986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - How often do you redline it & a story of newfound joy

blue2000s · 08-05-2010, 06:44 AM

I put the gear ratios of the 986 6-speed together with the torque curve of the 3.6 non x-51 engine. Attached is the resulting torque vs road speed curve. You always have more torque in the lower gear at redline than the next gear up for any given road speed.

If the curves crossed each other, that would be the shift point you'd want to make. If they don't cross, as with the 3.6, redline is always going to be faster.

6th gear at a redline of 7200 RPM should be about 176mph.

08-05-2010, 06:44 AM	#15
blue2000s Porscheectomy Join Date: Mar 2006 Location: Seattle Area Posts: 3,011	I put the gear ratios of the 986 6-speed together with the torque curve of the 3.6 non x-51 engine. Attached is the resulting torque vs road speed curve. You always have more torque in the lower gear at redline than the next gear up for any given road speed. If the curves crossed each other, that would be the shift point you'd want to make. If they don't cross, as with the 3.6, redline is always going to be faster. 6th gear at a redline of 7200 RPM should be about 176mph. Last edited by blue2000s; 08-05-2010 at 06:46 AM.