NRE University: Cylinder Head Secrets. Pt 1 of 2. Nelson Racing Eng. Camaro, Corvette,Cadillac.
Join NRE's Tom Nelson visit to the West Coast Cylinder Head facility and see how NRE heads go through a thorough process of modification before use by NRE. More videos at http://nelsonracingengines.com. Very Interesting. Also go to http://VeritasMovieStudio.com.
Cylinder Head 201 - Radius Cut Valve Job
This video covers the complete valve job process that your machinist might
perform. If the 100 series videos didn't help you identify and correct a
problem with your cylinder head, then this is the next step. This video is
brought to you with permission from my machinist in full 1080HD, and covers
cleaning up the head inside and out, preparation and setting up a radius
cutter, cutting all 16 valve seats, valve grinding, and spans 3.5 hours of
actual work in under 30 minutes. There's nothing like this anywhere else
THANK YOU BALLOS PRECISION MACHINE. Thank you for the professional
explanation and execution of a job excellently-done, and un-precedented
access to your facilities.
A valve job is done by re-grinding or replacing valves, and then having new
seats cut to match the faces of the valves you're using. There are several
different machines that might be utilized to achieve this result, but the
process is the same no matter how it's done. There are seat cutters that
utilize cutting stones. There are valve seat cutters with 3 separate
angles installed 120° out-of-phase, and there are single cutters with all
3 angles (radius cutter) that cut with one blade in one pass. The machine
demonstrated here is a Sunnen VGS-20 Radius Cutter. This machine (now out
of production) produces a gradual curved seat that's superior to the shape
of a traditional 3-angle seat. While a radius cutter does contain the 30,
45 and 60 degree angles, it does so without leaving any sharp edges between
My valve selection includes Supertech 1mm oversized nitride-coated
stainless steel undercut and back-cut intake valves, and 1mm oversized
Inconel back-cut Exhaust valves.
Inconel is a high-temperature alloy utilized in marine and forced-induction
performance engines that can handle more abuse than steel can without
melting. The other characteristics of the valves which are discussed
typically yield bigger gains in airflow than simply using a bigger hole and
a bigger valve.
Why I did this to a perfectly-good cylinder head:
I changed cams. Because the valves were previously recessed during another
valve job 9 years ago, my valve installed height was increased and this
raised the operating positions of my rocker arms. My new camshaft
selection dictates using the stock valve install height. The only
solutions to this valve install height problem are to either replace the
valve seats, or install oversized valves. I opted for the latter.
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!
Extreme HP Engines of NRE. The Movie. Nelson Racing Engines. Tom Nelson.
This is a compilation of short portions of videos from 25 different engines
of NRE. We hope you find it interesting. In the high performance arena,
we think NRE has much to offer. This video displays much of the available
NRE product line. Many more engines are part of the NelsonRacingEngines
channel. More information can be found at http://nelsonracingengines.com
and http://nelsonsupercars.com. Also go to http://VeritasMovieStudio.com.
Chevy LT-1 Cylinder Head Full Porting Stage IV
This is the full blown Stage IV Max Street porting of the LT-1 Cross-Flow
Cylinder Head. Part One....In this we cover the begining to end of
unshrouding and polishing the combustion chambers. Thanks to Tom Kish for
the use of his heads and the extra time he allowed for me to film and
perform these mods, and his permission to display his heads and work
performed. This procedure removed 3cc of material, and blended the chambers
to discourage detonation. This is part one of three of mods to turn a
stock 170cc LT-1 heads into Edelbrock, AFR killers. The valve size remains
the stock 1.94 and 1.50 sizes. To follow more go to www.headbytes.com
NRE University. NRE Flow Bench. New X-Ram Manifold for LS Engines. NRE TV Episode 206. Tom Nelson
Tom Nelson starts a new series of NRE University with this video. Tom will
be doing more NRE University episodes in the coming months. These episodes
will give viewers more opportunity to see the inner workings and projects
ongoing at NRE. We hope you will find them interesting. Thank you all for
watching and subscribing! This is NRE TV Episode 206.
For more information about NRE products go to
For telling your unique story to the world go to
http://VeritasMovieStudio.com. Veritas Movie Studio is a media production
Size Matters...Exhaust Collector Testing Part 1
BangShift.com is proud to be bringing you another episode of BangShift
Tech. In this episode you'll find us testing Exhaust collector length with the guys at
Westech Performance Group. Special thanks to Hooker headers for sending us
parts to tear up too.
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.
TPI Porting Secrets. High Flow Fuel Injection. Ported L98.
This video shows one of the secrets used by Darin Dochterman at "High Flow
Fuel Injection" to increase airflow into any given TPI engine.
Here we are addressing the pinch/choke area in the outlet end of the TPI
lower intake manifold ports.
This is just one of the many porting techniques used by "High Flow Fuel
Injection" on the Tuned Port Injection intake manifold.
Stayed tuned for more... and Subscribe!
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Engine Porting Kit & How To DIY from Eastwood
Buy It Here: http://www.eastwood.com/engine-porting-kit.html
The Eastwood Engine Porting Kit can help your engine generate more power.
Watch the video.
When serious engine builders "blueprint" an engine, they'll "port" or
smooth-off rough head castings around the intake and Exhaust ports for improved, smoother air flow.
The engine can then "breathe" easier, resulting in greater power and
Increase horse power and torque on any engine
Industrial Aluminum Oxide sanding rolls, designed for both cast iron and
aluminum cyl. heads
Highest quality components on the market today
Detailed inst. allow you to port both heads in an evening
Developed to work with air or electric 1/4" collet die grinders
Lowest cost "complete" professional level kit available
Click the video below to see just how easy cylinder head porting is
A must for any performance engine build