sumocomputers
Petty Officer 2nd Class
- Joined
- Feb 23, 2015
- Messages
- 123
After taking the boat out with my buddy to do the timing at 5000 RPM in the open ocean, I realized it was way too fast & choppy, not to mention all the salt spray. So I looked at the Top Secret File for the Reeves Timing Method, and had some questions for my '89 Johnson 70 after doing a full Link and Sync:
1. It says remove all the spark plugs and use a spark plug tester at 7/16" for cylinder 1 (I am assuming also grounded to engine). Any need to do anything with the other two cylinder wires? Is removing the spark plugs and wires enough, or do the wires need to be left attached the coils and grounded to engine? Seems dangerous to potentially have fuel and fumes coming out the spark plug holes/cylinder head with spark nearby.
2. My sticker says 19BTDC +/-1, so I was going to shoot for 18BTDC final (14BTDC when cranking). When cranking with the timing light, does the mark in question light up in line with the TDC pointer, or off to one side? And if one side, which side? Sorry if this obvious, but this is new for me.
3. It says have the throttle at full. I am assuming to just remove the throttle cable and manually advance it to full at the engine, since I don't think it cranks in gear. I have already set the WOT limit as part of Link and Sync.
4. I just don't quite understand this part:
"Set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary)".
Wouldn't it already be tight, or is this to keep it from moving while cranking?
Thanks,
Chris
1. It says remove all the spark plugs and use a spark plug tester at 7/16" for cylinder 1 (I am assuming also grounded to engine). Any need to do anything with the other two cylinder wires? Is removing the spark plugs and wires enough, or do the wires need to be left attached the coils and grounded to engine? Seems dangerous to potentially have fuel and fumes coming out the spark plug holes/cylinder head with spark nearby.
2. My sticker says 19BTDC +/-1, so I was going to shoot for 18BTDC final (14BTDC when cranking). When cranking with the timing light, does the mark in question light up in line with the TDC pointer, or off to one side? And if one side, which side? Sorry if this obvious, but this is new for me.
3. It says have the throttle at full. I am assuming to just remove the throttle cable and manually advance it to full at the engine, since I don't think it cranks in gear. I have already set the WOT limit as part of Link and Sync.
4. I just don't quite understand this part:
"Set that timer base under the flywheel tight against the rubber stop on the end of the full spark timer advance stop screw (wire it against that stop if necessary)".
Wouldn't it already be tight, or is this to keep it from moving while cranking?
Thanks,
Chris