The motor starts hard, but I'll live with that. Once started, it runs good for a long time unless I decide to go above 3200 rpms. Then the buzzer goes off. Motor has an aftermarket nosecone/low level water intakes. Motor History. Engine was 1 of a dual set up on some sort of race boat. Got both engines and made one decent one(maybe). Motor came with no thermostats, 25 pitch ss thru blade exhaust props and has ul-77 plugs. Also, came with and is still on jack plates. Replaced head gaskets, added thermostats, 6 new coils, changed prop to 14.5 w 19, and new water pump. Cannot get rpms over 4600. The major question is this. Nose cone intakes appear to only allow about 12% of the water volume that the now bondoed over stock intakes allowed. Don't know what the water pressure is though. My theory is that the pump can't get enough water to cool the engine at higher rpms. However, I have also heard that the buzzer will go off if the engine can't get enough fuel at those rpm's Any ideas out there? Thanks
