Buckaroo Posted June 17, 2017 Report Share Posted June 17, 2017 I was able to smooth out my engine in the 2000 to 2600 rpm especially. She now runs like a Rolex watch! Question? I've heard that with the rpm range in the 5200 to 5500 which is typical cruise the butterflies are open so much the carb balance in cruise is a non issue. What is important is proper idle and carb harmony within the lower rpm ranges. Is this true?? Link to comment Share on other sites More sharing options...
procharger Posted June 18, 2017 Report Share Posted June 18, 2017 Yep, at idle helps with starting your bird. Close as you can in mid range. Link to comment Share on other sites More sharing options...
Buckaroo Posted June 18, 2017 Author Report Share Posted June 18, 2017 She really started fast since the balance! I could feel the throb in the 2300 range and now she's smooth! Link to comment Share on other sites More sharing options...
Mac Bowden Posted June 18, 2017 Report Share Posted June 18, 2017 That depends on whether or not you are on the ground and have some paper with you ! Link to comment Share on other sites More sharing options...
Roger Lee Posted June 18, 2017 Report Share Posted June 18, 2017 You are correct that once you get up in cruise rpms the balance tube is too small have have any real effect. This is one reason I prefer to sync carbs at idle and 3300-3500 rpm. 3500 is more representative of the fuel / air flow and you are now out of the idle circuit starting to use the main jet. 2500 rpm is still using the idle circuit. Most that sync down at 2500 will have the sync start to split again at higher rpms. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted June 19, 2017 Report Share Posted June 19, 2017 I sync at 3500rpm, seems to work very well and the engine is quite smooth. Link to comment Share on other sites More sharing options...
Buckaroo Posted June 19, 2017 Author Report Share Posted June 19, 2017 I was happy to hear that at cruise with a unbalanced situation you're not tearing the engine components apart. Link to comment Share on other sites More sharing options...
Roger Lee Posted June 19, 2017 Report Share Posted June 19, 2017 You aren't tearing anything apart it just isn't good over the long term. Balance grasshopper, balance for long life. Link to comment Share on other sites More sharing options...
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