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EL2 XR8 head upgrade

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NLGHIA5.0

Post subject: Re: EL2 XR8 head upgrade

Posted: Thu Aug 28, 2014 8:28 am

Smokin em up

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Age: 44

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Joined: 3rd Mar 2012

Ride: NL Fairlane Ghia V8

Location: Geelong
VIC, Australia

The smallest Deka's they make in the long style EV1, but apparently they tune real good at idle and low load conditions, being a new generation injector they don't have the tuning issues that older style injectors had under those conditions. I even had some guys say go the 80#ers, as they tune just as good, leaving a ton of headroom if I go to a 363 Dart bottom end.

But the 60's will be more than enough for now.

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XR9UTE

Post subject: Re: EL2 XR8 head upgrade

Posted: Thu Aug 28, 2014 12:43 pm

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Location: Perth
WA, Australia

{USERNAME} wrote:

The smallest Deka's they make in the long style EV1, but apparently they tune real good at idle and low load conditions, being a new generation injector they don't have the tuning issues that older style injectors had under those conditions. I even had some guys say go the 80#ers, as they tune just as good, leaving a ton of headroom if I go to a 363 Dart bottom end.

But the 60's will be more than enough for now.

Fair enough.

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xcabbi

Post subject: Re: EL2 XR8 head upgrade

Posted: Thu Aug 28, 2014 8:40 pm

Getting Side Ways

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Age: 43

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Ride: Fordrunner 5.0 Turbo

Location: Wollongong
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Also all the new Ford racing injectors are a dual cone spray pattern which is only syited to the multi valve modular stuff. Seimens still feature a single cone spray pattern so you won't wash your intake port walls.

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NLGHIA5.0

Post subject: Re: EL2 XR8 head upgrade

Posted: Fri Aug 29, 2014 8:30 am

Smokin em up

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Age: 44

Posts: 298

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Ride: NL Fairlane Ghia V8

Location: Geelong
VIC, Australia

From all reports the Deka's are top notch.

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xcabbi

Post subject: Re: EL2 XR8 head upgrade

Posted: Fri Aug 29, 2014 10:23 am

Getting Side Ways

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Location: Wollongong
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I'm running them in the FordRunner.

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Johnson stroker

Post subject: Re: EL2 XR8 head upgrade

Posted: Fri Aug 29, 2014 10:27 am

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{USERNAME} wrote:

I'm running them in the FordRunner.

Correction, you have them in the Fordrunner. Fordrunner is not yet running. Your input is invalid!! :mrgreen:

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Ef Nut

Post subject: Re: EL2 XR8 head upgrade

Posted: Thu Sep 04, 2014 10:51 am

Stock as a Rock

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Age: 32

Posts: 142

Joined: 25th Apr 2012

Gallery: 3 images

Ride: EL2 xr8

Location: Melbourne
VIC, Australia

Ok so I'm gonna do this right.

Looking to get AFR 165 heads:
http://m.ebay.com.au/itm/280641138707?nav=SEARCH

(Are these ok?)

What extractors, cam, springs, roller rockers do you suggest I get to go with it?
If possible looking to get about 300hp is that possible or am I dreaming?

I plan to get a second hand bottom end and getting it tidy so it can handle some power.
As my car is an auto would you suggest I get a high stall or diff ratio change??

I plan on doing this over a few years, collecting parts and then doing it all in one go, tune and all.

If anyone could make a brief list or post a link/ URL that would be awesome.

Thanks

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XR9UTE

Post subject: Re: EL2 XR8 head upgrade

Posted: Thu Sep 04, 2014 12:02 pm

EFI Guru

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Age: 59

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Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Depending whether you want to stay with bolt on rockers or go with studs look here....
http://www.airflowresearch.com/index.php?cPath=21_23
I'd go with stud mount personally.
Pacemakers will do the trick.
Stall speed depends almost entirely on the camshaft used.

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XR9UTE

Post subject: Re: EL2 XR8 head upgrade

Posted: Thu Sep 04, 2014 12:04 pm

EFI Guru

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Age: 59

Posts: 4359

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Through Summit....
http://www.summitracing.com/int/parts/a ... /overview/

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BOTTLEDUP

Post subject: Re: EL2 XR8 head upgrade

Posted: Fri Sep 05, 2014 1:09 pm

Getting Side Ways

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Age: 45

Posts: 662

Joined: 14th Jan 2007

Ride: T1 TE50 P01

Location: Perth NoR
WA, Australia

Power goal will be easier to achieve with a larger cylinder head, as an example in the states recently a stock bottom end 5.0L, Trickflow 190cc 11R cylinder heads, TFS-R intake and a small (218/224) camshaft went 348rwhp. Car drives like stock at lower rpms.

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TE50 T1 P01

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Ef Nut

Post subject: Re: EL2 XR8 head upgrade

Posted: Mon Sep 08, 2014 3:20 pm

Stock as a Rock

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Age: 32

Posts: 142

Joined: 25th Apr 2012

Gallery: 3 images

Ride: EL2 xr8

Location: Melbourne
VIC, Australia

AHHH, it's so hard to make a decision!!!

Went into my local ford wrecker and they have AU III XR8 being wrecked.
I enquired about the car and he said he will sell the (GT40P heads, springs, 1.7 YT rr) for $300.00
Just wondering if this setup would work with a 2031 cam on my EL XR8
(Will this run on stock ecu or need a tune?)
as I have read somewhere that the 220kw heads were ported slightly from factory..
(I'm looking to spend around $4000 installed)
-decent heads (eg AFR) are approx $1500-$2000

Obviously if I was to go ahead with this I would be getting a professional to install and tidy up the heads,

I'm open to other suggestions, as I said I'm a bit confused with what direction to go, I can't make up my mind.

Thanks

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BOTTLEDUP

Post subject: Re: EL2 XR8 head upgrade

Posted: Mon Sep 08, 2014 5:02 pm

Getting Side Ways

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Age: 45

Posts: 662

Joined: 14th Jan 2007

Ride: T1 TE50 P01

Location: Perth NoR
WA, Australia

The 220 heads had some very minor cleanup work around the valve bowls & chambers, larger valves fitted & were decked 0.030".

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TE50 T1 P01

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Ef Nut

Post subject: Re: EL2 XR8 head upgrade

Posted: Mon Sep 15, 2014 5:31 pm

Stock as a Rock

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Age: 32

Posts: 142

Joined: 25th Apr 2012

Gallery: 3 images

Ride: EL2 xr8

Location: Melbourne
VIC, Australia

Ok this is what I'm going for,
I don't want an over the top set up just a little more go..

Heads: (gt40p)
http://m.ebay.com.au/itm/290874013551?nav=SEARCH

Cam: (crane 2031)
http://m.ebay.com.au/itm/181524133795?nav=SEARCH

Roller Rockers: (Crane 1.7)
http://m.ebay.com.au/itm/181524271708?nav=SEARCH

Extractors: (pacemaker)
http://m.ebay.com.au/itm/151078880591?nav=SEARCH

How would this setup go? Will stock valve springs which come with the gt40p's be ok? If not what should I get??

I will be getting this professionally installed and tuned.

What are your opinions on this?

Cheers, thanks for the feed back so far..

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BOTTLEDUP

Post subject: Re: EL2 XR8 head upgrade

Posted: Mon Sep 15, 2014 7:11 pm

Getting Side Ways

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Age: 45

Posts: 662

Joined: 14th Jan 2007

Ride: T1 TE50 P01

Location: Perth NoR
WA, Australia

No to run the 2031 cam you will need to change springs & retainers. Something like this:
http://www.alexsparts.com/sb-ford-gt40p ... -580-lift/

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xcabbi

Post subject: Re: EL2 XR8 head upgrade

Posted: Mon Sep 15, 2014 10:44 pm

Getting Side Ways

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Age: 43

Posts: 9452

Joined: 9th Nov 2004

Gallery: 4 images

Ride: Fordrunner 5.0 Turbo

Location: Wollongong
NSW, Australia

Even with a stock cam and 1.7rr's you will get valve float at 5000rpm with the stock GT40P springs. Toss them in the bin the first chance you get. There are many options out there. I've got the crane drop in beehive spring set which is supposedly good for 0.550" lift.

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