4.2 XKR S/C pulley size
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From: West Midlands UK
4.2 XKR S/C pulley size
Hello,
Im wondering if anyone knows the size of a stock 4.2 S/C upper pulley - reason being I think ive been lied to about an upgrade. Car is at the tuners and was running stock power on the dyno, after a remap im still only getting about 10 whp more.
Im wondering if anyone knows the size of a stock 4.2 S/C upper pulley - reason being I think ive been lied to about an upgrade. Car is at the tuners and was running stock power on the dyno, after a remap im still only getting about 10 whp more.
I suspect it's not the pulley but the tuner pulley without a proper tune will gain minimum power If you need a proper tune. Let me know
__________________
2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 112.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 SC (Alpha Jag ECU, TCU tune, crank pulley), 600+ HP, 11.6 sec 1/4th mi 122mph, 7.6sec 1/8th mi
2018 Jaguar F-Type (AlphaJag ECU TCU, lower upper pulleys intake) 10.77 ,131mph ,700hp
Last edited by AlexJag; Jan 25, 2021 at 05:49 PM.
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