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AP2 valve springs and retainers

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Old Jan 28, 2008 | 06:53 PM
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Default AP2 valve springs and retainers

I've done some search and come to see that AP1 needs to be upgraded but heard nothing much about the AP2. I'm turboing and just wondering if I gotta upgrade this anyway. If so, what brand should I go for?
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Old Jan 29, 2008 | 10:35 AM
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im gonna do supertech real soon, doesnt really help u
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Old Jan 29, 2008 | 12:40 PM
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searching has led you to believe that springs and retainers must be upgraded in order to turbo an AP1?
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Old Jan 29, 2008 | 12:44 PM
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I have AP2 retainers on my SC AP1, no problems. Ti retainers have to be inspected and replaced more often, PITA if you ask me.
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Old Jan 29, 2008 | 01:47 PM
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Originally Posted by cash84,Jan 28 2008, 10:53 PM
I've done some search and come to see that AP1 needs to be upgraded but heard nothing much about the AP2. I'm turboing and just wondering if I gotta upgrade this anyway. If so, what brand should I go for?
i would only upgrade retainers if you have found your ap1's to have sunk, which means they have cracked... especially if you have had an over-rev! I wouldn't upgrade them if you haven't though!
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Old Jan 29, 2008 | 03:48 PM
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Okay I decided to keep the AP2 retainers and ordered a set of Skunk2 dual valve springs.
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Old Jan 29, 2008 | 06:01 PM
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Originally Posted by goldenfri,Jan 29 2008, 04:44 PM
I have AP2 retainers on my SC AP1, no problems. Ti retainers have to be inspected and replaced more often, PITA if you ask me.
According to some vendors that build heads (alainz / Laskey), they say thats a myth. Im not sure if its a sales ploy or not.
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Old Jan 29, 2008 | 07:46 PM
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Originally Posted by duff0000,Jan 29 2008, 10:01 PM
According to some vendors that build heads (alainz / Laskey), they say thats a myth. Im not sure if its a sales ploy or not.
im pretty sure sideways pulled his ti valvetrain at 10k miles and there was considerable galling...
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