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Car Forum / Jeep / March 200795 Yj threaded hole sizes
The threaded holes in my 95 Yj frame are quite rusted so it is hard to tell if the bolt is wrong or if the rust is causing them to go in tight. The rear ones (under frame behind shackles) I have been told are 10mm. Is this right? The front ones (top of frame, used to mount tow hooks) seem to be 1/2 coarse thread but the previous owner installed a bumper with what seems to be 12mm 1.75 thread bolt. The threads looked damaged when I took them out. Anyone know the correct size? Thanks AFIK, none of the frame bolts on a YJ are metric, all SAE.. Front tow hooks should be 1/2" SAE coarse, rear should be 3/8 SAE coarse. > The threaded holes in my 95 Yj frame are quite rusted so it is hard to > tell if the bolt is wrong or if the rust is causing them to go in [quoted text clipped - 9 lines] > > Thanks > AFIK, none of the frame bolts on a YJ are metric, all SAE.. Front tow > hooks should be 1/2" SAE coarse, rear should be 3/8 SAE coarse. [quoted text clipped - 14 lines] > > - Show quoted text - By looking at some installation instructions on .pdf files for rear bumpers and hitches from two different manufacturers, it is actually 7/16 in the rear. 1/2 in the front seems to be correct. Thanks for the input. My rear bolt holes have been drilled out to accept 6" long x1/2" through bolts to hold the bumper and the rear tow hooks. It was the only way to get enough strngth to feel comfortable with rear tow hooks. >>AFIK, none of the frame bolts on a YJ are metric, all SAE.. Front tow >>hooks should be 1/2" SAE coarse, rear should be 3/8 SAE coarse. [quoted text clipped - 20 lines] > > Thanks for the input. > My rear bolt holes have been drilled out to accept 6" long x1/2" through > bolts to hold the bumper and the rear tow hooks. It was the only way to [quoted text clipped - 26 lines] > > - Show quoted text - I like that idea, the YJ isn't designed very well for rear tow points. Did you have to lift the body to do it? I have a 2" body lift, if I did it over I'd stick with a 1" lift. You can get special bumper mounts and nut in under a 1" lift, you need a bit more to get the hook mount that I have. My bumper is mounted with 1/4" x 2" straps on top and bottom of the frame with the bolt compressing those onto the frame. If you move the hook back a bit, it fits in better. My bumpers are custom 2"x5" rock crawler style with intergal winch mount in front and 2" reciever in the back, both ends are set up as air tanks. >>My rear bolt holes have been drilled out to accept 6" long x1/2" through >>bolts to hold the bumper and the rear tow hooks. It was the only way to [quoted text clipped - 29 lines] > I like that idea, the YJ isn't designed very well for rear tow > points. Did you have to lift the body to do it? > I have a 2" body lift, if I did it over I'd stick with a 1" lift. You > can get special bumper mounts and nut in under a 1" lift, you need a bit [quoted text clipped - 40 lines] > > - Show quoted text - Nice setup, I like the air tank idea too. Small body lifts can be put to good use. |
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