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.
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
EASY, HOW I LAPP & GRIND VALVES. THEY DONT TEACH THIS TRICK IN SCHOOL, ONLY OLDSKOOL.
Automotive technician since 1991 I show how I do a valve grinding job
(Lapping Valves) at home using a vacuum hose, drill & compound, don't over
think it and don't assume it cant be done. learn how and save money on your
project with out taking your cylinder head to the machine shop. Valve
guides must be in good shape ( with no significant play or bent Valves
before you perform this task, but this procedure works very well if done
with care & quality. Go get it! and God bless.
5 Horsepower Briggs Restoration Project and How to unseize pistons and valves
May be a while on the rest, just hang in there, I will eventually work on
this again, its just going to take alot of money to get it bored out and
sleeved, new valves, new piston/rings, new rod, everything! i found an old
briggs and stratton engine block with a thrown rod, seized piston and
valves. In this video i unseize the piston and valves, and remove them. And
begin the clean up process. Cylinder might have to bored. Also note, i said
on the video that i may need a new piston because of the stuck rings, not
necessarily true, because the rings should come off with no problem. Unless
the piston is scored or worn, it shouldn't need replaced. Thanks for
watching, and please subscribe!
How to lap valves on a 1995 Eclipse Talon 420a head (non-turbo)
When my 1995 eclipse timing belt broke I knew that there was a 99% chance
that the valves were bent in the process. I searched the internet for a
good way to replace them, without having much luck. I figured I would try
and come up with something myself, I figured I would document the whole
process of valve lapping by video...hope this helps you if you are in the
same bind as I was!!!
Compression Testing and What You Can Learn From It - EricTheCarGuy
Compression Testing and What You Can Learn From It - EricTheCarGuy
Here is a video on performing a compression test on an engine to assess
it's mechanical condition. An engines ability to compress air and fuel is
directly proportional to it's performance since an engine is nothing more
than an air compressor once you take away all the controls. A compression
test is a good general test that will give you an idea of the engine's
overall health but it does not give specific information on what the
problem is should there be one, for that a "leak down test" would be
required, here is a link to that video.
However if you find yourself looking for the source of a performance
problem with an engine, this is a great place to start. This test is often
overlooked in favor of looking at the fuel or ignition system, I think
that's a mistake, if an engine can't perform mechanically no amount of
electronics will make that better.
Recently, I hit the 500 subscriber mark and I'd like to thank all of my
subscribers past, present, and hopefully in the future for that. I enjoy
making these videos and the fact that you seem to like watching them means
a lot to me. So, thanks for subscribing, rating, and commenting, those
little contributions make it all worth while.
Click below and Stay Dirty
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Also see the video I did, "Octane Ratings and the 4 Stroke Engine Cycle"
for more information on how compression works and why it is important.
Thanks for watching and stay dirty
Due to factors beyond the control of EricTheCarGuy, it cannot guarantee
against unauthorized modifications of this information, or improper use of
this information. EricTheCarGuy assumes no liability for property damage
or injury incurred as a result of any of the information contained in this
video. EricTheCarGuy recommends safe practices when working with power
tools, automotive lifts, lifting tools, jack stands, electrical equipment,
blunt instruments, chemicals, lubricants, or any other tools or equipment
seen or implied in this video. Due to factors beyond the control of
EricTheCarGuy, no information contained in this video shall create any
express or implied warranty or guarantee of any particular result. Any
injury, damage or loss that may result from improper use of these tools,
equipment, or the information contained in this video is the sole
responsibility of the user and not EricTheCarGuy.
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.
Honda Head Job, & Valve Seal Replacement
This is a video I did for a project. In this video you see us replacing
seals and it also covers other basics like valve spring compression and
lubing your cylinder head.
Here you can access the same online info that I use to work on my own cars:
Here at Northern Tools you can find Milwaukee Tools, and other tools I use
in my videos:
Click here to show thanks, and help support Fixbook:
Fixbook DIY Car Repair
Briggs and Stratton Power Built 12.5 HP Flathead Model 28 Rebuild, Teardown / Reassembly PART 2
PART 2.... In this video i'm doing a teardown and rebuild of a Briggs and
Stratton Power Built 12.5 HP Flathead Model 28 Lawn Mower engine. Hope this
series helps you, be sure to watch the other parts. And the last part is
the first start of this motor after being rebuilt (not a complete break in
video, just the first few minutes of running and adjusting carburetor) The
only thing i left out was checking the ring gap clearance, which all you do
is put a new ring in the cylinder use the piston to push it down about a
half inch or so and use a feeler gauge to check the gap on the ring. Use
general safety rules when doing anything like this, it is extremely to
cut/smash fingers at any point. I cut my thumb really bad on the timing
gear on the crankshaft (off camera). Just be careful and use common sense.
Thanks for watching