thegoat86
Petty Officer 2nd Class
- Joined
- Oct 12, 2014
- Messages
- 117
This should be the last of the gremlins.... hopefully. I replaced plugs and wires, noticed two wires were wrong. And further noticed the distributor was 90 degrees off. So...... I found #1 TDC compression, dropped distributor in correct alignment based on mercruiser manual, (this is thunderbolt IV ignition) Got it running, then tried to set base timing. Now all that sounds great, but my motor does not have degree timing marks. It has a v-notch. The breather cover states 8 degrees BTDC. When I time the motor to the mark, it runs rough and does not rev. If I time a half inch behind the mark, the motor revs and sounds great. I am going old school on this one by setting timing by vacuum on the water under load. But would love to have input. The intake and carb were replaced by the last owner to a four barrel setup. FYI