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
Comp Cams - How it's Made
Competition Cams, one of the industry leaders in performance engine
equipment, walks PowerTV through the complex process of designing, creating
and manufacturing its high performance cam shafts.
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
Eastwood's DIY Polishing and Porting Cylinder Heads Kit
Buy The Kit Here:
In this video, Mark shows how to Polish and Port your Engine Cylinder Heads
and gain up to 10% more HP with Eastwood's Engine Porting Kit!
CYLINDER PORTING & FINISHING KIT offers you the most requested carbide
burrs and abrasive smoothing rolls and tapers used for engine potting and
finishing Your kit includes four different cone and tree-shape
steel-hardened, precision double-cut Carbide Steel 6" long Burrs and 10
each 80 Grit Abrasive Cylinders and Tapers with 2 each 4" and 6" long
Cylinder Head 204 - Porting & Polishing
This is a first-generation 1992 1.6L Hyundai Elantra
small-combustion-chamber head. Thats what it is. It's a J1 engine's
In Cylinder Head 106 I talked about the mainstream porting theories as they
are discussed. We looked at a cylinder head that I have thousands of
dollars of professional work performed on, and a bone-stock
second-generation head that I didn't port.
In this video I just might do something you haven't seen done before. For
some, that may be uncomfortable. The port and polish job I perform here is
what I think will work best for my current build. This is not an extreme
killer port job. What will be different here is where port textures are
concerned, I will be following the advice of a reputable source that will
remain un-named. You're free to port yours differently than I do in this
video, and I give you that out, around the 20 minute marker.
The Hyundai is far from being an ultimate-performance build. It's a $400
box of scraps with nothing but time invested. It's perfect for this video.
My finished product WILL be an improvement over what I had. I don't yet
have access to a flow bench. I still have an achievement to un-lock. As
far as you should be concerned with the techniques I employ... without flow
numbers there is no evidence of what this will do, but we will gather lots
of info from dynp sessions and drag strip time slips. If I could test it on
a flow bench, I would.
There are MANY, and when I say many, I mean thousands of flame war
mongering pirates floating around on rough seas with a hair trigger cannon
finger itching to fire if you port a head any differently than what the
herd mentality says to do while porting a cylinder head. I cover the herd
mentality because it has merit. It's been tested. Tried and true. But I
don't follow it to the letter of the law. I'm definitely not here to
de-bunk it. I would port a cylinder head differently for each build based
on how that engine was used. There's an extremely valid reason why
relating to air speed. It's not the texture of a port that maximizes the
effect of fuel atomization, but the velocity of the air running through an
x or y sized valve. The driving factor in this is the piston speed. I'm
not going to give you the technical information, but will refer you to
information about the Lovell factor. There's a better description of this
in the links below, and even a calculator to help you find your engine's
Why the Lovell factor is important:
Lovell gas factor calculator:
Only people who have flow testing equipment know for sure what really works
and have the capability to produce a perfectly-matched port job for the
ultimate performance build. Those guys know the definition of ultimate,
and THEY are floating below the water Aegis-class submarines ready to blow
your comment up if you don't know what you're talking about. They don't
care if you're an armchair mechanic or a herd of pirates. I will say,
they're zoomed in pretty close on me right now, and I'm expecting to take a
few hits. My work will be tested based on Dyno and drag strip performance,
and the results will be posted here. Fortunately, those kinds of videos
are a WHOLE LOT EASIER TO MAKE!!!
How-To Machine a Chevy 350 V8 Small Block Engine
Chris Duke from Motorz TV http://www.motorz.tv takes our Chevy 350 small
block to the machine shop to show you the process of machining a block.
Special guest Britt Bostick from NuTech Engine Systems.
Show notes: http://www.motorz.tv/machine-shop/
Watch the complete Chevy 350 engine rebuild series:
1. Tear Down: http://youtu.be/LZO1fWVxN4c
2. Machine Shop: http://youtu.be/e3r3wRBoXkk
3. Bottom End: http://youtu.be/gfrYWKi78zc
4. Top End: http://youtu.be/g46s-Vr4Br0
5. Finale: http://youtu.be/mvJNMN-oP68
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.
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