rotaxrule1
Well-Known Member
Hello folks,
I am hopefully on the tail end of getting my 2002 RX DI project running the way I want. I just rebuilt the pump due to a leaking seal and bearings going bad, among a few other minor things. When I take it out, I can get it to about 51 (GPS) pretty easily on rough water. I am maybe hitting 6600 RPM tops. I feel like it still is a tiny bit sluggish compared to what I have read with others with this model doing about 68-6900 RPM and nearly hitting 60MPH, though I am at about 4300ft altitude. It pulls pretty good throughout the entire RPM range, but it does have an intermittent cutting out, seems to be provoked by hitting waves in a certain direction, I haven't totally pinpointed it.
So, the basics, I have a gauge on the air and fuel ports in the rail and at idle and as far as I can read through the RPM range when riding it, the air is consistently between 75-80PSI and the fuel is always over 100PSI, but due to the needle bouncing, I can't tell if it's actually reaching 107PSI. Compression in both cylinders is between 125-130PSI if I recall correctly. Check out this quick video if you want to see what I am talking about, that's just running it on the cart in the garage.
Am I being too picky? The engine does have 240 hours on it... I know it's toward the end of its service life.
I am hopefully on the tail end of getting my 2002 RX DI project running the way I want. I just rebuilt the pump due to a leaking seal and bearings going bad, among a few other minor things. When I take it out, I can get it to about 51 (GPS) pretty easily on rough water. I am maybe hitting 6600 RPM tops. I feel like it still is a tiny bit sluggish compared to what I have read with others with this model doing about 68-6900 RPM and nearly hitting 60MPH, though I am at about 4300ft altitude. It pulls pretty good throughout the entire RPM range, but it does have an intermittent cutting out, seems to be provoked by hitting waves in a certain direction, I haven't totally pinpointed it.
So, the basics, I have a gauge on the air and fuel ports in the rail and at idle and as far as I can read through the RPM range when riding it, the air is consistently between 75-80PSI and the fuel is always over 100PSI, but due to the needle bouncing, I can't tell if it's actually reaching 107PSI. Compression in both cylinders is between 125-130PSI if I recall correctly. Check out this quick video if you want to see what I am talking about, that's just running it on the cart in the garage.
Am I being too picky? The engine does have 240 hours on it... I know it's toward the end of its service life.
