Lifters
m (→GM hydraulic roller lifter: corrections) |
m (→Solid lifter) |
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| Line 41: | Line 41: | ||
Solid flat tappet lifters are still used in some high performance engines, solid roller valve trains are the choice for racing when allowed and street/strip engines used at high RPM. They are as durable as a hydraulic lifter in flat tappet form, but suffer the same wear problems due to the decrease of wear additives that have been removed from current motor oil. | Solid flat tappet lifters are still used in some high performance engines, solid roller valve trains are the choice for racing when allowed and street/strip engines used at high RPM. They are as durable as a hydraulic lifter in flat tappet form, but suffer the same wear problems due to the decrease of wear additives that have been removed from current motor oil. | ||
| − | Solid lifters are not used in modern engines because they make enough noise that they could confuse knock sensors. | + | Solid lifters are not used in modern engines because they make enough noise that they could confuse knock sensors, and the need for periodical maintenance is seen as too costly for the manufacturers to do under warranty. |
===Roller lifter=== | ===Roller lifter=== | ||
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