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Question on ST light double spring seats

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Old 03-15-2022, 08:15 PM
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Default Question on ST light double spring seats
For my verification before I take this BP4W head to the machine shop, It is correct to use the OEM valve spring seat in conjunction with the ST seats, right?

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Old 03-19-2022, 09:42 PM
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When I installed my springs on my bp4w head I did not use any of the OEM stuff I only used what ST supplied. YMMV
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Old 03-20-2022, 01:31 PM
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Seconded.
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Old 03-20-2022, 05:28 PM
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Thank you. I had read some conflicting info on the forums in my research. I called ST and the person I spoke with said to keep the OEM seats with the ST seats. I sent them an email and got a reply stating to use the ST seats only. I'll go with leaving out the OEMs.
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Old 03-20-2022, 07:48 PM
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I bought my ST springs from Supermiata/929 Racing. I called them and asked and was told use only the ST spacers, and do not use the stock ones.
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