Making and installing the front bumper outer brackets
I fabricated inner brackets and installed them on the 4R already. Their purpose is to beef up the flimsy bumper brackets that Toyota provides on the stock vehicles. I'm doing the brackets out of 1/4" plate and the winch mounting plate will also be 1/4" plate. After I finish the winch plate I will build the actual bumper from 3/16" plate.
Doing the outer brackets were time consuming because I had to figure a way to make a three point attachment for adequate strength. I drilled out the top nut, which is welded to the inside of the frame. I made the hole 1/2" to accept 1/2" bolts. I am using the lower hole and nut (which is already welded to the frame) also. The lower bolt is a M12 so it didn't need drilled out and enlarged. For the third bolt I was going to use the hole in the frame to the rear of the body mount, but it was way too large for a 1/2" bolt. I opted to shorten my bracket and drill a new hole the proper size.
Then I aligned the two bracket pieces while on the vehicle and held them in place with magnets so I could tack weld them. After they were tacked, I simply took them to my work bench and finished welding the brackets. They came out a perfect fit! After I got the bolts through the holes, I simply untwisted the tie wire and pulled it off the bolts and out of the frame.
20161220_121912 by
sunpilot1, on Flickr
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sunpilot1, on Flickr
Here are a few photos of the brackets I made...my welding is getting better, but still not pretty. I cut a few pieces apart to see how strong they were, and I am satisfied the welds are adequate, but as I said...not pretty!
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sunpilot1, on Flickr
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sunpilot1, on Flickr
Here are the brackets installed...
20161222_121913 by
sunpilot1, on Flickr
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sunpilot1, on Flickr
The dilemma then became, how do I get the bolt through the hole from inside the frame.
You can see the rear bolt behind the body mounts. This is my solution for getting those bolts through the frame. Using the brackets as a template, I drilled the holes. Then I used some construction tie wire twisted around the bolts as a way to fish them through the frame.
20161220_105640 by
sunpilot1, on Flickr
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sunpilot1, on Flickr
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sunpilot1, on Flickr
I made sure the wire was long enough to reach the holes. I couldn't see inside the frame, so I needed some way to shine a light in there to help me fish the bolts through...I came up with this idea:
20161220_121859 by
sunpilot1, on Flickr
I used an interior light bulb and wired it to the battery, then slid the bulb in the lower hole in the front of the frame...it lit up the whole inside of the frame allowing me to see what I was doing.
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sunpilot1, on Flickr
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With light to see by, the bolts were easily fished through the frame and out their holes. It took only a half minute to get the bolts in once I figured out how to do it! After the bolts were through the frame, I simply untwisted the tie-wire and pulled it off the bolts and out of the frame.
20161220_110232 by
sunpilot1, on Flickr
I also had to put spacers between the brackets and the frame in two places because the frame is thicker in one spot, so I cut spacers from 1/8th steel that was lying around. It was thicker than using washers, just right!
20161220_121909 by
sunpilot1, on Flickr