01-30-2010, 05:13 AM #1
Loss of RPM's over a period of time??? Help
Hi I have just recently had a race engine built for my 2008 RXT about 20hrs ago, the ECU is programmed to do about 9100rpm's.
Over a period of time I have gradually been loosing RPM's it went from 8900rpm - 8700rpm - 8500rpm and for the hell of me we cant put our finger on whats going on, I was hoping someone else that has been in the same predicament could help with some advice.
We have been over the following things so far:
- Checked for flapping baffles in the water box.
- Rebuilt the supercharger an hour ago.
- Checked coils.
- Checked fuel pressure.
- Leak down test.
- Checked for any signs of engine wear.
- All of these things are fine
If anyone else has any more ideas please throw them my way.
Last edited by Frog; 02-08-2010 at 05:52 AM.
01-30-2010, 05:30 AM #2
Have you checked your pump out?
Pump shoe intact?
Prop looking good?
01-30-2010, 05:37 AM #3
01-30-2010, 06:53 AM #4
- Join Date
- Mar 2008
rebuilt charger after 20hrs
Heat Fade..you running the open loop...
Is this the Les built RXT
01-30-2010, 08:13 AM #5
01-30-2010, 01:07 PM #6
Are you monitoring A/F? Any major weather changes?
01-30-2010, 03:28 PM #7
are you losing boost? what the boost & AFR im guessing with that much motor work you have to have guages
01-30-2010, 03:33 PM #8
01-30-2010, 11:03 PM #9Originally Posted by rxp12; Sportsterme; Speedskixp
Yea the weather has changed over summer 35degC compared to 20-25degC
No gauges fixed but will look into it. Was not recommended with the Mod's.
01-30-2010, 11:09 PM #10
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