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| ihudo |
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can you use a au alloy head on a ef block instead of the ef head
regards ihudo |
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| splosh123 |
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Age: 34 Posts: 168 Joined: 3rd Dec 2009 Ride: Falcon EL Option 20 Location: Redcliffe, Brisbane |
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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| ihudo |
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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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| splosh123 |
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Age: 34 Posts: 168 Joined: 3rd Dec 2009 Ride: Falcon EL Option 20 Location: Redcliffe, Brisbane |
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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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
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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| ihudo |
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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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| TROYMAN |
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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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| ihudo |
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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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| GeZza200 |
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Au head f**k the rest
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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