Edelbrock RPM Olds 455 Head Porting
The scariest thing I ever did was port a set of new Edelbrock aluminum
cylinder heads. My first attempt at porting any cylinder head. I raised
the roof .200" and dropped the floor .040". It's best to leave the floor
alone or raise it by filling with epoxy. Porting kit by Mondello.
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!!!
2 stroke transfer ports information, along with porting and polishing tips
Information about the transfer ports on 2 stroke engines. An explanation of
the how the transfer ports on a 2 stroke cylinder work, along with tips for
porting 2 stroke transfer ports. 2 stroke transfer port timing and
trajectory are critical to power production results.
brought to you by CC Specialty Tools, world leader in porting and polishing
What i use to polish cylinder heads and intake manifolds
Join me on Facebook! www.facebook.com/omgitsmrmack
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..
3000GT Head Porting
heads porting and matching for 6G72.
ferréa valves oversize +1mm.
made by Fred 62, a french 3000GT owner.
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
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!
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 103 - Deck Tech
How to clean, inspect, and determine what you can do with your cylinder
head. Also how WHAT you do affects your oil system. There are many
variables at play when you make changes to your cylinder head deck from
your oil system, compression ratio, your valve timing and potentially even
disaster. 'best not to go that far with it. Watch this video and avoid it
if you're building your own 4g63 head.
The differences between this head and a 1g head are mostly related to port
sizes on the intake and Exhaust, and
different sized head bolt holes. The 7-bolt uses an 11mm bolt, and a
6-bolt uses 12mm. 1g heads have gigantic intake ports, but aside from
that, valve geometry, oil system functionality and the service limits are
all the same.
Also, click these links for in-depth discussions about oil port
modifications for all generations of Mitsubishis, and specifically for 2g
head installations on a 1g block.
4g63 Oil Port Modification:
2nd gen head on a 6-bolt block:
Possibly 2 of the best threads on 'Tuners for anyone considering a
1g-in-a-2g or for anyone that wants to know everything about a DSM oil