In this video I show how to upgrade a Mercruiser Thunderbolt IV ignition system to a new Delco EST ignition. This upgrade is simpler than a Thunderbolt V upgrade but similar. If you want to know more of the details on this upgrade watch my series on the Thunderbolt V upgrade here:
• Mercruiser Thunderbolt...
I didn’t show how to set the timing but I have covered this in part 5 in the series linked above.
I now sell a GM Delphi ignition module mounted to a heavy duty steel bracket. This solves the main hurdle of the Delco EST upgrade kit. See this video for more information:
• Mercruiser 4.3 5c - Th...
Негізгі бет Mercruiser 4.3 5b - Thunderbolt IV Easier Upgrade
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