sean sherry
Master
An interesting old post from Styria on inaccurate speedos. My 280 SL is 11% slow on the odometer. I have fitted a higher ratio Diff but the speedo was also too slow with the original diff. Now I know that diff Ratios and speedo heads are matched. The speed reading was easy to alter , just move the Needle to start from about 15 MPH. A quick twist removes most needles. Finding a second hand speedo head for a 280 107 is well neigh impossible but one to match the higher ratio diff a lost cause. I have found a device that interrupts the pulse from the gearbox and claims that the signal can be increased or reduced.
How it increases the pulse speed I don't understand.
Has anyone experience with such a device sourced from "J Car " .I don't want to proceed with fingers crossed.
How it increases the pulse speed I don't understand.
Has anyone experience with such a device sourced from "J Car " .I don't want to proceed with fingers crossed.