When valve overlap causes exhaust gas reversion into the intake manifold, this reduces the quality of the combustion mixture entering the combustion chamber. This causes a mixture that’s harder to ignite along with a slower burn rate. This can become even more of a problem in forced induction engine applications. The end result is less volumetric efficiency, which means reduced power output, lower mileage and increased emissions.

The use of SREC’s anti-reversion shear plate will minimize this effect as it uses the momentum of the reversion gas with the velocity of the incoming fuel/air mixture to shear raw fuel dripping from the carburetor base to enhance atomization.

Sonny’s Racing Engines & Components has a number of different style of anti-reversion shear plates with different bore sizes for both 2-bbl and 4-bbl carburetors for anything from a street rod on up to a Pro Stock application.


For more information, contact:

Sonny’s Racing Engines & Components
352 Training Center Rd.
Lynchburg, VA  24502
Tel       (434) 239-1009
Fax       (434) 239-1026
Web       www.SonnysRacingEngines.com
E-Mail   rod@sonnysracingengines.com


When valve overlap causes exhaust gas reversion into the intake manifold, this reduces the quality of the combustion mixture entering the combustion chamber. This causes a mixture that’s harder to ignite along with a slower burn rate. This can become even more of a problem in forced induction engine applications. The end result is less volumetric efficiency, which means reduced power output, lower mileage and increased emissions.

The use of SREC’s anti-reversion shear plate will minimize this effect as it uses the momentum of the reversion gas with the velocity of the incoming fuel/air mixture to shear raw fuel dripping from the carburetor base to enhance atomization.

Sonny’s Racing Engines & Components has a number of different style of anti-reversion shear plates with different bore sizes for both 2-bbl and 4-bbl carburetors for anything from a street rod on up to a Pro Stock application.


For more information, contact:

Sonny’s Racing Engines & Components
352 Training Center Rd.
Lynchburg, VA  24502
Tel       (434) 239-1009
Fax       (434) 239-1026
Web       www.SonnysRacingEngines.com
E-Mail   rod@sonnysracingengines.com