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Ford 8.8 axle tube welding vs pinning

Old 03-10-2019, 02:47 PM
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Default Ford 8.8 axle tube welding vs pinning

I've done some searching and there's a lot of write ups and videos on welding axle tubes but the info on axle pinning is scarce. I know most guys are just going to say weld it and get on w it but pinning seems like a good idea because I'm worried about warping the tubes. I don't really feel like building a jig just to hold my tubes either. Anyone ever pinned their tubes? And if the consenus is just to weld them, should I do it on the Jeep to prevent warping or off the Jeep.
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Old 03-10-2019, 03:32 PM
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Pinning would be better then nothing...but be very careful of drill shavings getting in the axle tube where it can get to the wheel bearings and or back into the hogshead later on.
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Old 03-14-2019, 03:58 PM
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Don't know for certain about the 8.8, but most axles are already plug welded to fix them together. The advantage of welding the seams is a massive increase in surface area for the weld.

I doubt you'd be using a pin that has a greater cross section than that of the plug weld, and as such they would be weaker. Assuming you don't have access to high tolerance machining equipment your holes would not be perfectly round to mate your pins, and then there would be some minuscule room for deflection and that portion of the tube that was drilled for the pin will become significantly weaker.

Just my two cents, not sure if that is very accurate of the reality of the situation, but something to consider.
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