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Old 02-22-2004, 05:52 PM   #1
Carnot
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Default Jackstand blocks for stock jack points

I have heard a lot of solutions to use jackstands on the stock jack points without bending the pinch weld. I have not however seen any good pictures, or heard of any solution that I felt comfortable with. So I built my own. I have Craftsman 3 ton jackstands, so I built by blocks to work with them.

The first thing that I did was slot the wood. I just used some 2X4 I had lying around. I used several passes with my cordless trim saw to cut a notch 1/2" wide and 3/4" deep. This is big enough for the pinch weld to fit snugly into without resting in the bottom.

For the next step, I found that the round part in the bottom of the stand cradle has roughly the same radius of curvature as 2" steel pipe. So I used a reciprocating saw to cut some pipe. I cut the length to be the same as the width of the 2X4. Then I cut it length wise so that it was about a 90 degree arc when viewed from the end.

The next step was to create the notches int he wood that were needed for the outer part of the jackstand cradle. To do this, I clamped my two pieces of wood back to back in a vice. I then used a 3/8" butterfly bit to very slowly drill directly where the two pieces met. The idea is to create a semicircular furrow for the cradle to fit into. Ideally, I would have a drill press for this, but I don't so patience and a keen eye did pretty well.

All that is left is to attach the pipe section to the block. I just drilled a couple of holes and screwed them in place.

I've only tried them once so far, but it was an outstanding success. It was very stable and with the pipe section underneath to support, the load is very evenly distributed to make sure the wood doesn't break.

Pictures:



-Bryce
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Last edited by Carnot; 02-22-2004 at 06:48 PM.
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Old 02-22-2004, 06:28 PM   #2
Psydotek
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Default

I was thinking of making some blocks like that with the slot for jacking up the car. Nice stuff you got there though.
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Old 02-22-2004, 09:27 PM   #3
vrg3
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Wow, very nicely done, Carnot!

Thanks for the detailed explanation and pictures.
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Old 02-23-2004, 06:46 PM   #4
outback_97
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That's cool, good idea!

I'm assuming you've seen this, but maybe not:
http://www.scoobymods.com/forums/sho...hlight=jacking

Works for me with no crimping of the "pinch weld", FWIW.

Steve
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Old 02-23-2004, 07:43 PM   #5
Carnot
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Default

Thanks for the feedback.

outback_97, I hadn't actually seen that particular thread yet. That's interesting. I wouldn't have thought that you could support the car there without damaging anything. I guess that's why I made the blocks.

As for the jack pad, I've had a good experience using the pad made by
Protech. It costs more than a piece of wood, but I can't put a price on peace of mind. I've heard wood break while jacking up the car and my heart rate has only just now returned to a normal speed.




-Bryce
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Old 03-11-2004, 02:12 PM   #6
HS WRB-rex
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What size pad do I need for a craftsman 3 1/2 ton jack with 3 1/2 ton stand?

Craftsman 3 1/2 ton jack with 3 1/2 ton stand
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Old 03-11-2004, 05:59 PM   #7
leecea
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Another option, as has been said many times, is a $1 hockey puck that will fit nicely into the cup of most floor jacks and will not break like wood.
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Old 03-11-2004, 07:09 PM   #8
Uncle Scotty
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I know guys that have used hockey pucks 'carved' kinda like that...
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Old 03-24-2004, 09:42 AM   #9
BlackEye
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Default I just want a garage :(

Sad Bump...
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Old 04-01-2004, 07:53 PM   #10
BIGSKYWRX
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Good idea.

Prtech also makes a saddle for side lifting- most common for changing tires at autox/rallyx/track- it's designed for unibody lifting from the side:



What I'm going to ask them if the can make the same thing for stands- they already make covers for them:



Or possibly if they are thick enough you could just put a groove in them.

Big Sky
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Old 04-04-2004, 10:20 AM   #11
Carnot
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'03 WRX Sedan PSM (Hers)

Default

It would be nice if Protech would make a pad that would work for jackstands. Until then, here is an action shot of my blocks.



I am also longing for a garage. It doesn't help matters that I've spent the last couple of days helping my friend frame up his 24x32 foot detached garage. This is the toy garage, he already has a two-car on his house. I guess I'll just sit in my apartment and sulk for a while.
-Bryce
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