AutoMeter Gauge "Z" Series Boost - Help

[Casey Ray]

I currently have an AutoMeter Boost Gauge "Z" series that I installed years ago into the intake horn. I have purchased a "CoolTubz" intake that I need to drill and tap for the gauge, however I no longer have the original instructions, so what I need is the size drill and tap to use? I tried looking online but couldn't find what I'm looking for. Can anyone fill me in with the needed info?



Much appreciated,



Casey

 

[Diesel Manor]

should be 1/8"NPT (National Pipe thread) and the bit is a size "R"



DieselManor - Accessories