P38A Calibration blocks

romanrob said:

As you say, LR set up brand new P38s within 2 bits of one another - very possibly - but the sensors and cars were brand new. I bet you if we do a survey of front height settings now on 20 yo sensors most people will have a difference of more than 2 bits on the front axle.

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Datatek said:

You did not answer the OP's question, you actually just suggested using calibration blocks as an attempt to overcome what is obviously a fault. The car leans but recovers when driven, that could be a duff sensor, corroded connections to the sensor or a leaking airspring. Sitting it on calibration blocks will achieve nothing because the car recovers to level when driven so how would the calibration be a problem?

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romanrob said:

So it turns out the "2 bit" reference in LR systems documentation is actually the threshold that each corner uses for self leveling ie when actual value is more than 2 bits from target on an individual sensor, so not the threshold difference with the actual reading at the other end of the axle. This makes more sense, and allows for the separate calibration of each corner, and allows the foibles of each sensor/ chassis mounting to be zeroed

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