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| fpv_1 |
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Hey,
just wondering... what was the difference in power between stock au falcon motor output and au xr6 output. what was done to the motor to give it that extra bit, eg mods. cheers blair |
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| twr7cx |
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depends if the VCT donk or not. the normal one is different cam, ecu, higher fuel pressure reg, larger exhaust valves, higher ratio diff.
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| jim3964 |
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AU XR6 have VCT engine, standard falcon doesnt
falcon - 157Kw XR6 - 164Kw
_________________ 98 AU Falcon Futura I6 ABS & Cruise stock (The Wifes car
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| stockstandard |
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Standard AU and XR's have the same sized valves
and not all had VCT (very few did IIRC)
_________________ Stoke me a clipper, I'll be back for Christmas |
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| alfy |
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yeh there was an XR6 HP which had the standard AU motor. Disco Frank has one from memory
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| stockstandard |
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nope, the HP was not a standard AU engine
standard au = 157kw XR6 HP = 164kw (different cam, retuned ECU, 300kpa fuel pressure, and I think it still got a bit of headwork) XR6 VCT = 172kw and had VCT
_________________ Stoke me a clipper, I'll be back for Christmas |
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| downingj |
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stockstandard wrote: Standard AU and XR's have the same sized valves
and not all had VCT (very few did IIRC) Nah, XR6's have larger exhaust valves (39mm for Falcon, 41mm for XR6) The 4.0 litre XR motor also copped an increase in compression (9.3:1 for Falcon, 9.35:1 for XR6), head work, valve springs got a 5 percent higher pre-load, camshaft, cooler plugs, recalibrated knock sensor and EEC tweaks. It's a kick a** motor and is noticeably better than a stocker. Revs a lot better and harder too. Either way: Falcon = 157kw Falcon XR6 HP = 164kw Falcon XR6 VCT = 172kw |
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| stockstandard |
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downingj wrote: stockstandard wrote: Standard AU and XR's have the same sized valves and not all had VCT (very few did IIRC) Nah, XR6's have larger exhaust valves (39mm for Falcon, 41mm for XR6) The 4.0 litre XR motor also copped an increase in compression (9.3:1 for Falcon, 9.35:1 for XR6), head work, valve springs got a 5 percent higher pre-load, camshaft, cooler plugs, recalibrated knock sensor and EEC tweaks. It's a kick a** motor and is noticeably better than a stocker. Revs a lot better and harder too. Either way: Falcon = 157kw Falcon XR6 HP = 164kw Falcon XR6 VCT = 172kw Your thinking E-series. All au 6's got 41mm exhaust valves, which also have thinner valve stems compared to e-series
_________________ Stoke me a clipper, I'll be back for Christmas |
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| downingj |
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stockstandard wrote: downingj wrote: stockstandard wrote: Standard AU and XR's have the same sized valves and not all had VCT (very few did IIRC) Nah, XR6's have larger exhaust valves (39mm for Falcon, 41mm for XR6) The 4.0 litre XR motor also copped an increase in compression (9.3:1 for Falcon, 9.35:1 for XR6), head work, valve springs got a 5 percent higher pre-load, camshaft, cooler plugs, recalibrated knock sensor and EEC tweaks. It's a kick a** motor and is noticeably better than a stocker. Revs a lot better and harder too. Either way: Falcon = 157kw Falcon XR6 HP = 164kw Falcon XR6 VCT = 172kw Your thinking E-series. All au 6's got 41mm exhaust valves, which also have thinner valve stems compared to e-series Really? I know they have thinner valve stems compared to e-series, but I didn't know that a stock AU motor had 41mm exhast valves...You sure? 
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| alfy |
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stockstandard wrote: nope, the HP was not a standard AU engine
standard au = 157kw XR6 HP = 164kw (different cam, retuned ECU, 300kpa fuel pressure, and I think it still got a bit of headwork) XR6 VCT = 172kw and had VCT oops  my bad 
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| stockstandard |
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downingj wrote: stockstandard wrote: downingj wrote: stockstandard wrote: Standard AU and XR's have the same sized valves and not all had VCT (very few did IIRC) Nah, XR6's have larger exhaust valves (39mm for Falcon, 41mm for XR6) The 4.0 litre XR motor also copped an increase in compression (9.3:1 for Falcon, 9.35:1 for XR6), head work, valve springs got a 5 percent higher pre-load, camshaft, cooler plugs, recalibrated knock sensor and EEC tweaks. It's a kick a** motor and is noticeably better than a stocker. Revs a lot better and harder too. Either way: Falcon = 157kw Falcon XR6 HP = 164kw Falcon XR6 VCT = 172kw Your thinking E-series. All au 6's got 41mm exhaust valves, which also have thinner valve stems compared to e-series Really? I know they have thinner valve stems compared to e-series, but I didn't know that a stock AU motor had 41mm exhast valves...You sure? sure am. And the compression for au's was also 9.6:1 on all 6's
_________________ Stoke me a clipper, I'll be back for Christmas |
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| fpv_1 |
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cheers
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