Join Date: Apr 2006
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Option, the PHRF ratings are fairly simple.
Your certificate is based on a standard production boat. When you apply for a certificate you are supposed to let your local committee know about ALL custom or variant equipment on the boat. And when you change equipment, you are supposed to notify the committee again, and ask for a re-rating.
They may change your rating based on the added weight, or they may dimiss it as negligible. They may decide your boat is faster because if has more "ballast", or they may decide you are slower because the boat is heavier. Or they may tell you to keep racing for another season and they'll adjust it after they see what difference it makes.
You may want to see what difference the engine makes and then say something about it, when you notify the committee.
If someone were to inspect your boat and find the equipment materially differed from what was on your certificate, you could be DSQ'd from a race, or a season.