Bob log, odd exhaust leak, help needed June 28, 2010, 09:02:30 PM I need help on my 1988 Turbo Coupe.I just put on my nice new Bob's Log, and I have an exhaust leak...One the cylinder head, just below the exhaust ports, there are holes that go through to the exhaust port. The holes are about 1/2" in diameter. The log does not cover these hole sufficiently to ensure they do not leak.I am guessing that these hole should be plugged, but how? Shiny Side Up!Bill Quote Selected
Bob log, odd exhaust leak, help needed Reply #1 – June 28, 2010, 09:32:56 PM If I recall, I tapped mine for 5/16-18 threads and ran a bolt into it and cut if off smooth. Quote Selected
Bob log, odd exhaust leak, help needed Reply #2 – July 02, 2010, 07:03:51 AM Quote from: Chuck W;326745If I recall, I tapped mine for 5/16-18 threads and ran a bolt into it and cut if off smooth.I tapped all four to 1/8NPT and made steel plugs for them... all is quiet now!Apparently, the head on my car is not a Turbo Coupe head, rather it is from a N/A engine. Shiny Side Up!Bill Quote Selected
Bob log, odd exhaust leak, help needed Reply #3 – July 06, 2010, 11:27:29 AM 5/16 set screw, they will dissapere up in the hole and you will not have to grind any thing Quote Selected
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