Cutting "THE HOLE"
The Birkin does not come with a hole cut in the body for the extractors. Once you decide on your engine package, this then dictates which side and where the hole must be cut to accommodate the extractors. As I am going for a Duratec motor, the hole is on the right hand side. Brenton from Meridian Motorsports kindly provided a cardboard template for the required hole.
I had read a lot of horror stories about cutting this particular hole, and I was more than a little concerned about undertaking cutting a hole in my new baby. Three days of false starts, and I settled on a 1mm Flexovit metal cutting wheel for the grinder. I cut a test line in the middle of the hole, and once I realised how easy it was, I roughed out the entire hole in about 5 minutes. That was the easy part!. I then tackled the remainder of the hole with a file to bring the cut back to the marked up line, and I then finished it up with a grinding/polishing wheel in the Dremel (which took 2 more nights to finish!). All in all not a bad result for something I was petrified of attempting.
The Birkin does not come with a hole cut in the body for the extractors. Once you decide on your engine package, this then dictates which side and where the hole must be cut to accommodate the extractors. As I am going for a Duratec motor, the hole is on the right hand side. Brenton from Meridian Motorsports kindly provided a cardboard template for the required hole.
I had read a lot of horror stories about cutting this particular hole, and I was more than a little concerned about undertaking cutting a hole in my new baby. Three days of false starts, and I settled on a 1mm Flexovit metal cutting wheel for the grinder. I cut a test line in the middle of the hole, and once I realised how easy it was, I roughed out the entire hole in about 5 minutes. That was the easy part!. I then tackled the remainder of the hole with a file to bring the cut back to the marked up line, and I then finished it up with a grinding/polishing wheel in the Dremel (which took 2 more nights to finish!). All in all not a bad result for something I was petrified of attempting.
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