Secure Tillotson Top Cap Screw for Carburetor Assembly
$1.18 USD
Sale price
$1.18 USD
Regular price
- Threaded for strong, reusable hold
- Corrosion-proof for wet or dusty environments
- Supports stable metering arm operation
This simple fastener organizes your carb's top end, ensuring vibrations don't translate to performance dips, so you can push limits without worry.
Frequently Asked Questions
Q: Why is it important to use a specific Tillotson top cap screw instead of a generic hardware store bolt?
A: Tillotson carburetors are subject to intense high-frequency vibrations on the track. This screw is engineered to maintain consistent clamping force, preventing the top cap from loosening, which could otherwise lead to air leaks, jet misalignment, and inconsistent engine performance.
Q: How tight should I torque the top cap screw during installation?
A: You should tighten the screw until it is snug and the top cap is fully seated against the carburetor body. Avoid over-tightening, as this can strip the threads in the carburetor housing or crack the top cap. A firm, hand-tight fit is usually sufficient for these components.
Q: Should I use thread locker on this screw?
A: While the screw is designed for a secure hold, many racers choose to use a small drop of blue (medium strength) thread locker to ensure the screw does not back out due to extreme engine vibration. Avoid red (permanent) thread locker, as it will make future carburetor maintenance difficult.
Q: How often should I replace my carburetor hardware?
A: It is good practice to inspect your carburetor hardware during every rebuild or if you notice the screw head showing signs of wear or rounding. If the threads appear damaged or the screw no longer holds tension, replace it immediately to prevent mid-race failures.