Thread: Re-pitch prop or new one?
06-16-2011, 09:31 AM #1
Re-pitch prop or new one?
Wondering if my prop has something to do with my speed and rpm's. I have a 07 RXP, I have added a Riva Thru hull exhaust, x-charger, XS intercooler, 42 injectors, riva ride plate and girdle, pump wedge, 4" rear air intake, and a 15/20 re-pitched to 14/19 prop. Now I bought the prop already re-pitched to 14/19 and it was suggested to me that it would be a good starting point. Last weekend I hit 73.6 at around 8150 RPMS. Not bad but I think I can do better. Would a 15/20 prop be better in my situation or maybe re-pitch the one I am using now? I am also putting on a RRFPR soon cause I was told that I needed it with the mods that I have. All suggestions are appreciated.
06-16-2011, 09:43 AM #2
Rpm's are right where you want to be with a stock ecu.
06-16-2011, 09:48 AM #3
what intake grate are you using ?
06-16-2011, 09:56 AM #4
Wait! You are not running a RRFPR with the 42's, Fizzle, and X-charger? You are lean, lean, lean. One of the reasons your speed is down. Also, get an 81mm nozzle and pitch back up.
06-16-2011, 09:59 AM #5
RPM's are correct as Troy said. Get your AFR's right and the speed should come. If you are too fat or too lean you can a will lose speed. Also, your engine temps can be high as a result from being too lean or too rich.
06-16-2011, 10:07 AM #6
06-16-2011, 10:09 AM #7
06-22-2011, 03:04 AM #8
I got the regulator and I am setting up in a remote location. Most likely underneath where the stock air intake used to. When I was putting I back together and in the tank I noticed that when the spring got compressd it was not straight up and down. Since I am using a new adjustable regulator in a remote location do I need to have the spring in? I would think not but maybe I'm wrong. AlsO, the adjustable regulator that I bought has 4 holes where I can run the lines to and from. I'm guessing I am only needing 3 of them right? Do I just plug the other one that Im not using off? If so, which one? The way I am thinking is, the gauge goes on one side, the fuel line coming from the fuel tank goes to the back of the gauge using a t and the one on the back goes back to the fuel tank. I know it sounds confusing. I will take a picture when I get home. Right now I am on break at work. I would aappreciate it if some one could give me some guidance on how to run the line to and from the regulator. Thank and hope to have this figured out today
06-22-2011, 11:19 AM #9
- Join Date
- Jul 2007
- Montgomery, AL
You should be banging on the limiter with a 14/19. If you get the RRFPR and get some more fuel to it you will find you need the 15/20. With my mods and a 15/20 i am spot on 8100.
You are lean and that is killing your RPM's
06-22-2011, 11:53 AM #10
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