Valve spring tech
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Measure the length of the two-ring wire with your caliper or 0-2" micrometer. Subtract theoretical valve lift. Cut the wire to this new length. Place the inner spring in the vise (no shims). Holding the two-ring wire parallel with the spring, compress the spring down to the length of the wire and repeat with feeler gauge. If it clears at all 5 positions, good to go with the inner spring. | Measure the length of the two-ring wire with your caliper or 0-2" micrometer. Subtract theoretical valve lift. Cut the wire to this new length. Place the inner spring in the vise (no shims). Holding the two-ring wire parallel with the spring, compress the spring down to the length of the wire and repeat with feeler gauge. If it clears at all 5 positions, good to go with the inner spring. | ||
| − | Disassemble the retainer/keepers. Install the correct shim thickness you will use. Reassemble retainer/keepers. Holding the one-ring wire with pliers on the spring shim/shims at the outer step, open the valve until the retainer outer step contacts the wire. This will place the retainer at the full valve lift position. Verify 1/16" to 1/8" clearance between the valve guide and the bottom of the retainer. If seals are installed, good to go. If seals are not installed yet, allow for their height above the guide | + | Disassemble the retainer/keepers. Install the correct shim thickness you will use. Reassemble retainer/keepers. Holding the one-ring wire with pliers on the spring shim/shims at the outer step, open the valve until the retainer outer step contacts the wire. This will place the retainer at the full valve lift position. Verify 1/16" to 1/8" clearance between the valve guide and the bottom of the retainer. If seals are installed, good to go. If seals are not installed yet, allow for their height above the guide. |
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| + | If the clearance is insufficient, different retainers or keepers can be used to correct it or you can cut the spring sockets deeper in the heads. | ||
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