I changed from running an Performer RPM to a Torquer 2 and went slower at the track. 12.07 to 12.34. Will running a single plane require re-jetting the carb, different timing?
it should require more jetting - but it all depends on the engine combo -and how high you are spinning it - single planes for the most part need higher rpms to get the most out of them. your performer RPM is a good manifold to 6000 - I personally think beyond 6000 it falls off and your torquer would start to pick up the slack - so it depends how long your engine spends above 6000rpm. As for the low end - you likely lost some bottom end torque that you had with the RPM - thus reflected in your time slip.
How did the mph compare?
