Valve Train for Racing Engines

Get more horsepower with this valve train setup by Decuir engine technologies.

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Springless Valvetrain For Push Rod Engines!
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Big Engines Starting Up
This video features Big Engine Start Up compilation If you wanna see some biggest engine sin the world watch this video and if you like the video hit the like button. We do NOT own the video materials and all credits belong to respectful owners. In case of copyright issues, please contact us immediately for further credits or clip delete. DISCLAIMER: Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing." The materials are used for illustrative and exemplification reasons, also quoting in order to recombine elements to make a new work.

Visible V8 @ 7000 RPM Part 2 (failure)
This Visible V8 is tested over 7000 RPM for the first time. This is a new block. The cylinder heads are the same from the Visible V8 @ 5000 RPM 1-4 videos, with a new valve train geometry to correct a valve float problem above 5300 RPM. The rods, pistons and crankshaft are from the Visible V8 @ 5000 RPM 1-4 videos. In this test, the generator bracket came loose about 6000 RPM. The Crankshaft sheared off at the 3 and 4 rod journal. The 1 and 2 rod journal bent about 20 Degrees. Everything else is ok. This modified stock crankshaft had 15+ hours of running time before crankshaft failure @ 7151 RPM. The new electric drive motor is a Dayton 2M145 115 Volt 1/2 HP AC DC controlled with a Variac speed controller. Also look close and you will see smoke from the engine. This testing is really pushing the limits of this little Styrene plastic engine, but it has proven to be a real trooper and always comes back (so far) for more. This type of testing has allowed me to learn from each failure how to go faster than the last test. It is trial and error testing, with lots of error. The faster you go, the more problems you run in to. It has been interesting (and fun) to go from the stock 100 RPM to a modified 7000 RPM. @ 7000 RPM the pistons in this little engine are moving up and down 116.6 times per second. Keep in mind that this little plastic engine @ 7000 RPM is running 70 times faster than it was ever designed to run, way back in 1959. Note: A 1/4 inch Plexiglass Blast shield now used above 3500 RPM as it is very intense to be around above 4000 RPM, also because my home owners insurance does not cover exploding Visible V8 engines. 6000 RPM is the current self imposed redline. Above 6000 RPM, anything can happen, as shown here. Also with your mouse, hold down left click and run the little dot on the time line back and forth. You will be able to see the torque stress at several different RPM this little engine is under during the test. Testing continues.....