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Old 27-04-2007, 01:08 PM
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andre_k
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Default actuator question
how can i tell if my s2 is fitted with a -31 actuater, whats the differance between that and a standard one?
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Old 27-04-2007, 01:09 PM
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Charlie Chalk
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on the top surface, there will be some digits, the last ones will be -31
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Old 27-04-2007, 01:10 PM
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im usre the genuine garret actuators have -31 stamped in them at the back

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Old 27-04-2007, 01:22 PM
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tabetha
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As said just written on front.
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Old 27-04-2007, 02:56 PM
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The difference between the standard -18 (on a Cossie anyway) and a -31 is that the -31 has a stronger spring, which holds the wastegate shut longer, reducing the time it takes the turbo to spool up
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Old 27-04-2007, 04:25 PM
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tabetha
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It does not affect spool up at all, it merely holds the wastegate shut against MORE pressure so it can provide more, but the spool is not affected as pumping remains the same.
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Old 29-04-2007, 05:06 PM
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its just im getting a chip on my s2 on weds and i was wondering if my actuater is a -31


it is needed for 14 or so psi on a s2 isnt it?

i will take a pic shortly
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Old 29-04-2007, 05:45 PM
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14psi will need -31, printed on the last numbers on the front ie *****-31.
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Old 29-04-2007, 05:51 PM
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cant see any numbers ...





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Old 29-04-2007, 07:09 PM
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tabetha
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Wind it up if it wil not hold 14 either it is knackered or you need a -31 so either way you need one!!
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