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3.9L/4.0L Inline 6 Modification Guide 

 

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Posted: Sun Jan 27, 2008 12:56 pm 
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Yeah I think you'd be better off dropping in a complete motor rather than just a 4L head.

There's quite a few threads around about motor conversions if you wanna do a search.

AU motor on eBay: http://cgi.ebay.com.au/AU-FORD-FALCON-M ... dZViewItem

I did the conversion when I had my EB, I would highly recommend it.

 

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Posted: Sun Jan 27, 2008 1:23 pm 
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Ride: '90 ea 3.9L

Location: Gunnedah
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cheers mate!! sounds like the way to go, also i have another ea wagon with a 5 spd can u tell me whether that would go up behind an au engine? its just that at the moment im currently at tafe an i dont have $$$ to spend but want to squeeze as much as into my ea as possible hense a manual a few more horsies an wat no anyways thanks again :)
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Posted: Sun Jan 27, 2008 1:25 pm 
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Yeah it's all the same gear.

 

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Posted: Sun Jan 27, 2008 1:29 pm 
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Ride: '90 ea 3.9L

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awesome awesome thanks for the info i appreciate it!! your a real champ!
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Posted: Sun Jan 27, 2008 2:07 pm 
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depending how much you can get a engine for.
i got mine for $700 no manifold or accesories with 77000 kms.

it depends on how far you want to go?

the cheapest way is to replace the engine and use your manifold and accesories.

if you want to upgrade the manifold and ecu to el aswell. all up it could cost anything up to $2000

this might help.
http://www.fordmods.com/forums/documents.php?doc=85
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Posted: Wed Jan 30, 2008 9:07 pm 
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i got my au motor for 175 from a wrecker in 'none running' condition..

however i got lucky..as when i started to pull the thing apart(its getting a full rebuild) it was clear the engine was VERY new..the head place that was porting it said it was of a brand new motor..bearings were hardly worn, and the cylinders still had the hatching on them..

but i agree, if you head gasket or motor blows on your ea-el, id be buying on of those ready to go au motors for 700+freight.
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Posted: Wed Jan 30, 2008 9:15 pm 
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Ride: '90 ea 3.9L

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NSW, Australia

well guys as much as id love to throw an AU engine in my ea i dont think i have the money time tools or skills to switch an move stuff around my engine bay i have spoken to a bloke from a wreckers an have decided to go with an el engine its simple and easy and i can use my old parts. correct me if im wrong but wat i got told today that "fitting into a ea-d you require a lot more,you have to run au power steer pump.a/c compressor belt tensioner & belt,modify a/c lines,fit your dissy,either run au inlet manifold using your wiring harness & computer air intake & box or use ea-d intake manifold and make a bracket to bolt to block lowering the compressor (if using au a/c intake & bracket you will have to cutt a section away for dissy adjustment) you will also have to run au fans ,make a pipe reducer from bottom rad hose to waterpump.if your car is a cpi you will have to run your intake manifold." is this correct? and a simple question wats the difference between a standard 6 and an xr6?
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Posted: Wed Jan 30, 2008 9:17 pm 
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Ride: '90 ea 3.9L

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and wats this about if you install a pod filter to your strait 6 you could lose power? does anyone know wat my chances are of putting the intake outside the engine bay up behind the front bar and infront o the L/H side wheel??
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Posted: Thu Jan 31, 2008 9:49 am 
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{USERNAME} wrote:
well guys as much as id love to throw an AU engine in my ea i dont think i have the money time tools or skills to switch an move stuff around my engine bay i have spoken to a bloke from a wreckers an have decided to go with an el engine its simple and easy and i can use my old parts. correct me if im wrong but wat i got told today that "fitting into a ea-d you require a lot more,you have to run au power steer pump.a/c compressor belt tensioner & belt,modify a/c lines,fit your dissy,either run au inlet manifold using your wiring harness & computer air intake & box or use ea-d intake manifold and make a bracket to bolt to block lowering the compressor (if using au a/c intake & bracket you will have to cutt a section away for dissy adjustment) you will also have to run au fans ,make a pipe reducer from bottom rad hose to waterpump.if your car is a cpi you will have to run your intake manifold." is this correct? and a simple question wats the difference between a standard 6 and an xr6?


thats way over the top..
who ever told you that is on drugs.lol
you can fit all accesories from ea to el with no problems..
to fit au the only thing thats different is the mounting part of the alternator
and the front of the sump. you can fit a dizzy straight into the block on all engines from ea to au with no mods .
if you fit a au engine use all the accesories from el inc power steering pump,water pump,(alternator but need to modify),aircon pump but you will need to change your air con lines if you have a ea..as the pumps are different..
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Posted: Thu Jan 31, 2008 11:33 am 
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hahahaha yea i thawt that after reading your comment 4 days ago on how u did yours. i had a look at the link on how to install the au engine so by the time i get to getting the engine i will have cert 1 in engineering so i should be able to handle it. do you no about pod filters? ive heard people say that you could a loss in power?? i got the idea off a mate of putting it out side the engine bay infront off the front wheel would it work or is a waste of time?
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Posted: Thu Jan 31, 2008 2:32 pm 
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it would work well except for when it rains lol.your pod will get wet
i got a pod mounted inside the air box with the xr snorkle but ive cut 2 x 2" holes under my air box with 2 x 2" flex hoses going to a upside down cut au snorkle at the bottom of the front bumper..
and it works good.

 

 

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Posted: Thu Jan 31, 2008 2:53 pm 
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Ride: '90 ea 3.9L

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yea that was one of the problems plus dirt and mud! but thats the beaut idea mate i would never have thawt of that cheers for that info it looks like they way ill go with mine :)
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 Post subject: The 3.9L/4.0L Inline 6 Modification Guide
Posted: Mon Feb 25, 2008 9:35 pm 
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Location: wycheproof
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Thank you Voxace .

I just joined this site to get some ideas on how upgrade my NA Fairlane performance wise and I stumbled across your guide. Man....have you saved me some research thanks so much your efforts are greatly appreciated by me. Now I have a step by step work schedule for the old girl although I am on a tight budget at least I can do things bit by bit.

THANKS AGAIN (buy ya a beer if we ever meet)

 

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Posted: Sun Mar 09, 2008 4:35 pm 
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Location: melbourne
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this site made my day this post made my car im not leavin this site now i wish i would have found it earlier please keep up the good work so all us noob's learn thanks heaps guys
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Posted: Sun Oct 19, 2008 12:26 am 
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Joined: 18th Oct 2008

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Location: Macquarie Hills
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Hey, im new to this website and i currently own a falcon au with a 2.5" cat back exhaust n im looking for further mods, any ideas would be great, thanks guys!

Also i live in the newcastle area, so any places to get the stuff cheap around here would be good! cheers!
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