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au head 

 

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 Post subject: au head
Posted: Sat Aug 28, 2010 6:57 pm 
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Age: 64

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Ride: ef and ba

Location: pannawonica
WA, Australia

can you use a au alloy head on a ef block instead of the ef head
regards ihudo
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 Post subject: Re: au head
Posted: Sat Aug 28, 2010 7:09 pm 
Stock as a Rock
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Ride: Falcon EL Option 20

Location: Redcliffe, Brisbane
QLD, Australia

ihudo wrote:
can you use a au alloy head on a ef block instead of the ef head
regards ihudo

Yes you can, but all the heads are alloy, not just the AU. Use an AU headgasket while your there, bit stronger than the E series. Also get the non-VCT head.
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 Post subject: Re: au head
Posted: Sat Aug 28, 2010 7:17 pm 
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Ride: ef and ba

Location: pannawonica
WA, Australia

the only difference i can see is the au valve springs dont look as strong as the valve spring in my ef head that i destroyed by over heating
regards ihudo
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 Post subject: Re: au head
Posted: Sat Aug 28, 2010 7:32 pm 
Stock as a Rock
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Ride: Falcon EL Option 20

Location: Redcliffe, Brisbane
QLD, Australia

ihudo wrote:
the only difference i can see is the au valve springs dont look as strong as the valve spring in my ef head that i destroyed by over heating
regards ihudo

I'm not sure on the difference between the load ratings of springs between heads, if you want to be safe you can get yourself a set of tickford springs, but people haven't had any trouble with stock AU springs, unless your running a big cam.
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 Post subject: Re: au head
Posted: Sat Aug 28, 2010 8:00 pm 
Getting Side Ways
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ihudo wrote:
the only difference i can see is the au valve springs dont look as strong as the valve spring in my ef head that i destroyed by over heating
regards ihudo


The AU valve springs are a significant upgrade over the EF ones

 

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 Post subject: Re: au head
Posted: Sat Aug 28, 2010 9:14 pm 
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Age: 64

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Joined: 28th Aug 2010

Ride: ef and ba

Location: pannawonica
WA, Australia

the valve springs on the ef head i have look to be double springs and the cam has a lot more metal than the au cam . the ef i have is just a standard gli falcon
regards ihudo
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 Post subject: Re: au head
Posted: Sat Aug 28, 2010 10:32 pm 
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Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

ihudo wrote:
the valve springs on the ef head i have look to be double springs and the cam has a lot more metal than the au cam . the ef i have is just a standard gli falcon
regards ihudo


thats because au has a different rocker ratio, and the conical style valve springs in au are designed not to need the inner dampener spring that in the ef head,

but dont mix and match the cam and rockers as if you use the ef cam with au rockers you will destroy the valve train...

so imo if your using the au head, use the au cam and rockers..
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 Post subject: Re: au head
Posted: Sun Aug 29, 2010 1:11 am 
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Age: 64

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Ride: ef and ba

Location: pannawonica
WA, Australia

okay if i use the au head cam and rocker gear it will all run okay on a ef block.thank for all your help
regards ihudo
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 Post subject: Re: au head
Posted: Sun Aug 29, 2010 1:38 am 
Getting Side Ways
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Au head f**k the rest

 

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