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AU 5.0L underdrive pulley kit ? 

 

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 Post subject: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 3:07 pm 
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Hey Fella's first of all is a underdrive kit a worthwhile investment.. 2nd I can't seem to find any for the au's, I have seen some on the U.S ebay site for the 5.0L mustangs with the serpentine belts from around 1993 to 1998 would these be the same for the au's, would appreciate it if anyone who can share some knowledge, thanks

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 3:09 pm 
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BPT do underdrives (same for AU as for E series) but it is MUCH cheaper to buy from evilbay or the likes. Only downside is you have to get the waterpump drilled out to suit the Aussie waterpump. But still, it's much cheaper than buying a pre drilled set.

A very worthwhile mod too!

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 3:26 pm 
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OK thanks, are they the same as the 5L mustangs

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 3:48 pm 
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gotta luv a v8 wrote:
OK thanks, are they the same as the 5L mustangs


You need to get the 94-95 v8 mustang set.

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 3:51 pm 
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there is no underdrive pulley for an AU. E series stuff will not work.

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 4:20 pm 
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67RCE wrote:
there is no underdrive pulley for an AU. E series stuff will not work.


Will it not, Why is that? I thought the crank pulley and alt pulley was the same? Is the WP different?

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 4:29 pm 
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Crank pulley has the ignition pickup mounted on it. It's integrated into the balancer.

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 7:12 pm 
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Thanks, that explains why I can't find one :(

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 8:33 pm 
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AU's are already factory under-driven - the crank pulley is a full inch smaller in diameter than E-series. And there are no kits available to slow the accessories any further afaik. The benefits of further slowing the accessories would be marginal and possibly detrimental to steering assist at parking speeds and charging at criuse with high current demand.

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Mon Jun 06, 2011 10:06 pm 
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Ok thanks appreciate the info.

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Sun Jun 12, 2011 1:42 pm 
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what 67RCE + xafalcon said :D

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Wed Jun 29, 2011 10:54 pm 
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xafalcon wrote:
AU's are already factory under-driven - the crank pulley is a full inch smaller in diameter than E-series. And there are no kits available to slow the accessories any further afaik. The benefits of further slowing the accessories would be marginal and possibly detrimental to steering assist at parking speeds and charging at criuse with high current demand.



I agree with above. Currently I am rebuild a 5 lt Windsor with Trickflow top end Kit. Mechanic suggested I go with under pulley system.

After a lot of research, my conclusion was, not needed, not recommended.

 

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 Post subject: Re: AU 5.0L underdrive pulley kit ?
Posted: Wed Jun 29, 2011 10:57 pm 
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xafalcon wrote:
AU's are already factory under-driven - the crank pulley is a full inch smaller in diameter than E-series. And there are no kits available to slow the accessories any further afaik. The benefits of further slowing the accessories would be marginal and possibly detrimental to steering assist at parking speeds and charging at criuse with high current demand.



I agree with above. Currently I am rebuild a 5 lt Windsor with Trickflow top end Kit. Mechanic suggested I go with under pulley system.

After a lot of research, my conclusion was, not needed, not recommended.

 

 

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AU Ute ~ R350
347 ~ fordstroker(10:2.1) / TFS 190 heads / TFS R series 90 manifold / FTI custom cam / Accufab 85mm Race TB / Lightening 90mm MAF/ Bosch 36lb inject / MSD coil + leads / Comp Pacemakers + 3" exhaust / BA XR8 Premium brake pac /3.45 gears./ Pedders Xtreme coil overs / QH Tune

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