Terms of Use
WrenchMath provides calculators and reference information for informational purposes only. Nothing on this site constitutes professional mechanical, engineering, or safety advice.
Accuracy and inputs
Every formula is sourced and machine-verified, but results depend entirely on the inputs you provide. Garbage in, garbage out. If you enter the wrong fuel volume, the wrong sprocket count, or the wrong pressure reading, the calculator returns the wrong answer. It is your responsibility to double-check the inputs.
Engine tuning
Engine tuning changes, including jetting, fuel mix ratios, and compression modifications, must be independently verified before you rely on them. Running an engine lean can destroy it in minutes; the damage may be immediate and irreversible. This site provides directional guidance only, never a prescription. Always verify tuning changes with physical checks: plug reads, exhaust gas temperature, or bench testing before putting a machine under load.
No warranty
This site is provided as-is, without warranty of any kind. The author makes no representation that the information here is complete, current, or suitable for any particular use. Use of this site is at your own risk. Reference chart values displayed on calculator pages are computed from the same verified formulas at build time; they are not manually entered and are subject to the same input-dependency caveat as interactive results.
External links
Some pages link to external sources such as manufacturer manuals, standards documents, or reference sites. Those links are provided as attribution and for reader convenience; they are not an endorsement of the linked site or its contents.
Reporting errors
If you believe a formula or result is incorrect, please report it at contact@wrenchmath.com. Corrections are acted on promptly.