Have you noticed how exposed your radiator is behind the front bumper air scoop? All it takes is a piece of gravel or debris to be thrown up by something in front and a bit of bad luck and you will have a punctured radiator. If you fitted an expensive Front Mounted Intercooler, it is even more a risk. I decided to see what I could do about this.
Things you will need in advance are a piece of mesh large enough to fit the scoop (the S14a scoop is bigger than the S14), some 100mm strips of metal wire, and bonding compound. The mesh I initially used was aluminium. I would strongly advise against this as it deteriorates and forms white rust. The mesh I now have is stainless steel 'MG type' diamond pattern, which I bought from my local Halfords. You will also need a cutting knife (or thin hacksaw blade), some wire cutters and a 10mm socket.
Undo the engine undertray before starting as this give much better access to the air scoop.
On an S14 you will need to remove the cross-members in the scoop. Use a cutting knife or hacksaw blade, and cut carefully. It is far too easy to slip and scrape the bumper.
With the cross-members removed (Figure 3) you can touch up the plastic that you cut away if you wish. On a darker coloured bumper it isn't that noticeable. Take this opportunity to thoroughly T-cut the scoop.
Cut out a piece of mesh bigger than the scoop and try it for size by feeding it in from underneath. The mesh will probably need several trimmings before its the right size.
I initially bonded the mesh to the bumper. This is a very fiddly process and is a right pain if you want to change the mesh later (which I did!). What I did second time around was use strips of wire which I stuck to the hidden inside edge of the scoop using bonding compound. This allowed the mesh to be added and removed easily by simply twisting the wire when in place.
I had plenty of mesh left to replace the stuff in my Navan grille too.
Judging by the amount of debris I now collect in the scoop each week, I know I made the right decision to fit the mesh. It also makes the front look more aggressive.