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I need some help asap with my turboed non-ves 800.
This is my first 53 series turbo set-up and I just took it out today for the first test run and I need some help with the tuning. I never ran a turbo on a 2-stroke before.
I am at approx 1300 ft and the temp was approx -17c or 2f.
My current set up is 520 mains, 50 pilots, 145 starter jets, 9efy02-61 needles in the #3 position, with powerjets. Running 50/50 premium/race fuel.
My first pass it was sputtering really bad, 3-5 psi boost and no power. My fuel pressure at idle was 5psi.
I pulled the plugs and they were soaked in fuel. I didn't have the tools to rejet so I turned in the powerjets a 1/2 turn and retested. It cleaned up the performance a bit. I know I am way too rich so I turned them in all the way and backed them out a 1/4 turn. It is running better but still not good enough, my egts are around 1200f. I think I will drop the mains 4-5 sizes.
Now my boost is around 10psi. I turned in the adjusting screw on the regulator 3-4 turns and even out 3-4 turns and the boost stays right aroung 10psi.
What is the proper way to adjust the boost? Is turning the screw in more or less boost?
And do I have to adjust the fuel regulator or will it compensate the fuel with the boost line at the regulator?
Should I leave the fuel pressure at idle at 5psi, rejet and turn the powerjets out 1 1/2 turns and retry?
Should I go lower than 4-5 sizes on the mains?
Do I have to adjust the powerjets if I increase or decrease the boost?
Right now it seems to only have just as much power as a non turboed 800 motor
Any info and help on this would be great
This is my first 53 series turbo set-up and I just took it out today for the first test run and I need some help with the tuning. I never ran a turbo on a 2-stroke before.
I am at approx 1300 ft and the temp was approx -17c or 2f.
My current set up is 520 mains, 50 pilots, 145 starter jets, 9efy02-61 needles in the #3 position, with powerjets. Running 50/50 premium/race fuel.
My first pass it was sputtering really bad, 3-5 psi boost and no power. My fuel pressure at idle was 5psi.
I pulled the plugs and they were soaked in fuel. I didn't have the tools to rejet so I turned in the powerjets a 1/2 turn and retested. It cleaned up the performance a bit. I know I am way too rich so I turned them in all the way and backed them out a 1/4 turn. It is running better but still not good enough, my egts are around 1200f. I think I will drop the mains 4-5 sizes.
Now my boost is around 10psi. I turned in the adjusting screw on the regulator 3-4 turns and even out 3-4 turns and the boost stays right aroung 10psi.
What is the proper way to adjust the boost? Is turning the screw in more or less boost?
And do I have to adjust the fuel regulator or will it compensate the fuel with the boost line at the regulator?
Should I leave the fuel pressure at idle at 5psi, rejet and turn the powerjets out 1 1/2 turns and retry?
Should I go lower than 4-5 sizes on the mains?
Do I have to adjust the powerjets if I increase or decrease the boost?
Right now it seems to only have just as much power as a non turboed 800 motor
Any info and help on this would be great
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