Hi there,

As title, my friend is off for a long vacation and he lend me his shop for two months, so i decided to start my spot welding process for subframe.

i have all the tools i needed, I have taken welding class so technically its not a big deal on skill part, but then im very concern about the process/procedure.

Now i know i have to complete diassamble the car, this will take 2 days to 3 days top. then i would have to wash the frame clean i suppose? expecially on the welding spots.

now it comes to my questions, do I need to sand off the paint off the place where I want to spot weld it? if so, i just smple 'spot' it or i need to punch a hole then weld those metals? where should I start from? any advice is welcome.

 

Bump!
I remember i have seen something like a clamp, clamp the 2 pieces together then it punch it automatically, for the rear/trunk/underside of suspension towers, then i have no idea..

 

What exactly are you welding on? snap a pic of the car and the subframe and i can tell you step by step, or hit me up on AIM @xyswany

 

How much more hp will this get you?

ZERO

You're wasting your time and will wind up just making your car look like ghetto rigged ****.


but, I'll answer your question anyway... YES, you need to remove paint. You then need to paint it also. I don't think you want to or can disassemble your car, grind off paint, repaint and reassemble in 2-3 days.

No offense, but something's telling me that you are a bit confused on what a spot weld is, and maybe don't even have a spot welder.

 

I have a spot welder, just doesnt look exactly same as the one I prev use.

-I have 2 months in total to work on my car, I got 2 cars so it isnt any problem putting one to work on.

-My car is gutted, I need to remove the sound deadning anyway ( that dry ice trick didnt work for me, so I have to use a heat gun. that will require my gas tank and a lot of stuff removed)

-The wires are old and somewhat loose to everywhere, I want to re-wire all those **** so she'll look cleaner.

I just removed my roll cage, just because I want to do it right at a time, remove everything. and to avoid anither super time consuming stuff that might add up, i figular out doing spot weld is the best thing to do now.labour cost can be super expensive.

 

So you're aware that a spot welder does NOT have any arc, and you do not need a welding hood to do it?

Fact is that you will find it impossible to put good spot welds in many areas, because you don't have the ability to clamp the pieces between two electrodes or have the high power they do at the factory.

either way, if you wanna do it, go for it. However, my advice is that unless your car will be putting out 600hp or more, it's wasted time.