jestlurnin
SILVER Star
Good morning folks.
Been going down the timing/distributor rabbit hole on mud and I’m currently second guessing my timing light procedure . My goal is to tune the 2F properly after getting rid of a Webber carb in favor of the city racer aftermarket unit. See image below for said light and current set up. Not the most expensive timing light in the world but I believe it’s served me well over the last 8ish years with my old 60, old 40, and current 45.
Background: 78’ FJ55, 2F engine (I believe original), city racer aftermarket carb, Davis unified ignition distributor (see image below).
I understand the line on the flywheel is TDC and the BB is 7 degrees BTDC. The “pointer” in my window is present and easy to see. Both TDC line and BB have been painted for better viewing.
My 1st question: when attempting to set my timing at 7 degrees BTDC (window pointer on BB) should I set my timing light to 7 degrees of advance or set my timing light to 0 degrees of advance?
My guesss: if my timing light is set at 0 degrees of advance the window pointer should line up with the TDC line on flywheel and if I set my timing light at 7 degrees of advance the BB should line up with the window pointer which is the starting point I’m looking to achieve.
If I turn the distributor clockwise after lining up the BB with the pointer and my timing light at 7 degrees of advance it will move the BB “down” in the window or father towards the passenger side of the rig. and by turning the distributor clockwise I will be advancing my timing further.
Can someone confirm or deny my timing light/timing procedure pretty please.
2nd question: do I want to disconnect the vacuum line on the distributor prior to setting timing? The vacuum line goes from the distributor to the base of the carb next to the idle mixture screw.
Thanks in advance for any help!
Been going down the timing/distributor rabbit hole on mud and I’m currently second guessing my timing light procedure . My goal is to tune the 2F properly after getting rid of a Webber carb in favor of the city racer aftermarket unit. See image below for said light and current set up. Not the most expensive timing light in the world but I believe it’s served me well over the last 8ish years with my old 60, old 40, and current 45.
Background: 78’ FJ55, 2F engine (I believe original), city racer aftermarket carb, Davis unified ignition distributor (see image below).
I understand the line on the flywheel is TDC and the BB is 7 degrees BTDC. The “pointer” in my window is present and easy to see. Both TDC line and BB have been painted for better viewing.
My 1st question: when attempting to set my timing at 7 degrees BTDC (window pointer on BB) should I set my timing light to 7 degrees of advance or set my timing light to 0 degrees of advance?
My guesss: if my timing light is set at 0 degrees of advance the window pointer should line up with the TDC line on flywheel and if I set my timing light at 7 degrees of advance the BB should line up with the window pointer which is the starting point I’m looking to achieve.
If I turn the distributor clockwise after lining up the BB with the pointer and my timing light at 7 degrees of advance it will move the BB “down” in the window or father towards the passenger side of the rig. and by turning the distributor clockwise I will be advancing my timing further.
Can someone confirm or deny my timing light/timing procedure pretty please.
2nd question: do I want to disconnect the vacuum line on the distributor prior to setting timing? The vacuum line goes from the distributor to the base of the carb next to the idle mixture screw.
Thanks in advance for any help!