I don't know how restrictive logs are, I've never ran any, but if they will allow it then go to a less agressive impeller to get the RPM up into some power.īut I don't think you are going to see much more than 300-400 RPM gain even if you optimize impeller cut. If you feel the engine is tuned pretty close, then your' option is to see what impeller you have in the jet. (But still under 6000 being an Extreme Marine grind. My guess would be it is at a much higher RPM than where yours is peaking. What impeller is in your jet? Was that 600 HP on the Dyno and if so at what RPM? That will NOT change the RPM at all, only the hull speed on the water. ![]() When it comes to RPM, and absorbed HP, jets don't care about things like current, wind, weight, etc. It would be "better" with a B or an A/B cut, but I don't mind trading a couple hundred RPM for better cruising fuel consumption. With an A impeller in a Berk JG with Place, loader, droop, shoe and plate in a 79 Miller 5400 is MAX it will turn and around 80 MPH. ![]() Click to expand.What makes you think it will rev that high? I have an almost identicle motor as yours (except small Brodix heads and 2 750's on a TR), 575HP dynoed at around 5600 on the Dyno.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |