- Description
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Details
High-performance valve spring kit for Norton
Fits:
- All years 750cc and 850cc Commando
Features
- High quality construction by Kibblewhite
- Alloy collars
- Super lightweight
- Chrome silicon springs
- High temperature keepers
- High temperature base-washers
Specifications:
- Installed height 1.415"-1.425"
- Seat pressure 105#
- Open pressure 185#
- Max valve lift 0.500"
Notes:
- This kit can be installed to accept 0.50 valve travel at a recommended installed height of 1.300" which will product a seat pressure of 140# and an open pressure of 265# (intended for full race applications).
- The difference between installed height and coil bind height is considered "free travel."
- The coil bind height is determined by compressing the spring or springs with the retainer and base-washer in place. A vice can be used for this operation, once springs are compressed, measure the distance between the retainer and the base-washer where the outer spring contacts them.
- Free-travel should always be gross valve lift+.060 for safe operation
- Retainer-to-seal and retainer-to-guide clearance should also be gross valve lift +.060 for safe operation
- Failure to check valve train clearances can result in serious damage to an engine.
Additional Information
SKU PM4060 Manufacture Kibblewhite - Additional Information
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Additional Information
SKU PM4060 Manufacture Kibblewhite - Reviews
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General : 727.381.1151 Toll Free : 1.800.875.BRIT(2748)
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1-800-875-BRIT (2748)
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