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Steve Tinker · 11-09-2010, 09:10 PM

I can recommend the Flat 6 underdrive pulley. Mine has been on for 5,000km without a hitch.
I was originally concerned about alternator output at low revs (the accessories are running slower). I tested the alternator output with the original pulley fitted then with Jakes pulley fitted. By the time the engine revs reached 1,250 rpm, the alternator was charging well. Not an issue.
Two benefits you will get with the pulley is a good increase in torque at low to medium revs and a decrease in accessory noise in the cabin.
Five star buy......

11-09-2010, 09:10 PM	#4
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	I can recommend the Flat 6 underdrive pulley. Mine has been on for 5,000km without a hitch. I was originally concerned about alternator output at low revs (the accessories are running slower). I tested the alternator output with the original pulley fitted then with Jakes pulley fitted. By the time the engine revs reached 1,250 rpm, the alternator was charging well. Not an issue. Two benefits you will get with the pulley is a good increase in torque at low to medium revs and a decrease in accessory noise in the cabin. Five star buy...... __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.