S13 Odomoter Rollback (For Track Cars Only!)
Jun 3, 2008 Archived News, Miscellaneous, Tech (CA18DET 240SX, S13), Tech(S2000)
DISCLAIMER: THIS GUIDE IS FOR TRACK CARS ONLY. Rolling back the odometer on a street car is ILLEGAL. Not to mention unscrupulous if you do it with deceitful intent. I suggest you look at it this way, if your car is registered with your state and driven on public roads, you cannot do this. On the other hand, if you own a dedicated track car that is trailered when on public roads and not required to register then by all means proceed as you wish.
With that said, this is something I find immensely useful on a swapped chassis. Setting the odometer to zero when installing a new ca18det or sr20det makes it super easy to keep track of the overall miles you have put on the car.
Considerations
There are just a couple of notes I want to mention. First of all, pay careful attention to the way the odometer fits together before you disassemble it. This will make it very easy to reassemble if you somehow get things out of order. Also, the small white tumbler gears need to be aligned with the numbered gears when reinstalling. Once reinstalled, spin the blue gear on the side and verify that there is no binding. Furthermore, rolling the odometer back one to 999999 and then forward to 000000 will snap the gears in place and will help with the alignment.
Finally, click on any picks for a larger view.
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- Remove the trim from the steering column and the cluster.
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- Disconnect the gauge cluster at the three highlighted points.
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- Disconnect the electrical harness from the cluster.
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- The gauge cluster removed from the dash.
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- Remove the clear plastic cover and then the plastic gauge frame by depressing the tabs around the housing.
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- Gauge cluster with the clear cover removed.
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- Cluster with frame removed.
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- Remove the four highlighted screws and pull the speedometer out of the cluster.
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- The speedometer pulls out of the cluster exposing the odometers.
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- Remove these two screws and the electrical connection to remove the odometer from the housing.
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- The odometer removed from the cluster.
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- Remove the two screws that hold the two side of the odometer together.
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- Take the mileage odometer in hand and pry the metal tab up slightly with a small flat head.
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- Slide the numbered gears out of the housing and off of the tumblers.
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- Rotate the numbers to 0.
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- Slide the numbered gears back into place, rotating the tumblers so that they sit securely in the grooves.
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- Once inserted, bend the tab back down and then place the odometer behind the window to verify its alignment.
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- Reinstall everything in the reverse order.
