This measurement
https://www.google.co.uk/search?q=piston+compression+height&client=firefox-b&tbm=isch&imgil=LwaRdImiwPn2KM%253A%253BdAf1eNWuHopLWM%253Bhttp%25253A%25252F%25252Fgarage.grumpysperformance.com%25252Findex.php%25253Fthreads%25252Fcalculating-piston-pin-height-compression-height.5064%25252F&source=iu&pf=m&fir=LwaRdImiwPn2KM%253A%252CdAf1eNWuHopLWM%252C_&usg=__DSaqQmX5l7f7jwXoRxNDn0SiQHY%3D&biw=1440&bih=771&ved=0ahUKEwjEpqXKgvDTAhVPOMAKHQisC4EQyjcIfw&ei=vqIYWcTPJs_wgAaI2K6ICA#imgrc=LwaRdImiwPn2KM: