4channel to 3channel conversion 12bolt question
12-03-2007, 06:09 PM
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4channel to 3channel conversion 12bolt question I got a question for you guys: Can you take a 3 channel rear and install it in a 4channel car, by just pressing the reluctor wheels on the axels? I am going from a 10 bolt to a 12 bolt and I can use my old axels. However, if I can just press the reluctors on, where can I purchase some?
I read the FAQ and found these:
15. What's the difference between a 3 channel and 4 channel rear?
A three channel rear end has ABS. A 4 channel rear end has ABS and traction control. A 'channel' is just a way of describing the means for a speed sensor to gauge the wheel speed. On a 3 channel rear end, the two front wheels have sensors, and there is one sensor on top of the rear end housing that reads for the whole rear. On a 4 channel rear end, there is a speed sensor at every wheel. 4 channel rear ends have reluctor wheels on each axle, 3 channel rears have one big reluctor ring on the differential. Because a 4 channel has a sensor at each rear wheel it can see the difference in speed between one wheel and the other, and ta-da, you have traction control.
16. Will a 3 channel rear end work in my 4 channel car?
Yes, you can make it work, if you put the axles from your four channel car into the 3 channel rear end and install the sensors into the backing plate. To put a 4 series into a 3 series would be more difficult, because it would require you to drill in the top of the rear housing for the sensor, and add a reluctor ring to the carrier as well.
17. Can't I just edit ASR/ABS out of the PCM with tuning software?
The answer is no, because the PCM does not control these functions. They are regulated by the EBCM (electronic brake control module) which is attached to the ABS pump. So if you attempt to swap the wrong rear into your car and don't hook it up right, the dash lights will illuminate...unless you pull the bulbs, or put electrical tape over the lights. The EBCM will kill the dash lights when everything passes.
Thanks
I read the FAQ and found these:
15. What's the difference between a 3 channel and 4 channel rear?
A three channel rear end has ABS. A 4 channel rear end has ABS and traction control. A 'channel' is just a way of describing the means for a speed sensor to gauge the wheel speed. On a 3 channel rear end, the two front wheels have sensors, and there is one sensor on top of the rear end housing that reads for the whole rear. On a 4 channel rear end, there is a speed sensor at every wheel. 4 channel rear ends have reluctor wheels on each axle, 3 channel rears have one big reluctor ring on the differential. Because a 4 channel has a sensor at each rear wheel it can see the difference in speed between one wheel and the other, and ta-da, you have traction control.
16. Will a 3 channel rear end work in my 4 channel car?
Yes, you can make it work, if you put the axles from your four channel car into the 3 channel rear end and install the sensors into the backing plate. To put a 4 series into a 3 series would be more difficult, because it would require you to drill in the top of the rear housing for the sensor, and add a reluctor ring to the carrier as well.
17. Can't I just edit ASR/ABS out of the PCM with tuning software?
The answer is no, because the PCM does not control these functions. They are regulated by the EBCM (electronic brake control module) which is attached to the ABS pump. So if you attempt to swap the wrong rear into your car and don't hook it up right, the dash lights will illuminate...unless you pull the bulbs, or put electrical tape over the lights. The EBCM will kill the dash lights when everything passes.
Thanks
