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.
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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Subaru WRX STI: Old vs. New
CAR's technical editor Nicol Louw and journalist Wilhelm Lutjeharms
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Subaru exhaust secrets The Dump pipe and splitter
Brett reveals one of MRTs biggest secrets, the split dump pipe.
He shows how this can reduce lag by 300 rpm and adds power.
More pictures here
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Subaru Head Gasket Preparation
Justin at All wheel Drive Auto, explains how to prepare a cylinder head on
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Cylinder Head 205 - Degree 4g63 Camshafts
This video is all about establishing your valve timing baseline, and
adjusting your camshafts to the manufacturer's spec. It's only ONE of
several steps that should be performed when you're assembling your engine
on an engine stand. Establishing these conditions with accuracy while your
engine installed in the car is a near-impossibility, and the reason why...
is demonstrated in this video. There are several challenges to overcome
when performing these procedures on a 4gxx series Mitsubishi engine, and
they're all defeated here.
The cylinder head used in this video is a J1 spec '92 Hyundai Elantra
small-combustion chamber head which has had several valve jobs and has been
resurfaced multiple times by budget engine remanufacturers who didn't care
about quality control, as well as performance shops who do. It has had no
less than .040" removed from the head gasket surface, the valves are
recessed because of all the valve jobs performed, and at some point when it
was cut, it wasn't level. Removing material from the deck surface will
change the installed camshaft centerline, and that will change your
engine's valve timing events even if all other parts remain the same.
I would claim this is a multi-part video except that I've got the videos
broken up by topic already, and this one is all about setting your cams to
the manufacturer's specification. It is not the end of testing that will
be performed with these tools. The basics concerning the process and tool
fabrication are covered here. Further discussion on this topic concerning
the effects of advancing or retarding camshafts from spec, and for checking
your valve clearance will be in the videos that follow. I had to end this
video after the manufacturer's spec was achieved to make it easier to
digest, and because it would have created a video greater than one hour in
length despite the break-neck speeds that things happen here on
Where your cams are set determine how the swept volume of the combustion
chamber gets used. The information on the manufacturer's spec sheet is
their recommendation for baseline settings that will help you get the most
out of those camshafts. Whether or not your engine can operate with those
specifications without additional hardware or without causing a
catastrophic failure will be expanded upon in Cylinder Head 206. The next
video should be used as a companion to this video because establishing the
manufacturer's baseline is not the end of the assembly or testing process.
It's only half the battle. Should you be lucky enough to find your
combination of parts allow your camshafts to fit and requires no additional
adjustment after assembly, the steps in this video and in Cylinder Head 206
should still be performed if you are doing the assembly yourself. Failure
to inspect these variables may lead to a tuning nightmare once the engine
is back in the car, hard starts, or worse... bent valves and damaged wrist
Making these tools and performing these steps will give you the peace of
mind to know with certainty that your engine is operating safely at its
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
BBC Casting 241 cylinder heads Part 6 "Valve Guide Instalation"
Doing the valve guides correctly is the most important thing in the life of
the valve job. Tight clearances are KEY in the movement of the valves in
the guides. These valves from S.I. are to the BIG side so they have to be
"hand honed" to perfect clearances. The use of the Metal Clad Viton seals
help to keep just the right amount of oil on the valves. I am looking for
.0012 clearance on intake and .0015 on Exhaust and with taper NO MORE than .0003 top to
bottom. This exacting clearance makes this a 100,000 mile valve job with no
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.