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Molloy
Fordmods - Getting Side Ways
Age:22
Posts: 3622
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Location: Taree NSW, Australia
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 Posted: Sun May 11, 2008 5:52 pm Post subject: E-series head flow rates |
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Hey guys, Which head flows better EB 4ltr ED or EF I heard it was the ED headcast mark 91AA? is this correct?
cheers Molloy |
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tickford_6
Fordmods - Getting Side Ways
Age:25
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Location: townsville QLD, Australia
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| Posted: Sun May 11, 2008 5:56 pm Post subject: Re: E-series head flow rates |
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| Molloy wrote: | Hey guys, Which head flows better EB 4ltr ED or EF I heard it was the ED headcast mark 91AA? is this correct?
cheers Molloy |
you'll find some of the early heads have a higher flow rate, but they have much larger ports.
outright flow is not all you need, |
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gogetta
Fordmods - Getting Side Ways
Posts: 2086
Joined: 27 Dec 2004
Location: melbourne, sunshine VIC, Australia
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| Posted: Sun May 11, 2008 6:07 pm Post subject: |
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i have found that the EF seems to have the most balls off the mark compared to EL and AUs which seem more sluggish to me...I have never driven an EL that impressed me as much as EF
from looking at the ports the AU is defintely better but not when u drive it.... |
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serialfool
Fordmods Oompa Loompa
Posts: 21
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Location: Penola SA, Australia
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| Posted: Sun May 11, 2008 6:48 pm Post subject: |
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Jim Mock did a interview with a car site about the flow rates of all of the 3.9/4.0 engines from EA to AU and their capabilities stock and modded.
They came to the conclusion that the EF head flowed best from stock but the AU was the best for mods. |
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Molloy
Fordmods - Getting Side Ways
Age:22
Posts: 3622
Joined: 04 Mar 2005
Location: Taree NSW, Australia
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| Posted: Mon May 12, 2008 7:27 am Post subject: |
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| serialfool wrote: | Jim Mock did a interview with a car site about the flow rates of all of the 3.9/4.0 engines from EA to AU and their capabilities stock and modded.
They came to the conclusion that the EF head flowed best from stock but the AU was the best for mods. |
would u have a link to that? |
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AU99
Fordmods - Getting Side Ways
Age:55
Posts: 461
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| Posted: Mon May 12, 2008 10:38 am Post subject: |
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| autospeed was the site if I remember right |
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Steady ED
Fordmods Addict
Age:22
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Location: Melbourne VIC, Australia
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| Posted: Mon May 12, 2008 10:54 am Post subject: |
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| Yeah was autospeed, the 'highest flowing' is said to be 94AB casting. |
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turbotrana
Fordmods - Smokin em up
Posts: 208
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Location: Perth WA, Australia
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| Posted: Tue May 13, 2008 2:42 am Post subject: |
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I dont think there is much difference between the 91AA or 94AB. Use what ever you have and spend some time narrowing down the valve guides, blending the valve seats, straightening the exhaust a little, laying back the short side radius on Inlet and Exhaust, a proper 3 angle valve job and opening up the combustion chamber on the opposite side to the spark plug.
Read that autospeed article and it should help a bit to understand what needs to be done. Although thats a AU head, most of it still applies to E series heads. |
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raff-26
Fordmods Tyre Shredder
Age:26
Posts: 376
Joined: 05 Aug 2007
Location: melbourne VIC, Australia
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| Posted: Tue May 13, 2008 1:04 pm Post subject: |
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| I've got a 94 ab cast in the EB2 wagon, it does go noticeably nicer then my sedan EB2 (91AB) but then again....the T5 in the wagon may have something to do with that *lol* |
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