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.
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
NRE University: Cylinder Head Secrets, Part 2 of 2.
Join Tom Nelson as he visits West Coast Cylinder Heads to film typical NRE
cylinder head modification. Good stuff for gearheads. Hundreds of videos
at http://nelsonracingengines.com. This is part 2 of 2 parts.
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.
Mosler. 1800 HP from Nelson Supercars. 427 LSX Twin Turbo., See at Las Vegas Speedway
This 1800 HP car eats Lambos and Ferraris before breakfast. Look at this
awesome installation of this very powerfull motor that still runs on the
street. Follow the video through the details of the motor and see the car
in action. Go on a road trip from Las Vegas to Chatsworth, California.
This car is amazingly quite and reasonablely confortable. Its a race car
for the street. I want this car! More at http://nelsonracingengines.com.
Also go to http://VeritasMovieStudio.com.
New 2500 HP Revolution 4 Cam Small Block Nelson. Quad Cam V8. From Nelson Racing Engines.
This engine is truely a revolution. This engine changes what is possible
in the Hot Rod industry. It is a leap foward in Hot Rod engine design.
NRE's Tom Nelson explains the many unique features of this all new Small
Block Nelson. Go to http://nelsonracingengines.com, and
http://nelsonsupercars.com as well as http://nretv.com. Also go to
Porting an aluminum intake manifold, basics of porting and polishing.mpg
Porting and Polishing Basics. Porting on an aluminum intake. A few
principles and techniques for porting. The therory and approach discussed
can be applied to porting most intakes and porting and polishing in
general. Abrasives, carbide burrs, surface finish, porting tools and tips.
Equipment from CC Specialty Tools (ccspecialtytool.com)
1870 HP Chevelle Street Test. Nelson Racing Engines. Tom Nelson. 1969 Chevelle. NRE.
Tom Nelson takes us for another famous ride in this beautiful 1969
Chevelle. Its not completely finished as yet. What a stunner its going to
be. What would this car do with slicks? For more information go to
http://nelsonracingengines.com as well as http://nelsonsupercars.com. For
Video media production go to http://VeritasMovieStudio.com. To see the
previous NRE TV episode for this car click here
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!
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