Heating the part will cause it to lose its spring temper, resulting in great loss of strength and very little spring back. These parts are heat treated for spring toughness, similar to suspension springs. If you will attempt to straighten or reform the main spring brackets, do NOT heat them with a torch. Also if someone had once towed the car by pulling on the cross tube, the tube could be bent forward in the middle which can leave the outer end flanges dislocated slightly rearward. The outer end of this lateral tube sometimes gets pushed backward a bit with a frontal impact near the end of the bumper. When the bracket is straight it can serve as a check template to assure that the tube flange it attaches to is also in the correct position. If this bracket is kinked the outer end of the bumper may sit too close to the body. In particular, the side plate of this bracket needs to be completely flat except for the small tab for the rear bolt. The small frame side brackets extending forward to hold the outer bumper mounting studs also need to be straight.
This should be symmetrical left to right, which can be verified by measuring diagonally. Condition of the front frame extension also bears checking. If you have a straight bumper, but it doesn't line up right relative to the body nose, then the main spring brackets may have the wrong shape. It is common that the front bumper and/or mounting brackets may have been bent by some prior impact.
#Bumper facebar vs support install
If you install a fog lamp bracket the bumper may need to be a tad lower to allow the lamp bracket top securing bolt to pass under the body nose. For best protection you want the bumper to be spaced farther forward from the body, but not so far out as to make the bolts securing the front valance panel obviously visible from the top. If you leave the overriders off you are much more likely to incur damage to the face bar or body nose and grille.įor best appearance you want the bumper to be straight and level, close up under the body nose but not touching the body. This is not by intention, but just works out that way in the environment of mismatched bumpers. The top of the overrider will then put a small crescent shaped impression in the sheet metal, but with luck no other damage, and it may not be to hard to repair. This can twist the spring mount (not so much the face bar) allowing the top edge of the overrider to come into contact with the painted part of the body nose. a larger car), such an impact will often occur at the top end of the overrider. In the case that there is a mismatch in bumper height (vs. This is best served if the bumper is mounted a little way away from the body so it doesn't chip the paint when it wiggles. End result is that a gentle nudge will wiggle the bumper but do no structural damage. An intentional gentle nudge by another car is intended to be taken on the overrider, with little or no touch on the face bar, in which case the face bar serves to stiffen and stabilize the overriders to keep them from twisting. This works especially well if the impact or push is directly on the overrider rather than on the face bar. like a very careful "park by ear", or a gentle push start by another car, the brackets can flex rather than bending the bumper face bar. If it encounters a mild and very low speed impact. These brackets allow the bumper mount to flex a bit.
The bumper is mounted on flat spring steel brackets with dogleg bends. Shape and alignment of the bumper is important, but the mounting brackets my not always want to cooperate. It is tucked in close to the body and just below the front edge of the body face cowling. Installing the MGA front bumper is more of a challenge than the rear one. Mounting the Front Bumper, MGA The MGA With An Attitude
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