Access Einstein Motors' professional engine performance calculators. Precision tools for flow optimization, combustion dynamics, and race tuning developed by industry experts to maximize your competitive advantage." Test out our new calculators Snap a photo of any port with a ruler laid flat beside it, tap two points to set scale, then tap inside the opening. The tool floods outward from your tap point and measures the actual cross-sectional area from the pixels themselves — no formula, no assumed shape. That means it works just as well on a straightforward rounded-rectangle port as it does on siamese, kidney, or any other irregular shape a spreadsheet can't touch. Built for a quick field reading against your calipers, not a replacement for them. Compares two valve seat angles side by side to show how much perpendicular seat gap each one opens at a given valve lift. Pick a lift (0.050" or 0.100"), set an angle for Seat A and Seat B, and it calculates the perpendicular gap for each using basic trig, then shows the percentage and absolute difference between them. Useful for quickly sanity-checking how a seat angle change (say, going from a 30° to a 58° seat) actually affects flow area at the seat before committing to a valve job. Enter cross-sectional area readings at 3, 4, or 5 zones along a port — stock and ported side by side — and it plots both profiles on the same graph so you can see exactly where and how much material came out. Automatically calculates MCSA (the choke point, i.e. the smallest reading) and average CSA for each side, then shows the percentage gain at both the minimum and the average between stock and ported. Switch between mm² and in² on the fly. Built to turn a set of port measurements into a clear before/after picture rather than a spreadsheet of raw numbers.

Access Einstein Motors' professional engine performance calculators. Precision tools for flow optimization, combustion dynamics, and race tuning developed by industry experts to maximize your competitive advantage." ENGINE CALCULATORS Transform your engine builds from guesswork to precision engineering. Our suite of professional-grade calculators puts decades of engineering expertise at your fingertips. Whether you're calculating basic displacement or diving deep into flow analysis, these tools help you make informed decisions at every step. Stop wondering 'what if' and start knowing exactly how your modifications will perform. From street builds to race engines, our calculators help you achieve maximum potential from your engine design. Bronze Calculators BRONZE CALCULATORS Silver Calculators SILVER CALCULATORS Gold Calculators GOLD CALCULATORS

Learn to apply Einstein Motors' airflow calculators in real engine building scenarios. From porting analysis to intake design - where airflow theory meets hands-on practice. Welcome to Practical Lessons Theory Meets Reality This is where we put our calculators to work. Here you'll learn how to use our airflow math tools in real engine building scenarios. We'll cover everything from porting and port analysis to intake design and airflow optimization. Each lesson shows you how to apply our calculators to solve actual problems and make better building decisions. More lessons coming regularly. Porting Fundamentals Finding What Needs Work Before you start grinding, you need to know exactly where your ports need attention. In this 45-minute lesson, we show you how to use calculations to identify restrictions and prioritize your work for maximum results. No more guessing – let the math guide your grinder. Part 1 is out now - Part 1 of our comprehensive porting series. WATCH NOW

Einstein Motors, is an educational podcast series that breaks down the science behind how engines work. From fluid dynamics to thermal efficiency, understand every element of internal combustion engines with our engine science explained lessons and advanced calculation tools. Einstein Motors Where we breakdown the science, so you don't have to! Building a global community of automotive engineering experts and enthusiasts. Together, we're creating a knowledge hub where members help each other grow, share insights, and advance automotive engineering excellence. Subscribe NOW and Stay Updated with our Latest Content Subscribe to get our weekly updates First name* Last name* Email* Join Our Mailing List GET YOUR MEMBERSHIP NOW BRONZE (FREE) Basic Calculators Sample Technical Content Weekly Beginners Tech Topic GET STARTED Basic Calculators Advanced Calculators Technical Documentation Weekly Technical Series SILVER $4.95 GET STARTED All Bronze and Sliver Advanced Calculators Flow Analysis Port Velocity Runner Length Torque Predictions VE Calculator and more Full Forum Access Full Tech Series Research Papers GOLD $5.95 GET STARTED

Discover Einstein Motors: race-proven engine development experts breaking down complex automotive science into practical tools. Learn how our engineering team translates advanced concepts into winning performance solutions." EINSTEIN MOTORS At Einstein Motors, we break down complex engine science into clear, understandable concepts. Our mission is to transform automotive knowledge from guesswork to precision engineering. Founded by enthusiasts who believe in understanding the 'why' behind every engine modification, we deliver in-depth technical content through educational podcasts, precision calculators, and detailed analysis tools. Our tiered membership structure provides access to increasingly advanced resources: Bronze members gain essential calculation tools and foundational knowledge Silver members unlock intermediate analysis and expanded technical content Gold members access our complete suite of professional-grade calculators and advanced engineering resources From street builds to race engines, we help you make informed decisions based on real science. Stop wondering 'what if' and start knowing exactly how your modifications will perform. Join our growing community of automotive enthusiasts who are elevating their understanding from basic mechanics to comprehensive engine science. At Einstein Motors, we break down the science, so you don't have to. HOME

Engine Principles Engine Principles Engine Principles Internal Combustion Engine Fundamentals Core thermodynamics, BMEP, volumetric efficiency, John Heywood READ Internal Combustion Engine In Theory Volume 1, Thermodynamic, fluid flow performance, Charles Taylor READ

Connect with Einstein Motors' engineering experts for personalized performance solutions. Get direct assistance with engine development, airflow optimization, and race tuning challenges." Contact Us Have questions about engine science or our educational content? We value your input and aim to help you better understand the technical aspects of internal combustion engines. While we read every message, please note that due to high volume, we prioritize responses to active members. For technical support, please include your membership level and any relevant calculator or resource questions. First Name Last Name Email Message Send Thanks for submitting!