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3.9 eb mods 

 

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 Post subject: 3.9 eb mods
Posted: Tue Jul 14, 2009 10:01 pm 
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Age: 60

Posts: 7

Joined: 10th Jul 2009

Ride: eb falcon

Location: dandenong
VIC, Australia

Hi
I have a 3.9 eb on gas and I have a couple of questions
What is the best head to use on a 3.9 is there any advantage in using a later head
Will an eb, ie steel, sump fit an au motor
Are eb xr6 brakes different, can I upgrade brakes to xr6
Can I fit au2 brakes
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 Post subject: Re: 3.9 eb mods
Posted: Wed Jul 15, 2009 2:08 pm 
Getting Side Ways
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Age: 49

Posts: 6467

Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

tommysan wrote:
Hi
I have a 3.9 eb on gas and I have a couple of questions
What is the best head to use on a 3.9 is there any advantage in using a later head
Will an eb, ie steel, sump fit an au motor
Are eb xr6 brakes different, can I upgrade brakes to xr6
Can I fit au2 brakes


You didn't mention if it was CFI or MPFI.
XR6 brakes are the same.
AUII brakes won't fit on those EA to EL stub axles.
The AU engine was designed to have the alloy sump, as the sump is also bolted to the main caps, so fitting a tin sump is defeating the purpose of having an AU donk.

 

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 Post subject: Re: 3.9 eb mods
Posted: Wed Jul 15, 2009 8:28 pm 
Fordmods Newbie
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Age: 60

Posts: 7

Joined: 10th Jul 2009

Ride: eb falcon

Location: dandenong
VIC, Australia

Thanks for the reply
It is a multipoint injection
Can I fit au stub axles, frount end , to get the bigger brakes
Neat trick with the alloy sump, I have never seen that done before
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 Post subject: Re: 3.9 eb mods
Posted: Thu Jul 16, 2009 1:46 am 
Getting Side Ways
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User avatar

Age: 49

Posts: 6467

Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

tommysan wrote:
Thanks for the reply
It is a multipoint injection
Can I fit au stub axles, frount end , to get the bigger brakes
Neat trick with the alloy sump, I have never seen that done before


No, you can't fit the AU stub axles to the EB.....the b/joints are in the arms,...... EA to EL, the b/joints are on the stub axles.
You can fit a 91DA inlet manifold in stead of the 87DA you have now.....the inside of the runners are slightly bigger.
The LPG gas mixer ( sits near the throttle body ) has a small hole....about 2" or so in diameter...versuses the throttle body diameter.......the mixer doesn't let enough air through.
My belief with LPG is that it's straight LPG, and built & tuned for it, or it's straight petrol....no mixing the 2.........two different fuels with 2 different requirements.

 

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