Whiteline, cusco and R180 diff
25 August 2012, 08:07 PM
#1
Whiteline, cusco and R180 diff
3" catback exhaust will fit classic £150, not overly loud but sounds lovely on full chat
R180 4.444 suretrac diff covered 30k £200
R180 4.444 suretrac diff covered 30k £200
Last edited by banny sti; 28 August 2012 at 11:32 AM. Reason: Rotated kit sold
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02 September 2012, 09:36 PM
#23
Neither its a suretrac diff
The New Impreza WRX STi also comes equipped with front & rear "Suretrac" limited slip differentials. These LSDs respond to a torque differential between left and right wheels transferring the torque from the slip wheel to the non-slip wheel. The benefit is that they only activate under drive and do not respond to differences in left & right wheel cornering speed when coasting. This means that at the limit of adhesion torque is transferred from the inside wheel that is losing traction as a result of weight transfer to the outside that has traction. The effect is to noticeably reduce understeer under hard cornering under engine power. The 'Suretrac' LSD function, differs from a conventional differential in that it does not have pinion gears and side gears. In their place are two opposing face cams and nineteen cam followers. The face cams are formed with a series of inclined ramps resembling sharp teeth. One face cam has nine 'teeth' the other has ten 'teeth'. The cam followers have special asymmetrically shaped profiles to match the face cams, and they are splined to the differential case. This means that drive through the differential is via the cam followers to the face cams, and then to the axles. When moving in a straight line, there is no relative speed difference between the face cams, which are splined to the front axles. When cornering with no load, each of the face cams is free to rotate independently from the other. Under this condition, the cam followers oscillate freely from left to right. When torque is applied, the cam followers are forced against the face cams, transmitting driving force to the wheels. If a wheel begins to slip, the relative movement between the two face cams, combined with the angular forces of the cam teeth causes torque to be transmitted to the slower turning wheel. The Suretrac differential is lubricated by normal gear oil, with flutes on the side of the differential case used to direct oil into the cam followers and plates.
The New Impreza WRX STi also comes equipped with front & rear "Suretrac" limited slip differentials. These LSDs respond to a torque differential between left and right wheels transferring the torque from the slip wheel to the non-slip wheel. The benefit is that they only activate under drive and do not respond to differences in left & right wheel cornering speed when coasting. This means that at the limit of adhesion torque is transferred from the inside wheel that is losing traction as a result of weight transfer to the outside that has traction. The effect is to noticeably reduce understeer under hard cornering under engine power. The 'Suretrac' LSD function, differs from a conventional differential in that it does not have pinion gears and side gears. In their place are two opposing face cams and nineteen cam followers. The face cams are formed with a series of inclined ramps resembling sharp teeth. One face cam has nine 'teeth' the other has ten 'teeth'. The cam followers have special asymmetrically shaped profiles to match the face cams, and they are splined to the differential case. This means that drive through the differential is via the cam followers to the face cams, and then to the axles. When moving in a straight line, there is no relative speed difference between the face cams, which are splined to the front axles. When cornering with no load, each of the face cams is free to rotate independently from the other. Under this condition, the cam followers oscillate freely from left to right. When torque is applied, the cam followers are forced against the face cams, transmitting driving force to the wheels. If a wheel begins to slip, the relative movement between the two face cams, combined with the angular forces of the cam teeth causes torque to be transmitted to the slower turning wheel. The Suretrac differential is lubricated by normal gear oil, with flutes on the side of the differential case used to direct oil into the cam followers and plates.
