Cylinder Head 105 - Valve Job Basics

Valves not sealing and they're not bent? This is one way to fix that problem. I have filmed a professional machinist complete a proper valve job which includes cutting new seats, installing new valves, and doing some valve grinding tricks at the following video: https://youtu.be/eMNFeToqzJU For as little as $1 per video, per month you get access to early releases, exclusive content, and discussions at: http://www.patreon.com/Jafromobile Once you've completed this work, you can clearly see the size, width, and consistency of the valve mating surface on BOTH the valve, and the seat. Should any distortion appear in the mating surfaces, you will need the help of a machinist to fix this properly. I outline the cleaning and inspection techniques to help determine whether or not you need to pay a machinist to perform an actual valve job. If you find after performing these steps that your valves don't seat properly, or that your valve seat or valve margin measurements are out of spec, only then would you need a machinist's help. Here I cover the inspection process start-to-finish. All of these same procedures would be used by your machinist, usually with better equipment... but you can still do the same thing in your garage. These techniques work exactly the same way for just about every non-rotary combustion engine. It takes patience and perseverance, but anyone can do it. Reference your service manual for your engine's specifications and service limits. Everything else that's not in your service manual is in this video. 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 gearhead's home garage. Tools that will give better, faster, more accurate answers than someone could determine with their eyeballs when they don't own those expensive tools. Lastly: The oxidation found on these valve seats were caused by 110 octane leaded race fuel. Some kinds of race fuel are corrosive to hardened steel valve seats. This head had only about 30,000 miles on it since its last valve job. These techniques will not fix damaged valves without causing a different kind of damage. I'm sorry I had no damaged parts beyond corrosion to show you in this video.

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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 on YouTube. 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 their faces. 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.





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. Tools. Large Spring Compressor: http://www.jbtoolsales.com/gearwrench-383d-valve-spring-compressor/#oid=100 2_1 Lisle Spring Compressor Tool: http://www.jbtoolsales.com/lisle-36050-valve-keeper-remover-and-installer-k it/#oid=1002_1 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. Related videos. 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 Articles. How to Find Leaks: http://www.ericthecarguy.com/faq/finding-and-fixing-fluid-leaks Discussion about this video: http://www.ericthecarguy.com/kunena/18-The-EricTheCarGuy-Video-Forum/50319- how-to-remove-replace-valves-in-a-cylinder-head#92526 The best place for answers to your automotive questions: http://www.ericthecarguy.com EricTheCarGuy code lookup: http://www.ericthecarguy.com/obd-code-lookup Facebook: https://www.facebook.com/EricTheCarGuy?fref=ts Twitter: https://twitter.com/EricTheCarGuy Google+: https://plus.google.com/100195180196698058780/posts Information on Premium Membership: https://www.ericthecarguy.com/premium-content-streaming-etcg-content Stay Dirty ETCG 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.





Lapping and Checking Valves (EASY WAY)
Just lapping some valves Tools Used: Drill/Driver hex to 1/4 drive Lisle 21200 Valve Lapper CTA Fine/Coarse Lapping Compound Permatex Prussian Blue Dykem Steel Blue Layout Fluid Digital Caliper Note: A proper valve job is recommended to be done by a professional in a machine shop. I did this because this engine is not worth much and it is not a high performance engine. (LOW BUDGET)





HOW TO DO A VALVE JOB! Bent Valves, Broken Timing Belt, No Machine Shop!
04 Hyundai Sonata Broken timing belt. How to repair the cylinder head without sending it to a machine shop. This Hyundai had a broken timing belt and some bent valves. I removed some valves from a parts cylinder head. I also had a few leaky valves that didn't seat properly.




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