Top 10 Engine Forums in 2025

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The best Engine forums, communities, discussion and message boards curated from thousands of forums on the web and ranked by popularity, active threads, and member count.

Engine Forums

Here are 10 Best Engine Forums you should follow in 2025. Subscribe in one place on FeedSpot Reader.

1. Reddit » Engine Building

Forum https://www.reddit.com/r/EngineBuilding/ + Follow
Engine Building and Swaps - V8 and all the rest
Facebook Followers 1.9M View Recent Threads

2. Home Model Engine Machinist Forum

Forum https://www.homemodelenginemachinist.com/ + Follow
A worldwide hobby community dedicated to machinist-built model engines. Discussions contain topics on model engine making and engine plans, castings, CAD, CNC designs, lathe, Stirling, boilers & steam.MORE Facebook Followers 3KTwitter Followers 18 View Recent Threads

3. Car Talk Community - Power/Fuel

Forum https://community.cartalk.com/c/power-fuel/16 + Follow
Topics in the 'Power/Fuel' category Talk about all your automotive energy questions.
Facebook Followers 504.9KTwitter Followers 42.4K View Recent Threads

4. Bimmerforums - Engine Tuning

Forum https://www.bimmerforums.com/forum/forumdispl.. + Follow
The Engine Management & Tuning forum is for discussion about Standalone & Piggyback ECU's, Datalogging Software, and Tuning. Bimmerforums is the preferred online BMW Forum and community for BMW owners.MORE Facebook Followers 2.5KTwitter Followers 1.2K View Recent Threads

5. Automotive Forums - Engineering/Technical

Forum https://www.automotiveforums.com/vbulletin/fo.. + Follow
Ask technical questions about cars. Do you know how a car engine works? Automotive Forums .com is one of the largest automotive communities online. Discuss any automotive topic with thousands of other auto enthusiastsMORE Facebook Followers 1.8KTwitter Followers 135 View Recent Threads

6. Everything2Stroke Forum

Forum https://www.everything2stroke.com/ + Follow
A forum community dedicated to all 2 stroke engine vehicle owners and enthusiasts. Come join the discussion about your favorite engine's performance, classifieds, troubleshooting, maintenance, and more!MORE Facebook Followers 850 View Recent Threads

7. 2-Stroke Engines

Forum https://motoredbikes.com/forums/2-stroke-engi.. + Follow
The 2-Stroke motorized bicycle engine kit forum. Why won't your 2-stroke motorized bike engine start? What's the best 66cc & 80cc engine kit for your bike?
View Recent Threads

8. Downeast Boat Forum - Used Marine Engines

Forum https://downeastboatforum.com/forums/used-mar.. + Follow
Discussion about Engines, Outboards, Gears, Panels, Exhaust Components, Wiring Harnesses, Turbos, Alternators, Intercoolers, Racors, and anything engine-related.
View Recent Threads

9. RCU Forums - RC Car Engines

Forum https://www.rcuniverse.com/forum/rc-car-engin.. + Follow
Talk about rc car nitro engines and gas engines
Facebook Followers 8KTwitter Followers 3.2K View Recent Threads

10. Car Forum - Repairs & Maintenance

Forum https://www.carforums.com/forums/forum/178-repairs-amp-maintenance/ + Follow
If you have general car repair or maintenance questions this is the right forum to post them!
View Recent Threads