Differences
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techtalk:evo:carb02 [2020/08/30 03:03] ixl2relax [Carb Farts (coughing)] |
techtalk:evo:carb02 [2020/09/02 17:56] ixl2relax [Reversion - Carb Fog] |
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| Reversion is created in the engine combustion cycle by the relationship between the cams and the exhaust system. Specifically, between the harmonic waves created in the exhaust pipes and the overlap of the exhaust valve about to close while the intake valve is already opening. This overlap period, where both valves are open at the same time, is usually extended in high lift cams, causing the exhaust system to have a great affect on the cylinder fill operation. The exhaust functioning can have a positive or negative affect. | Reversion is created in the engine combustion cycle by the relationship between the cams and the exhaust system. Specifically, between the harmonic waves created in the exhaust pipes and the overlap of the exhaust valve about to close while the intake valve is already opening. This overlap period, where both valves are open at the same time, is usually extended in high lift cams, causing the exhaust system to have a great affect on the cylinder fill operation. The exhaust functioning can have a positive or negative affect. | ||
| - | If/when reversion is occuring, the intake charge ends up passing through the carb three times: pulled in, pushed out, and pulled back in again. Each time it is picking up fuel making the mixture richer. ((Based on info from Aaron Wilson from the XLForum (aswracing) - http://xlforum.net/vbportal/forums/showthread.php?t=1028905 - Post#12)) | + | If/when reversion is occuring, the intake charge ends up passing through the carb three times: pulled in, pushed out, and pulled back in again. Each time it is picking up fuel making the mixture richer. ((Based on info from Aaron Wilson from the XLForum (aswracing) - http://xlforum.net/vbportal/forums/showthread.php?t=1028905 - Post#15)) |
| You can read more in the REF Section on [[techtalk:evo:carb04#exhaust_pipes_cams_-_power_or_reversion|Exhaust Pipes & Cams - Power or Reversion.]] | You can read more in the REF Section on [[techtalk:evo:carb04#exhaust_pipes_cams_-_power_or_reversion|Exhaust Pipes & Cams - Power or Reversion.]] | ||
