Dial Indicator Extension and Spark Plug Mount - ROK VLR 100

thingiverse

I created this to allow me to measure Top Dead Center as well as the timing of my Vortex ROK VLR engine. I used this with a 0 - 10mm, 0.01mm accuracy, Accusize dial indicator. https://www.amazon.ca/dp/B075XT3Q6W/ref=cm_sw_em_r_mt_dp_SA5C6Q4A5J1J51RZJW7H?_encoding=UTF8&psc=1 The dial indicator into the plug hole adapter, as well as the extension onto the indicator shaft, are both press fit. You will/may have to fiddle with the shaft extension a little to get it centred down the tool holder so that there is little enough friction to allow for proper operation. I've included the Fusion 360 file if you need to make adjustments for your own needs. Most measurements are parameterized for easy adjustment. Feel free to contact me if you need any assistance or a custom version made.