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
What i use to polish cylinder heads and intake manifolds
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Just showing your guys how we go about polishing and getting the beautiful
finishes after its all said and done.. this method takes some skill.. some
might say i make it look easy.. at 14000rpm the grinder i use is not a joke
and has hurt people when they dont use it properly.. when the paper unloads
on a long rod it tends to bend the rod at a 90 degree angle and if the user
freaks out and does not hold it away and let it slow down then they end up
with a nice big sliced up arm or mid section.. i myself have bent a few in
my time and lucky for my i have a quick reflex and manage to hold it away
without hurting myself..
Cylinder Head Porting and Port Matching
Anthony @ DIYautotech takes you through the steps on how to port match (
gasket match) your cylinder heads. This is a fairly simple project that
may take you about a day, but will give you a cylinder head with high flow
High Flow = More Power
If you have any questions, please feel free to ask!
Don't forget to subscribe & watch all my other automotive videos!
Cobra Engine Build Part 1
This will be the first in a series on the engine build for my Cobra. This
is a 351W bored 0.030" with a 408 stroker crank. The intake was converted
to fuel injection and featured in a previous video. I will list components
as much as I can.
Cutting Excess Guide from ProComp 210 SBC Head, custom Porting Combustion Chambers 4
Part Four of Port modificatins on ProComp 210cc aluminum SBC heads. Guide
over hang from installation and correcting the combustion chambers to
unshroud the spark plug is a big deal on these heads. China castings leave
a lot to be desired, but still with all the work you must do it is still
the bargin of the year and is a force to be reckond with when "bang per
buck" is needed. The base of the spark plug should not be exposed in the
chamber, and any valve guide "Overhang" will obstruck flow and create fuel
"sheer" which seperates vapor to droplets that wont burn. Most Big Name
companies will not take time to detial these issues as production cost
prohibit these mods, so have your local machine shop take apart your heads
and look for these problems before you bolt them on your prize engine.
Cylinder Head 106 - Casting & Porting Tech
No really guys, what can I type here? I just went on for 18 minutes
without shutting up. I apologize for deviating from my normal format, but
we're almost there...
...when I port a head, there will be no voiceover, and it will be a
Engine Building Part 1: Blocks
This is the first in an engine building series that focuses on blocks. I
talk about general machining and options for rebuilding or starting a new
How Cylinder Heads Work
This video details how some cylinders heads are made and the basic idea of
how they all work. Understanding how they work is critical in diagnosing
problems. I only had 15 minutes so I put in as much detail as I could.
Cylinder Head 104 - Remove Valves & Springs
Just one of many ways to remove valves from a cylinder head. I haven't
seen a valve compressor like this one on YouTube yet. I know it's nobody
makes them like this, because this one is a custom hack job specifically
for 4g63 heads... but it's extremely effective and easy to use.
Since I don't own a valve grinder, valve spring pressure testers (for
installed height measurement), or valve seat grinding stones... there are
several services I'm unable to perform myself. But since I can get the
head disassembled to this state, it would be easier and cheaper for me to
have them serviced by someone who does.
Valve grinding machine time is cheaper if they don't have to tear down the
head. You can lap them in yourself, but if the seat's in really bad shape,
it will require attention to allow any of those efforts to be worthwhile.
Valve seat grinding if necessary needs to be done with the proper tools,
and if the seats must be replaced, then it can get expensive. Usually
$20-ish a hole. Sometimes an oversized bore can be cut into a factory
seat. I'm ordering a set of valves to see if that's possible.
Classic Car Porting Heads for Power
This segment is from automotive author Jim Richardson's video, "How To Port
Cylinder Heads for More Power." Here Jim describes how to do port