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Beitrag: [QUOTE="Lomax, post: 578466, member: 8637"] Hello Toni [i]I have been planned to buy new transferbox for my Vectra.I thought Hürlimanns sport transferbox would be quite nice for my use. Can you tell me how much power this box can handle or is it made for normal (204 hp) power only? I read the sportbox´s guarantee is valid till 300 hp, is it true?? [/i] From my own experience in know that the Sportbox can easily take the power of a phase 2 fitted car, though i must admit, that i rarely torture my car with dragstarts. The important thing is to adjust the camber and toe if the car is lowered. Also, the oil of the transferbox should be replaced periodically (annually) . The problem is dragstarts; the construction of the t-box was originally designed for delivering approx. 100 nm of torque to the rear axle. The sport box has the capability to deliver far more, however, there will be no situation where you will have more torque on the rear that on the front. Also, the sportsbox is not designed for racing use (quartermiles, red-light starts at revs above 5000 etc.). If your driving style is very hard, you could be better off with a Racing-T-Box. [i]Is the sportbox more durable than the original transferbox? The original transferbox seems to be quite rubbish.My own box went down at the point of 100000 km`s.Is it normal??And I have heard other horror stories about Opels own transferbox…and could you tell me why they are so weak?[/i] The original design of opels t-box has a small construction problem which will cause the pressure-piston sealing in the box to leak after a certain time. This often happens after approx. 100000km and is easy to detect : the t-box gets filled with powersteering oil and finally the oil flows out of the breather pipe which leads from the T-box to the area of the coolant reservoir. The problem: if you replace the broken parts (even with new ones) it is likely, that after a certain time (or 100000km) the same defect will occur again. Huerlimann has changed the design and construction of the respective parts. [i]Is it good for sportbox if I switch off the safety system of Opel? I mean that system: when you press brakepedal, 4x4 will be switched off over 25 Km/h speed. I have been thought if I switch off that system would the sportbox will last longer??And what about the driving pleasure and safety points in winter? [/i] There is NO POINT to switch off the system at any time as the car does that himself. The box will not last longer. You could even have the effect of shortening the cycle time of your box as it is very important to have no differences in tyre wear from front to back. If you switch off the 4x4 for a longer period, you front tyres will wear quicker and you therefore have problems when switching on again. The driving behaviour of a car with SVG is far more neutral than with the original t-box (depending on the setup/ratio of the viscous coupling, mine is set to 220nm). [i]What is the normal temperature of the transferbox?When I drive about 120 km/h the temperature is about 120 celsius or even more.Is it normal...? [/i] Your box only warms up when the viscous coupling must egalize a difference between front and rear axle (Normally just for short time; e.g. on loose grounds, when cornering etc.). If you constantly have a difference between your axles caused by uneven tyre wear or false camber and toe adjustment, your box will get hot after a certain time (the more difference, the quicker) At a temperature of approx. 140 celsius the a safety-system (models after 93) should switch off the 4x4 and your warning light should light up as the viscous coupling comes into the ‘hump’; this means it is blocked. Best regards Lomax [/QUOTE]

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