Quote:
Originally Posted by turbo2387
i'm not familiar with your engine or how boats work. however excessive heat at WOT relates to two things. too much fuel at WOT or not enough turbo.
can you back off some fueling above 3000rpms? just enough to pull the heat out of it? that would be the cheapest fix. a little tuning with the ol laptop goes a long way.
what is your drive pressure? if your housings are to small you could be choking up the exhaust to much and building heat instead of power. again by loosing a bit of potential over fueling up top DP would go down. if you are seeing high drive pressures this might help. just because you take a bit of fuel away doesn't always mean you loose HP.
If drive pressures are too high which means your housings are probably to small for those rpms, would it be possible to install external wastegates somewhere in the exhaust, or modify your current housings to flow better? this would allow the engine to breath from a bigger straw and free up some ponies and loose some heat/drive pressure. |
Donīt have the drivepressure readings. Will make fittings for sender during winter. Bit tricky with the watercooled housings.