More GTO look, EFI, AMG supercharger, Supertrapps and Magnaflows by bert308

4 minute(s) of a 114 minute read

I couldn't resist and bought the Porsche brakes. Of course I immediatly had to test fit them, made a temporary adapter from an angle iron, made alu "fakediscs" for taking sizes. First made a 330 mm disc. I thought that would fit but seemed a little too much, so i went for 310 mm. Later I found out I couldn't really fit bigger discs because of the enormous width of the calipers, with a smaller disc the caliper moves inside were the wheel has more room.

The above pictures were with the 330 mm disc. After I cut the disc to 310, that looked better, the caliper will sit closer to the original mount which is good for strength and the 310 discs will be more than enough. I have smaller wheels than the Porsche 996 turbo so the rotational speed of the disc through the caliper will be about the same, well, it would be if I could get my car to 300 km/h. After careful measuring I was ready to order discs and adapter. The Porsche has 330x34 and 330x28 discs, I ordered 310x35 and 310x32 from wilwood through summitracing. The hats I'm ordering in the UK, they are universal with a 50 mm center hole and undrilled pattern, available in 10 mm steps 0 to 50 mm offset, I will have the 30 mm offset were I need a 5 mm spacer between disc and hub in front and the 13 mm face width needs to be machined 5 mm down for the rear. Also the center hole needs to be enlarged to 58 and 67 mm and the bolt pattern drilled, a guy at my job will do that for me. I found this document very helpful: http://www.rallydesign.co.uk/pdf/des...pot_brakes.pdf

Then I was thinking about the handbrake. I have some worn Alfasud front calipers with build in handbrake (yes) they are the same ATE as the Ferrari rear only handbrake lever different position. I split them but I soon saw it wasn't going to work, to heavy, not a supple mechanism. Then I remembered my Lancia Montecarlo has nice aluminium lightweight sliding calipers with a good handbrake (for discs). If you remove all the sliding stuff a nice solid and light piece remains. These are Fiat calipers as used in sporting versions of the 124 and larger saloons, very rare today. But when I did a search for Fiat calipers I found similar ones are still used today and I bought a used pair from a Coupe Fiat Turbo, they look like alu but not sure. I have some ideas on how to adapt them but I have to have them in my hands first. I did drill and tap the front side mounting ears on the rear uprights and decided I am going to put the main brakes in front of the wheel and the handbrake behind.