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Old 05-13-2003, 22:23   #1 (permalink)
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XR6 - Standard I6 engine differances

what are the differances between the standard and the non vct xr6 engine? cam compresion?, what does a standard xr6 donk put out?
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Old 05-13-2003, 22:39   #2 (permalink)
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There are two differences. One being the cam is slightly more sporty, and the exhaust valve is around 2mm larger, everything else is the same mechanically.

Electronically the XR6 gets more fuel, and sportier tuning, if auto it has different shift points also. Otherwise theres next to no difference really.

XR6 puts out 164kw standard
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Old 05-14-2003, 01:13   #3 (permalink)
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Dont forget the increased compression ratio :D
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Old 05-14-2003, 01:42   #4 (permalink)
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how does it get its extra compression?
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Old 05-14-2003, 01:44   #5 (permalink)
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differnt piston dish volume and ifferent head chamber volume
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Old 05-14-2003, 03:55   #6 (permalink)
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Quote:
Originally posted by NZ
differnt piston dish volume and ifferent head chamber volume
Incorrect
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Old 05-14-2003, 04:04   #7 (permalink)
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feel welcome to correct me
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Old 05-14-2003, 04:29   #8 (permalink)
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Quote:
Originally posted by NZ
feel welcome to correct me
i seccond that
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Old 05-14-2003, 04:47   #9 (permalink)
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Quote:
Originally posted by South
There are two differences. One being the cam is slightly more sporty, and the exhaust valve is around 2mm larger, everything else is the same mechanically.

Electronically the XR6 gets more fuel, and sportier tuning, if auto it has different shift points also. Otherwise theres next to no difference really.

XR6 puts out 164kw standard
Almost correct. (AU Falcon std compared to HP (not VCT))

Cam is different
Valves are the same (not larger on XR/HP) (valves are same size on all AU I6 engines
Fuel pressure regulator is set at higher pressure on XR/HP
Combustion chamber is different shape
Intake ports are different size on HP/XR
Pistons are the same.
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Old 05-15-2003, 03:31   #10 (permalink)
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The valves were bigger. Thats why the combustion chambers were different.
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