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stock VVT head vs boost: valve spring limit

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Old 04-18-2018, 04:00 PM
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Default stock VVT head vs boost: valve spring limit
Google-fu must be weak today, cuz I can't find a simple answer.

How many lbs of boost should a 100% stock VVT head see before the valve springs need to be upgraded? Not sure this would factor into the equation, but 8.6:1 CR & 7K redline FWIW.
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Old 04-18-2018, 04:17 PM
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Codrus’ bp4w and patsmx5 bp6d are the two off the top of my head that ran into valve float fwiw
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Old 04-20-2018, 10:07 PM
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To add to the question, how much more is safe with volvo Springs?

😁
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Old 04-21-2018, 03:03 AM
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allofit
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Old 04-21-2018, 01:40 PM
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Originally Posted by 18psi
allofit
In b4 colipto revs to 10k.
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