Welding to cast iron on regular jack stands for pin mount.

So are the pins attached to the tops of the stands? How far into the body do they go, and is there just the heavy outer plate on the body through which the pins are inserted, or do they go through a 2nd inner plate too?

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starion887
So are the pins attached to the tops of the stands? How far into the body do they go, and is there just the heavy outer plate on the body through which the pins are inserted, or do they go through a 2nd inner plate too?

When I's dood 'em I run the tube they poke into all the way thru the sill/rocker and did a spreader where they poked thru..and capped them of course so about yay long thru the sill.

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Quote
starion887
So are the pins attached to the tops of the stands? How far into the body do they go, and is there just the heavy outer plate on the body through which the pins are inserted, or do they go through a 2nd inner plate too?

The pins are 7.5" long including the part that sits on top of the jack stand. They go the entire way through the sill and there's a plate on the inside which the DOM is welded to there as well.

In the front there's a bigger piece of steel inside that it goes through that I welded it too as well, so there's really 3 plates in the front. The rears didn't have anything like that so its just the inner and outer.

The pins are welded to the top of the stands. However I put the weight of the car on the pins and stands before I tacked it. So all the weld is really doing is holding the pin in its proper place. Its not a weld that is necessary to hold up the car if they fail.






Edited 2 time(s). Last edit at 11/26/2013 06:47AM by czwalga.

double post.



Edited 1 time(s). Last edit at 11/26/2013 06:47AM by czwalga.

OK, good, that answered the question. The multiple support points of the pin's tube in the car takes all of the torque on the pins and off of the stand top welds. That was the question; looks good! Can't think of why they would not hold for a lifetime!

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starion887
OK, good, that answered the question. The multiple support points of the pin's tube in the car takes all of the torque on the pins and off of the stand top welds. That was the question; looks good! Can't think of why they would not hold for a lifetime!

Yeah it should be good. I like the idea of adjustability, I can get the car pretty high since they are 24" stands which is nice for washing the underside.

The cool thing I like is really you can just jack the car up a little slide the stands in and if you want to keep going higher the stands adjust themselves.

And as with all car supports, we hope that 'last for a lifetime' means for your natural lifetime....