Broken Bolt Removal-Part 2.mp4
Watch as John Edwards @ Costa Mesa R&D Automotive Machine drills out a
broken bolt on a BBC cylinder head. (949) 631-6376
3000GT Head Porting
heads porting and matching for 6G72.
ferréa valves oversize +1mm.
made by Fred 62, a french 3000GT owner.
aluminium cylinder head repair
http://www.aluminiumweld.co.uk This 1948 Bristol 401 aluminium cylinder
head casting is so porous and full of impurities especially in the
combustion areas , that when you light up its like trying weld through a
thick non viscous layer of slag with nothing underneath. Joy!.. Follow the
link to see part 2 of this video
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.
How To Remove and Replace Valves in a Cylinder Head -EricTheCarGuy
If you need to remove a valve from a cylinder head either to replace the
valve or replace the valve seals, this video will help you do that. You can
also do this process while the cylinder head is still fastened to the
engine block with some tools. To do that, put the piston at TDC compression
stroke and make sure both valves are closed. You can then run compressed
air into the cylinder to hold the valves in place as you compress the valve
springs. I often use my compression tester hose to do this. You need to
remove the schrader valve first before you attempt this, if not, air will
not flow into the cylinder. You can also use a piece of rope or equivalent
to keep the valves from dropping into the cylinder while you work. This
method works well if you're just replacing the valve seals. You won't be
able to use the large spring compressor however. You'll have to use the
Lisle or some other type of compressor do manage that task. Here's some
useful links for you.
Large Spring Compressor:
Lisle Spring Compressor Tool:
I had a heck of a time trying to find the Honda special tool and was not
able to provide a link for you. Sorry about that. The Lisle tool will work
just fine, OR I've seen some home made versions of that type of extension
that looked like they'd work pretty well.
Basic Parts of an Engine: http://www.youtube.com/watch?v=saPGX-1qC4M
Civic Engine R&R Part 1: http://www.youtube.com/watch?v=Me9w6aIqJ48
Tahoe Engine R&R Part 1: http://www.youtube.com/watch?v=aMkqWMvcdiQ
Dodge Ram Engine R&R Part 1: http://www.youtube.com/watch?v=oc3zSgEA8Jk
Sonoma Engine R&R Part 1: http://www.youtube.com/watch?v=5ivqj2LjE28
How to Find Leaks:
Discussion about this video:
The best place for answers to your automotive questions:
EricTheCarGuy code lookup: http://www.ericthecarguy.com/obd-code-lookup
Information on Premium Membership:
Due to factors beyond the control of EricTheCarGuy, it cannot guarantee
against unauthorized modifications of this information, or improper use of
this information. EricTheCarGuy assumes no liability for property damage
or injury incurred as a result of any of the information contained in this
video. EricTheCarGuy recommends safe practices when working with power
tools, automotive lifts, lifting tools, jack stands, electrical equipment,
blunt instruments, chemicals, lubricants, or any other tools or equipment
seen or implied in this video. Due to factors beyond the control of
EricTheCarGuy, no information contained in this video shall create any
express or implied warranty or guarantee of any particular result. Any
injury, damage or loss that may result from improper use of these tools,
equipment, or the information contained in this video is the sole
responsibility of the user and not EricTheCarGuy.
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
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.