy to be concentrating on the job at hand and not realize you're lifting the car!


http://www.harborfreight.com/automot...and-60759.html


Sometimes a buddy will come over so we can check their suspension settings and we'll use the tranny jack to lift and drop the rear end looking for bind or listening for noises etc.... and these stabilizers really come in handy for that!

Your pro-touring car must be more reliable than mine was...:peepwall:

Agreed, Greg. The car should be lowered onto the locks and a support utilized when you remove major weight or shake the car. The reason you lower them onto the locks is one side can lose hydraulic pressure and that can get ugly. Especially when it's for an extended time.

I worked as a line tech for a few years and saw 1000's of cars lifted on two posts. I can recall 2-3 that ever fell off. All operator error...

No I don't regret not ordering the jack...probably because I have a Rotary 2 post to do work on, the 4 post is for storing cars:lol:

I couldn't afford to pour my 8" thick garage floor of "6sack" concrete today (required for strength for the 2 post lift) I still remember the big concrete pumping rig showing up in my neighborhood to do the pour...guy asks me can I pull onto your driveway? Hell No! You'll crack it! was my response, the guy at the end of the hose was having a bad day, he fell about 3 times during the pour.