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Old 07-27-2003, 04:07   #1 (permalink)
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XR6's

All xr6 models (excl BA series) have more power than the standard engine. Excl VCT, how is this done? What specific components have been changed to increase output?
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Old 07-27-2003, 04:10   #2 (permalink)
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Re: XR6's

Camshaft and head work.

Oh and a red rocker cover!!!

Diff ratio upgrade helps as well
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Old 07-27-2003, 05:14   #3 (permalink)
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Re: XR6's

Yeah, basically revised head and better cam.
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Old 07-27-2003, 05:24   #4 (permalink)
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Re: XR6's

There's one for sale at Franks Capital Parts Plus in Queanbeyan (NSW). Don't know how much, but may be cheaper than getting this work done to your existing engine.
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Old 07-27-2003, 20:01   #5 (permalink)
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Re: XR6's

Also, A higher pressure fuel system (Pump and reg, aprox 50kpa above std), as well as a different ECU.
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Old 07-27-2003, 20:03   #6 (permalink)
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Re: XR6's

also has the addaptive shift gearbox, dunno how helpful it is though :)
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Old 07-27-2003, 20:20   #7 (permalink)
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Re: XR6's

Quote:
Originally Posted by EFFalcon
also has the addaptive shift gearbox, dunno how helpful it is though :)
Only on AUs - E series XRs did not get adaptive shift (but the EL GT and EL Fairlane by Tickford did)
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Last edited by JC-XR8; 07-27-2003 at 20:24.
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Old 07-30-2003, 01:15   #8 (permalink)
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Re: XR6's

cam, head work, bigger valves, different computer, different pistons for more compression, higher fuel pressure regulator...thats all i think...
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Old 07-30-2003, 21:18   #9 (permalink)
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The larger exhaust valves only came in with the EF XR6 - the EB and ED XR6 have std valves. Higher compression pistons are also from the EF - std EF comp is 9.3:1 (and EF XR6 goes up to 9.34:1 with smaller chamber volumes) - on the EB and ED XR6 the compression was taken up to 9:1 from 8:8 by just reducing the volume of the combustion chambers (by shaving the head or with different head gasket or by different shaped casting I'm not sure).

On the EF they also went to a different crankshaft design which apparently is smoother than the earlier ones - but that different crank is common to all EF's, not just the XR6.

I've also heard all the XR6's were factory ballanced too - but not sure about that.

Edited to correct mistake with compression ratios.
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Old 08-02-2003, 07:52   #10 (permalink)
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Re: XR6's

2mm bigger exhaust valve and higher pressure fuel pump. Never knew anything about the hgiher compression and cam though. Is it a different cam or just has changed duration and lift due to bigger exhaust valves? All this for 7kw?
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