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Australian XR8 Member
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170 Posts
Discussion Starter #1
I asked Ford NZ if they were sure there was no 220kw XR8 coming out. They said no. Car was delivered first week of May. The very same day, Ford NZ publicly announced the 220kw upgrade. (of course no one told me, and had I not been picking up the car, I would have read the news!!!!
Spoke to Customer Services Manager at Ford NZ, he said tough luck, not interested, put up with 200kw.
Does anyone have a full list of change specs on the 220kw and any idea of feasabilty of retrofitting? I'm thinking of 3 options
1. upgrade to 220kw spec.
2. Stroke it (would need to find kit here and then find someone who can do the job (have met 1,000,000,000's of expert V8 mechanics, until something is forgotten or goes wrong).
3. Put up with a good chassis begging for release of more power (frustrating). The 200kw really should go better than it does!!!
 

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Australian XR8 Member
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170 Posts
Discussion Starter #3
Yes, I've considered the 'may the forced be with you' option. Last person I heard of doing this was boosting about shutting down HSV's etc, then blew his motor, then has been very quiet. Don't know about reliability long term though. The CAPA site is good for ideas. Hmmmm....option 4, yes you're right, something to consider investing in!
 

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Ford Enhancement Specialist
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399 Posts
220 up grade

speak to your herrod dealer in nz we have plenty of options that he can supply you with to produce more than 220 kw up .
 

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The Third Power
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1,332 Posts
There you go Option 5...

not that I know much about Herrod but Im sure they could help you out with options 1-4 and everything in between
 

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Two SC 61's = trouble
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6,360 Posts
I bet if you tidied up heads,exhaust side especialy & good exhaust you would be surprised.Check out size of throttle bodies,220Kw has 70mm and inlet machined to suit.Maf I'm not too sure about but the 200kw had 70mm to my knowledge.
 

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Registered
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453 Posts
AUII XR8 said:
Does anyone have a full list of change specs on the 220kw and
The heads have larger valves and have been ported substantially
Cam and rockers are unique to 220kw
Throttle body is 220 also I have an idea that the intake manifold could be different
PCM is 220
 

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Australian XR8 Member
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170 Posts
Discussion Starter #10
Yes Option 5.

Speak to my Herrod MSport dealer. Have been taken for a spin in his car - awesome beast. Total package of suspension, interior, and motor - most impressive. The new Herrod mod'd XR6 I've seen over here at the dealer would possibly thrash even the 220kw XR8 'cos of the weight difference in the front end.
 

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Aussie Falcon Enthusiast
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478 Posts
Here's my suggestion if you want more grunt and dont want to spend a fortune. This is what I have beend thinking of doing to my Sprint if I can't afford a 351 swap in the next couple of years.

Swap out the factory heads for a set of AFR 165cc aluminium heads. These are fully cnc ported from factory and have decent valve gear too. Have the lower intake ported by someone who is familiar with the heads. Get a custom cam to match the new setup. Voila you should have one asphalt kicking beast.

If you want more details have a look here:

http://www.flowtechinduction.com/eval.html

Ed Curtis who runs that company has an awesome reputation with the Mustang guys in the States and I would have no hesitation in contacting him myself were I to go ahead with that sort of combination. Also note that were you to employ his services you could pick up cheap a lower Cobra intake from US somewhere, have it shipped to him for the work and he could send it over.

All you'd need to do after is find a decent workshop to install the gear and someplace to tweak the EEC for optimum performance. An aftermarket MAF would also be a good idea, although the 70mm units being used in AU > XRs aren't bad.

Btw side benefits of these mods are that you drop 20kg off the front end of the car and unless someone *really* looks hard and know what they're looking at they wont know anything has changed.
 

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Two SC 61's = trouble
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6,360 Posts
Way to go Anakha:He "only" wanted 220kw.Yes:
You cannot go past aftermarket heads,there are sooo many.Good valve gear thrown in too.Alot of compitition makes good products.
$7kAu =$9kN.Z approx
 

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Pursuit Reincarnation Dog
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7,777 Posts
Re: Re: XR8 Retrofit 200 to 220kw?

mbrown42 said:
The heads have larger valves and have been ported substantially........
Substantially? Not by my dictionary.

The heads are matched to the gasket faces by machining the first 5mm of the port or so. There is also some machining around the valve area, but it is all very minor. Some heads I have seen still have a step in the ports from this machining. You need to realise this is all done by Perfectune in bulk and using automated equipment.

Aussie Pete's heads are off the car - not up to scratch for me! Herrods are fixing it all this time!

As for power - mate, if you drive one of these strokers you'd realise what you are missing!
 

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Two SC 61's = trouble
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6,360 Posts
Exactly Aus.Pete: But you'd need heads that flo that horsepower no matter what the capacity is,good thing with a strocker is less r.p.m to get the same power,torque is HEAPS better too,ha?
Good heads tidied up nice clean combustion chamber can take more spark advance also.Especially on the old clevo heads,remember them?......... Unshrouded valves help.
Then there is the inlet!
 
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