Subaru Valve Job.wmv
This is the first part of a video on the Subaru valve job. It details all
aspects of the job from disassembly, cleaning, grinding valves and seats to
modifications used to enhance air flow. The entire video is over 25 minutes
in duration, this is the first 10 minutes of that video. For information
about the entire video, call 949-631-6375 for cost and shipping charges.
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
Valve guide removal and install. Vw 2l cu type 4
A video showing the method used to remove and install valve guides on a vw
type 4 cu code engine.
When talking about the die/drift i mean 0.2mm smaller than the valve stems.
to see how to ream the guides see
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.
Subaru Head Check Before Installing Head Gaskets
Good deal on a valve spring compressor tool here:
Subaru Head Check Before Installing Head Gaskets Check out my other
channel here http://www.youtube.com/watch?v=1KKvwMaIotA
GRINDING VALVES WITH A VACUUM HOSE & DRILL. VALVE LAPPING FOR BROKE FOLKZ
Automotive technician since 1991 in this tutorial I show you the simple
process of how to grind valves at home using a drill, vacuum hose and
it is very important that you keep the valve stem oiled and keep the
compound off the valve stem
stay encouraged, keep your head up and God Bless.
Chevrolet Cylinder Head Dyno Test
Looking for an answer to the age-old question (at least when it comes to
engine builders), is it better to refurbish an cheap old set of cylinder
heads or buy new? So we took a pair of $50 Chevy swap meet heads and put
them up against a set of new Iron Eagles from Dart. What we found out might
For more information, including Dyno results and flow bench
tests on both heads, check out http://www.horsepowermonster.com/2011/i
ron-eagle-vs-stock/ . Thanks!
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MORE INTERNET GOODNESS:
How to change a Subaru Head Gasket without removing the engine
These are the sets I like to use on these EJ25 engines.
1:07 Identifying engine type
1:25 Inspection showing oil leak from head gasket
3:12 Remove air intake (discussed)
3:35 Remove battery (discussed)
4:00 Remove air compressor (discussed)
4:10 With above removed and belt covers removed
4:20 Remove belts
5:49 Remove A/C compressor tensioner bracker
7:00 Remove alternator
8:50 Remove air compressor (discussed)
8:56 Drain radiator
10:10 Remove power brake Booster
vacuum line, fuel lines
11:48 Disconnect spark plug wires/brackets
13:42 Remove A/C compressor
14:15 Remove spark plugs/bracket
15:02 Disconnect oil sending unit wire, coolant temp sending unit, crack
shaft position sensor wire
15:50 Remove radiator
How to change a Subaru Head Gasket without removing the engine
Subaru Separator Plate
This is What is commonly called the Seperator Plate on your Subaru, and is
a common place to develop an oil leak.
How to Reseat / Lap Valves (Basic Valve Job)
In this video i'm explaining how to reseat or lap valves in a flathead or
overhead valve engine. Also can be called a valve job, but this is not a
complete valve job. I also used to much valve grinding compound, it does
not require a whole lot. Usually when a engine needs this done is when a
engine has low compression that is found to be leaking around the valves,
or sometimes a engine will backfire do to the valves not closing
completely/properly. Thanks for watching.
Fitting new valve guide seals without removing the cylinder head Suzuki Vitara
This is how you can remove and replace valve guide seals with the head
still on the engine. Normally you have to have the head off so you can fit
the valve spring compressor on to the head of the valve. I had heard of
this method but never tried or seen it done before. The only special tool
is a piece of string.
Watch the video and see the "Essex Red Neck" at work :-)