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Supertech Miata valve spring kit 94-05 BP 1.8
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SPRK-
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Detailed Description

Supertech valve spring kit
94-05 Miata 1.8 91-96 Ford Escort GT 1.8 323, 323GT 323GTX 323GTR Familia
Three kit options depending on usage. The below are estimates only and will vary greatly depending on valve weight, cam lift, and other variables.
Single spring - seat pressure 56lbs @ 34.2mm Sustained revs to 7400rpm, mechanical over rev to 7800. N/A only
Light double spring - seat pressure 63lbs @ 34.2mm Sustained revs to 7800rpm, mechanical over rev to 8200. < 8psi boost
Heavy double spring - seat pressure 74lbs @ 34.2mm Sustained revs to 8500pm, mechanical over rev to 9000. > 8psi boost
Kit includes
- 16 or 32 springs
- 16 Titanium retainers RET-TS60/MA2
- 16 spring seats, steel SEAT-TS/MA18I
If installing in a BP05 head 94-97 Miata, you'll also need 32 OEM 99-05 retainers, Mazda # FS01-12-114
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