Supertech Dual Valve Spring Kit for Mazda MX-5 NA NB 1.8
Supertech dual valve spring kits allow for more valve lift and higher rev limits. The extra seat pressure ensures the followers stay in contact with the camshaft lobes on even the most aggressive cam profiles. Each Supertech valve spring kit includes titanium retainers and valve spring seats to reduce reciprocating weight as much as possible.
Too little valve spring pressure can cause the valves to float. Valve loft is where the cam follower leaves the lobe as it rotates past maximum lift. Valve bounce occurs when the valve bounces off the seat. Too much valve spring pressure results in additional friction. Heat builds up in the valvetrain, increasing wear and reducing horsepower.
Features
- Type: Dual Spring
- Retainer: RET-TS60/MA2
- Spring : SPR-TS1015-MI
- Seat Locator : SEAT-TS/MA18I
Seat Pressure (lbs/mm @ mm) | Max Lift (mm) | Coil Bind (mm) | Rate (lbs/mm) |
---|---|---|---|
63 @ 34.20 | 14.20 | 20.00 | 9.60 |
74 @ 33.75 | 13.00 | 20.79 | 12.10 |
To be used with OEM keepers from year 1996+