its a pretty simple mod, have done on my split and Jane's bus.
have cut the hatches out to the stiffening rib which is visible in the engine bay. Drill corner markers from underrneath or measure very carefully. Use a jig saw with a metal cutting blade to get a thin cut, but best to cut the transverse rib from underneath with the angle grinder. Made support frame from 1 inch square tube and tacked to each of the ribs. The cut out panel simply rests in the hole, no hinges or catches as I didnt want pieces stcking up in the floor, Ifind the sealing strip and sound proofing I used in the split stops any rattles (plus the spare tyre sat on top). These are bay pictures which is still in primer. Oh, and its a good idea to cover your engine with something before cutting, and whilst welding.
shows the cutout back in place, this will be finished with sound proofing but haven't finished paint yet.
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the underneath of the hatch, the small notches line up with the tacks on the frame.
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easy engine access, this is how I found out my supplier hadnt fitted the distributer vacuum hose to the carb which is an impossible to get at tapping facing the fuel tank, The panel carrying the multi pin connecter was removed by drilling out the spots and then remounting when the new frame is in place.
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A rear corner, I had cut the hatch sufficiently far back for the rear support to be clear of the ridges in the panel.
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A front corner, the transverse support is dropped to sit under the ridges
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View from inside the engine bay shows the yellow VW rib and the red square tube I used, and where the middle transverse rib has to be cut.
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