XR6's - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

madmelon · 07-27-2003, 04:07

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?

EBXR · 07-27-2003, 04:10

Camshaft and head work.

Oh and a red rocker cover!!!

Diff ratio upgrade helps as well

EFJase · 07-27-2003, 05:14

Yeah, basically revised head and better cam.

JC-XR8 · 07-27-2003, 05:24

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.

Bass Crazy · 07-27-2003, 20:01

Also, A higher pressure fuel system (Pump and reg, aprox 50kpa above std), as well as a different ECU.

EFFalcon · 07-27-2003, 20:03

also has the addaptive shift gearbox, dunno how helpful it is though :)

JC-XR8 · 07-27-2003, 20:20

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)

Rollin · 07-30-2003, 01:15

cam, head work, bigger valves, different computer, different pistons for more compression, higher fuel pressure regulator...thats all i think...

EDFUTURA · 07-30-2003, 21:18

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.

Cobra · 08-02-2003, 07:52

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?