Observed arrival · 2026-10-23
MockDyno, the engine-build calculator
A calculator for setting an engine power target, estimating parts, and working through gearing math.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People planning or comparing engine builds
- Worth noticing
- It explicitly excludes 0–60 and quarter-mile predictions, and labels parts totals as street-price estimates with ±20% uncertainty.
Field notes
Inputs include engine generation, fuel, induction, build character, displacement, altitude and air temperature; the page also exposes gearing arithmetic. Its stated power chain runs from airflow and fuel through Otto-cycle efficiency and friction, with boost calculations referencing turbo maps and intercooling. Parts totals are labeled street-price estimates with ±20% uncertainty, excluding labor, machine work and consumables; purchase links are described as searches, not endorsements.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue