Valve spring preload

WARNING: This page is about a different car, the 2004 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Valve Spring Preload Specifications Chart

Courtesy of SUZUKI OF AMERICA CORP.

Spring squareness
Use a square and surface plate to check each spring for squareness in terms of clearance between end of valve spring and square. Valve springs found to exhibit a larger clearance than limit must be replaced.

Valve spring squareness limit

Inner spring: 1.6 mm (0.063 in.)

Outer spring: 1.8 mm (0.071 in.)

Fig 2: Checking Spring Squareness
Courtesy of SUZUKI OF AMERICA CORP.