Cylinder Head 105 - Valve Job Basics
Valves not sealing? Valves not bent? This is how you fix that problem.
In this video I outline the basic valve job procedure. Cleaning the
valves, cleaning the seats, cleaning the combustion chamber and lapping the
valves in to make a better seal.
Here I cover the process start-to-finish. It's the same exact process for
pretty much all non-rotary combustion engines. It takes patience and
perseverance to do this job, but anyone can do it. Reference your service
manual for measurements and service limits. Everything else that's not in
your service manual is in this video.
I apologize for not having broken busted crap to work with in this video.
It's more beneficial to all of you when bad fortune falls on me because it
gets well documented, and many people watching these videos are looking for
answers. If you have bent valves, you will discover it quickly once you
chuck one up in the drill. You'll see the face of the valve wobble around
while it spins. You'll see evidence of this damage on the valve seat. If
it's bad, you may see damage on the valve guides in the form of cracks or
missing pieces where the valve guides protrude through the head ports.
Give all that stuff a good visual inspection. ...and if you doubt yourself,
never hesitate to get a second opinion or consult a machine shop. They
will have access to expensive tools that you wont find in your average
PISTONS @ 10.000RPM
THIS WAS DONE ON A SHIT BACKROAD THAT LEADS TO A FARM NO MOTORBIKES COME
DOWN THIS ROAD UNLESS THEY WANT A SACK OF POTATOES BUT TRY PUTTING THEM ON
.The second part was filmed on a more used road but oil had all gone by
then so stop worrying i ride a bike to you no.
Amazing footage of a set of normal 4 cylinder car pistons moving at normal
speed and more. As a petrol head i no this happens but to actually see the
speed for real is just wicked. My favirite bit is when they look like there
Poor old rover 200
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BBC 1981: F1 engine failure mechanics
How a Cosworth DFV fails at high rev. Taken from 1981 BBC Horizon show
"Gentlemen, Lift Your Skirts."
(Full show can be found at http://vimeo.com/50943563)
Overhead Cam at 14K RPM
This video shows an operational cutaway of a BMW S1000RR — a 193HP
superbike — bumping against its 14,200RPM redline. A cam and valvetrain
at 118 cycles per second is an amazing sight (and sound)
Valve Lash Adjustment Video - Engine Building Car Repair DVD
Buy the "Basic Engine Building" DVD
Basic Engine Building DVD - Chapter 49: Valve Lash Adjustment
You should have done this previously in the "Pre-Assembly" section. This
time it's for real. You want to leave as much of the internal lubrication
in place as possible. If you follow the firing order of your motor, you'll
only have to turn the crankshaft one complete rotation. This section has
some of the more detailed 3D models to show you the internals of a working
BoxWrench.net is a community and resource designed for automotive
enthusiasts. The Basic Engine Building DVD is over three hours of engine
building that covers everything from removal and disassembly to final
assembly and engine start-up. This is the ultimate DVD for any home
mechanic or engine enthusiast that wants to see a complete rebuild from
Teardown to Start-Up. This video can be used to learn how to work on almost
any type of internal combustion engine including V8, V6, Straight 8,
in-line 6 and even 4 cylinder engines. All of the interactive features and
menus will not work over YouTube.
This video is great for people interested in car repair, car care, and
restoration. As well as hot rods, muscle cars, performance parts, and Boosting horsepower. It can also help
you to gain knowledge for increasing fuel economy, how to lower your
emissions, and covers preventative maintenance to avoid little things like
Get the full DVD with all of the interactive menus, Tools section and
engine Glossary terms here...
Don't forget our Holley Installation & Tuning DVD. Sample clips on our
youtube page and at our store here...
New Transmission DVDs and a Differential Rebuilding DVD just added.
BoxWrench DVD Store:
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How to port and polish high performance v8 heads,tips,tricks and trade secrets exposed
*******CHECK OUT PART 2 *****
COMBUSTION CHAMBERS http://www.youtube.com/watch?v=D63jgJs95gY
I look at porting and polishing high performance heads,I been
building engines for 30 years, most of that time in research and
development,I explain in real simple terms air flows and velocities,these
308ci General Motors Holden heads have been transformed over 70 hours,I
show you all the do's and dont's,keep a lookout for the rest of the
rebuild vids, as we head into final assembly,especially dialing in
camshaft's,compression ratio's and everything else that makes internal
combustion engines cranky,Aussie Heads and Race Engines-One Man One Shop
SBC Valve Guide Installation
John @ Costa Mesa R&D Automotive Machine describes how to replace valve
guides on the popular small block Chevrolet cylinder head.
Valve seal Replacement
Leaking valve seals cause your engine to smoke when you first start it up,
and then it usually runs the rest of the day with no smoke. Usually
replacing the valve seals will fix the problem. Here's how to do it. Of
course other engines may vary to some degree but the basics are the same.
1919 Buick First start since 1952
This is the first startup of this 1919 buick six roadster that had been
sitting in a barn in ohio since 1952. It was parked there with a bad
differential. My boss bought it on Ebay and i gently disassembled the
engine, cleaned out the 50+ year old oil, freed up the piston rings and put
it back together. I had to substitute a newer coil to get a strong spark
and had manually filled the float bowl of the carburetor. No fuel pump was
hooked up or water in the engine hence the short run time. This is a very
cool early overhead valve engine with an aluminum crankcase,cast iron
cylinder block, roller tappets, exposed valvetrain, zero gap piston rings,
and electric start. This car had about 14,000 miles on the odometer. Enjoy
the video! Check out my other video/slide show for engine disassembly
How to Reseat / Lap Valves (Basic Valve Job)
In this video i'm explaining how to reseat or lap valves in a flathead or
overhead valve engine. Also can be called a valve job, but this is not a
complete valve job. I also used to much valve grinding compound, it does
not require a whole lot. Usually when a engine needs this done is when a
engine has low compression that is found to be leaking around the valves,
or sometimes a engine will backfire do to the valves not closing
completely/properly. Thanks for watching.