I recently purchased a 1970 Arrowglass with a 120 HP I/O. The previous owner called it a Pontiac Iron Duke. He stated that the engine was overhauled 3 years ago and that it was run only a handful of hours since. The problems I'm having are that after 20 to 30 minutes of running at 3500 to 4000...
I recently purchased a 1970 Arrowglass with a 120 HP I/O. The previous owner called it a Pontiac Iron Duke. He stated that the engine was overhauled 3 years ago and that it was run only a handful of hours since. The problems I'm having are that after 20 to 30 minutes of running at 3500 to 4000...
