cgmg
Senior Member
- Joined
- Oct 30, 2003
- Messages
- 1,149
- Location
- El Paso, IL.
- Aircraft
- Empty hangar right now, have owned and flown Air Command & RAF
- Total Flight Time
- 375
I've been trying to dial in my carbs to get my 503 exhaust gas temps into spec, which is 43 degrees or less difference between cylinders. The best I've been able to do is get the temps about 20 degrees apart up until 6000 rpm or higher. At wide open throttle, the difference climbs to 80 degrees plus, with the #1 cylinder running hotter. The only way I've been able to overcome this is to set the carbs so cylinder #2 runs hotter up to the 6000 rpm point, but being over the recommended temperature difference. This doesn't seem like the right thing to do, so I'm leaving the carbs set for temps to be close up to the 6000 rpm point.
Anyone out there have any suggestions as to what is going on, or is this typical of 503's. I've checked my clips, needle jets, and jet needles. Everything matches up. The only changes I made over the winter were rebuilding #2 carb, which is older than the #1 carb. I also changed my main jets to 155 from 158.
Any help, or things to look for, would be greatly appreciated.
Mark
Anyone out there have any suggestions as to what is going on, or is this typical of 503's. I've checked my clips, needle jets, and jet needles. Everything matches up. The only changes I made over the winter were rebuilding #2 carb, which is older than the #1 carb. I also changed my main jets to 155 from 158.
Any help, or things to look for, would be greatly appreciated.
Mark