PRPVinyl Posted September 21, 2013 Report Share Posted September 21, 2013 So I went over to load up the rest of the Mark VIII stuff to take to the transfer station to throw away tomorrow. So then I decided to tinker with the Teksid engine for a little bit. First thing I learned is that the head on the Harbor Freight bore scope camera is just a hair too large to fit into a 5/8" spark plug hole.Second the way the spark plug holes are cut into the 4V heads on a 93 Mark VIII you can get get a compression tester to screw directly into the head, the threads are not cut all of the way to the top of the spark plug hole. So I thought maybe I could use a spark plug non -fouler to adapt it in. I ran into the same problem with the non fouler, I had to grind about 1/2"off the top of the non fouler to get the compression tester to be able to screw in to it.So now that I have all of that worked out tomorrow after I go to the transfer station I can take a battery and remote starter over and do a compression check on the TeksidMatt Link to comment Share on other sites More sharing options...