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-   -   stock VVT head vs boost: valve spring limit (https://www.miataturbo.net/engine-performance-56/stock-vvt-head-vs-boost-valve-spring-limit-96727/)

wackbards 04-18-2018 04:00 PM
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.

18psi 04-18-2018 04:17 PM
Codrus’ bp4w and patsmx5 bp6d are the two off the top of my head that ran into valve float fwiw

ridethecliche 04-20-2018 10:07 PM
To add to the question, how much more is safe with volvo Springs?

😁

18psi 04-21-2018 03:03 AM
allofit

ridethecliche 04-21-2018 01:40 PM
Originally Posted by 18psi (Post 1478389)
allofit
In b4 colipto revs to 10k.


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