Join Date: Dec 2007
Location: Holmfirth (west Yorks)
Re: How to fit 'high' rear spoiler to a 156
Take your time. Thats all i can say, i spent a good day on mine triple checking every measurement.
You'll need to measure the distance between the holes on one side of the wing to the corresponding hole on the other side. (Measure from the centre of the hole.) Write this down on a simple diagram. Then double check everything.
Then draw around the base of each leg of the spoiler onto some card to make two templates. Mark the holes on these templates EXACTLY where they are on the spoiler. Again mark the centre.
Mask each side of the bootlid/rear panel and lay the templates on the tape. Make sure the templates do not get mixed up! otherwise you've had it. Left stays left, right stays right.
Tape the templates down when they are the right distance apart (refer to your earlier notes here) and look straight. Plonk the spoiler on top and see how it sits. You can adjust from here and move your templates if required.
Right, once you are 1000000% sure everything is the right distance apart and straight, check the underside of the lid, you don't wanna be drilling though a crease in the metal, nor do you want to be so far on the edge that a bolt will foul and stop you shutting it.
MAKE xbillion times sure everything is bob on. Then drill the lid. Start with small bits and work up. Test fit the wing occasionally to make sure all holes are lining up.
When everything is drilled and correct, remove the masking tape and put a blob of paint or hammerite etc on the exposed metal around the circumference of the drilled hole.
Test fit the wing properly. Screw it down tight and pray you've not f**ked up! (Use flat or small headed allen bolts from the underside and a washer or two, again on the underside. You will have to probably blatt the sides off the washers so they are flat and don't protrude out of the lid.)
Assuming all is sweet take the wing off again, put a line of sikoflex or mastik along the base of the wings feet, put it back on the lid and screw it down for the final time.
I cannot emphasise how well you must check your measurements, and continue to check throughout the process.
As for your boot struts they'll be fine. Mine are, the boot still pops when i release it on the pull or off the fob no problem.
One major word of warning it keep hold of your boot when opening! If you fling it open you will smash the rear screen. If you're scared of this happening, looks at the hinges. You'll be able to see you can fashion your own stops out of some nuts and a pair of bolts, limiting the opening limit of the boot.
Also do not drop it from a great height, lower the lid and let it go 3 or four inches from closed.