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  #11  
Unread 23rd June 2014, 08:50 PM
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taza taza is offline
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Depends is yout gearbox dual range or single? If ite SH with 5mt dr then you can.
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  #12  
Unread 23rd June 2014, 09:18 PM
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I didnt know the SH came with a dual range. But yes, you're welcome to join in for any ADS products
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  #13  
Unread 24th June 2014, 12:32 AM
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Are you able to give us approximate prices for the 4.44 and 5th gear?
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  #14  
Unread 24th June 2014, 01:35 AM
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The 4.44 crown wheels are Subaru. New is ~$600 machined or 2nd hand machined is ~$400.

5th gear have several different ratios (0.738; 0.781; 0.825). Price is ~$280. According to Dedman's calculations, for an SF, you will need the .781 to keep the revs the same with 4.44 diffs or to drop the revs a bit more 0.738 (ADS said this ratio is very popular & would put the revs at ~2700rpm with the same sized tyres).

1st post edited
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Last edited by NachaLuva; 24th June 2014 at 01:53 AM.
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  #15  
Unread 24th June 2014, 04:59 AM
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If you run a standard SF box with 0.871 5th gear you will be doing around 3000rpm at 100km/hour

The listed gearing options will give the following rpm at 100km an hour with a 4.44 conversion from 4.11s

0.825 = 3072rpm
0.781 = 2908rpm
0.738 = 2748rpm

I personally think that if you are running a NA ej20 you will find the gap between 4th and 5th to large with the 0.738 ratio as a down shift from 5th at 2500rpm would be a jump to 3700ish in 4th.

On another note the 4.44 kit is a subaru part. and the listed 5th gear ratios are all standard subaru ratios indicating they are also standard Subaru parts so I wonder if it would be cheaper speaking to Subaru directly? Perhaps ASD get some kind of trade discount we can not get though.
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  #16  
Unread 24th June 2014, 06:49 AM
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Thanks dedman, that is very useful!

I think the 0.781 5th gear will be right for us with our SF. For those with an SG wanting to put in a 4.44 diff, they would need the 0.738 to keep the revs the same.

Yes, I think ADS will be getting some sort of trade discount from Subaru, but its worth investigating prices from Subaru direct. I might do that tomorrow.
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  #17  
Unread 24th June 2014, 12:42 PM
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And don't forget to change the gear ratio in the rear diff as well...
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  #18  
Unread 23rd August 2014, 08:10 AM
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Any more details on this?
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  #19  
Unread 23rd August 2014, 01:12 PM
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Im planning on a 1:1.447 with 1:4.44 final drive. What do ADS sell that would be beneficial to my build? Or convince me that I need 1:1.6 DR.
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  #20  
Unread 23rd August 2014, 01:51 PM
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ADS sell the 1.447 L/R gears which are in stock. The 4.44 ring gear still needs machining to fit. Norrie from ADS can give you the tolerances from my talks with him. I'm considering the 1.447 ratio myself.

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