HONDA V-Tec Operation
HONDA V-Tec Operation
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Describes the operation of the HONDA V-Tec variable valve timing system.
Like never seen before, this animation goes into details on the mechanical
principle of the V-Tec system. The Honda V-Tec system is a dual setting
variable valve timing system. It is meant to give high efficiency and low
power at lower RPM and high power and low efficiency at higher RPMs. There
have been a few incarnations of V-Tec, which came out in the late 80's, but
their principle is the same. See it all here with high quality visual
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What is VTEC and How Does it Work? - EricTheCarGuy
VTEC or Valve Timing Electronic Control is a system that's been used by
Honda in passenger cars since 1991. I believe the 1991 NSX was the first
production vehicle to get this system. It has since been used in several
other Honda vehicles. Late model VTEC equipped vehicles use the iVTEC
system which also changes cam timing as well as lift and duration. The
system is designed to give you the 'best of both worlds'. You get to switch
between 2 cam profiles. One for fuel economy, one for performance. A lot of
people think that when VTEC kicks in you get an extra Boost of power. Not true in my experience. It
does however extend the torque curve to give you more performance after it
does switch over. There is no set RPM where VTEC switches. The computer
looks at several variables and calculates when to activate the VTEC
solenoid. It's a cool system and for the most part rarely has issues. The
most common issues I've seen with VTEC are the result of low, or incorrect
oil viscosity. So if you have a VTEC engine, keep the oil topped off and
make sure you use the viscosity listed on the oil cap. The animations are
courtesy Honda Motor Company, thanks guys.
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Rolls-Royce Merlin Engine
Considered a British icon, the Merlin was one of the most successful
aircraft engines of the World War II era, and many variants were built by
Rolls-Royce in Derby, Crewe and Glasgow,as well as by Ford of Britain at
their Trafford Park factory, near Manchester. The Packard V-1650 was a
version of the Merlin built in the United States. Production ceased in 1950
after a total of almost 150,000 engines had been delivered, the later
variants being used for airliners and military transport aircraft.
The PV-12 first ran in 1933 and, after several modifications, the first
production variants were built in 1936. The first operational aircraft to
enter service using the Merlin were the Fairey Battle, Hawker Hurricane and
Supermarine Spitfire. More Merlins were made for the four-engined Avro
Lancaster heavy bomber than for any other aircraft; however, the engine is
most closely associated with the Spitfire, starting with the Spitfire's
maiden flight in 1936. A series of rapidly applied developments, brought
about by wartime needs, markedly improved the engine's performance and
Many ascribe the victory during the Battle of Britain to the Merlin powered
Royal Air Force (RAF). And later its use in the American P-51 Mustang.
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Ferrari V12 Engine
Ferrari V12 Engine Assembly. From start to finish, one technician is
responsible for the assembly........
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MARS 5HP DIESEL ENGINE - 1st Start Up in 50 Years!
Watch as an early 1940's MARS Diesel engine is fired up after 50 years.
Originally acquired from a cane farmer in Nambour, Queensland, Australia in
the 1970's, this engine sat in careful custody with another three owners
before finally retiring with me.
MARS engines were made by the MARS Machine Tool Manufacturing Company in
Brisbane, Australia and were preceded by the horizontal and vertical Rapson
and Dutton engine, made by the same company under the Rapson and Dutton
MARS engines are not Lister clones. Mars engines are bigger, heavier and
more robust than Lister engines. When you listen to a Lister and then to a
MARS you will agree. This engine has a 3 " diameter crankshaft and not one
component is interchangeable with a Lister.
MARS engines were commonly used in industrial situations such as factories
to power line shafts which powered a number of machines, a task Lister
engines had some trouble with apparently with their crankshafts twisting
under the load on start up, and why this company made the Mars Diesel.
5 HP MARS engines were painted Maroon colour as standard from the factory
although there are variations of colour in existence. 8 HP engines were a
This engine has not run since the original owner sold it in the early
1970's. Apparently it had not run for some years before that. The second
owner sadly passed away before restoring it and it sat in a shed untouched
with the third owner.
Close friend and temporary fourth owner, Simon Devere, assisted actively in
the mechanical restoration when I purchased it and assisted in the first
start after its mechanical restoration. This man is a genius when it comes
to diesel engines and he has the nickname "The Lister Whisperer" for good
reason. Thanks "Slippery".
This engine appears to have not done much work judging by its internals.
Work to the engine includes new rings, liner/cylinder hone (the original
factory liner had indiscernible wear in it), new valve guides made to
original specs, new valves to original specs (original was bent and caused
damage to the guide) , new big end Babbit bearing, new conrod bush, very
light head machine to ensure true flatness, new internal oil pipes, new
head gasket, new oil gaskets, new high pressure line, new welch plugs in
the head and new oil pickup.
There are still remnants of the original factory maroon paint on it that
have survived the years of weathering out in the cane fields.
Cosmetic restoration is planned shortly to bring it back to its original
livery. It will be mated with a steel transporter to emphasise its
industrial heritage and will be rallied with pride.
Video of the finished engine on transporter will be posted when it is done.
Enjoy and please share if you like.
This is the only video of a Mars engine running to this date anywhere. Hope
to see more.
best Honda engines !!
the best engine bays !!
clean and tight engines k20 swaped and b series on old school civics and
b16a b16a1 b16a2 b16b b18c b18c6 b18c1 b18b b20
My B18 Type R VTEC Classic Mini
The engine is a B18c6 from a Honda Integra, 197hp.
Subframe is a Watsons kit. Was fitted by Watsons Rally UK.
Recorded with a GoPro Hero HD.
Before video with the old 1380cc engine...
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Mercedes-AMG Engine Factory - V8 engine
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Comparison of MIVEC, VTEC and VVT
Comparison of the variable valve timing systems Mitsubishi MIVEC (2 cam
profiles), HONDA VTEC (3 cam profiles) and Toyota VVT (4AGE black/silver
top engine with adjustable cam gear).
Found on mivec.co.nz