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www.QV500.com - Ferrari 328 Part 2: GTB & GTS Turbo |
 GTS & GTB Turbo's |
As they had done with the 308 GT4, GTB and GTS, Ferrari produced a special home market 328 that could negate the tax penalties imposed on vehicles with a displacement of more than two-litres. Designated GTB and GTS Turbo's, the most fundamental changes were unsurprisingly focused around a new engine. Displacement was 1991cc thanks to a bore and stroke of 66.8mm x 71mm, output peaking with an impressive 254bhp at 6500rpm. Whereas 208 Turbo's had used KKK turbochargers, these new 328-based cars used an IHI unit running at 1.05 bar of boost. |
| Earlier 208 Turbo's had used just 0.6 bar, this drastic rise in boost pressure being facilitated thanks to the use of new ceramic-coated cylinder liners and a Behr intercooler. Compression of the Tipo F106 N engines was set at 6.5:1 while Bosch K-Jetronic fuel injection was again used. Performance was extremely impressive with a top speed of 157mph and zero to sixty taking less than six seconds. The only visual differences between these two-litre Turbo's and regular 328's were their NACA ducts positioned just in front of each rear wheelarch, redesigned engine covers (in order to accommodate that Behr intercooler) and a ventilated rear bumper. Inside, other than Turbo scripting on the dash and a boost guage on the main console, the tax break models were also unchanged. Introduced in early 1986, the GTB and GTS Turbo's were produced alongside the three-litre, normally aspirated 328's until their demise in late 1989. However, the two-litre Turbocharged versions remained in production for a little longer, 308 GTB's and 828 GTS's eventually being completed. |
 GTB Turbo |