Odgovori uz citatWelcome to the ultimate Calibra site.
The Calibra with a 3.2 liter V6 supercharger, a 6-speed gearbox,
18 inch alloys, Porsche brakes and more than 360 bhp.
The 2.5 liter V6 however produced a modest 170 bhp and 226 Nm of torque. Thanks to its aerodynamics it was still able to hit around 230 km/h. Although the car weighs around 1.335 kg it accelerates from 0 - 100 km/h in under eight seconds. But I soon realised my V6 was under powered to my taste. I loved the car for its smooth ride and low noise levels, but it was not a sports car in the true sense of the word. It's more a GT type of car. But of course ……. things could be improved.
Although I could have gone for the fast 2.0 liter 16V turbo, I was concerned about its reliability. The turbo charger and the four wheel drive system are not the most reliable components in the world. It was time to make my way to Mantzel in Oberhausen, Germany.
The V6 suffers from various "problems". It has an awkward gear-box, a very heavy fly wheel and an inherent breathing problem. Installing a reprogrammed chip would have no effect whatsoever.
Mantzel increased the size of the inlet manifold by 25 mm, reworked thebody, installed sharper camshafts and a Group A exhaust system. He also flowed both cylinder heads and only then reprogrammed the chip with the car on the Dyno.
The engine produced 240 bhp and 260 Nm of torque, but the power would only come in at 4.500 rpm and the long gear ratios made it difficult to drive fast. Mantzel believed the 3.0 liter short-block from the Omega MV6 would fit underneath the 2.5 liter heads. After installation this resulted in an impressive 280 bhp and 320 Nm of torque at only 3.500 rpm.
Interestingly enough, Irmscher recently did the same thing to their anniversary Vectra stationwagon, although with a lot less power. I wonder where they got the idea??!
However, I still needed to shift down to second! gear when accelerating from 80 km/h onwards and when coming out off a tight corner it left me with no power in second gear at all.
Mantzel altered and installed the 6-speed gearbox and clutch from the Calibra turbo and advised to reduce the weight of the flywheel by 6 kg!! at the same time. The response and pick-up are so fantastic that it feels like the car gained a lot of extra horsepower.
The car is unbelievably fast and is able to top 270 km/h, but the day will come when my brakes can't withstand the beating. So it is better to upgrade the front brakes and not take any chances. I browsed the Internet and came across a German company (Mov´it) that supplies modified brakes of the Porsche 993 biturbo. Now, I can assure you that brakes don't come any better than that. The kit consists of 32,2 cm discs, two calipers with four pistons each, Porsche brake pads, kevlar coated brake lines and all mounting material. It took my local dealer only 2.5 hours to install the set and it was a perfect fit, provided you have at least 17 inch alloys.
The brakes look like a million bucks (see picture), but the braking power is unmatched. If I brake from 180 km/h to a standstill, then with the old brakes I would still be doing around 80 km/h!! 200 km/h to a full standstill takes only 5.6 seconds! Need I say more? I am just really happy with these brakes. It takes braking to a new dimension.
Mov'it have now released a brake kit for the rear axle of Calibra V6 and turbo. The rotors and calipers are taken from the Porsche 996. They are drilled and vented. It took more time to fit this kit, because it
required minor modifications to the handbrake. After carefully braking them in for 250 miles I finally got to test them. They are as excellent as the front brakes and I was pleased to realise that even though only 30% of the braking power goes to the rear, the car is still in balance when braking hard.
The entire system feels even more solid now.
picture:http://home.planet.nl/~denke000/Calibra6.html
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