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 gearhead's garage.
cylinder leak test how to check for bent valves
i did this video to help some of you not get ripped off when buying a motor. i will be doing many videos of how to test parts and what to look for. please email me if you have question or what to learn how to test something else firstname.lastname@example.org or email@example.com
CHECKING LEAKING VALVES EASY W/ AIR & BUBBLES THEY DONT TEACH THIS IN SCHOOL, ONLY OLDSKOOL
AUTOMOTIVE TECHNICIAN SINCE 1991 I SHOW MY METHOD FOR CHECKING VALVE AND VALVE SEATING (OTHER THAN THE CYLINDER LEAK DOWN TEST WHILE THE HEAD IS ON THE CAR) FOR ANY LEAKAGE WHILE THE CYLINDER HEAD IS OFF THE VEHICLE SO YOU DON'T HAVE TO GUESS IF WHETHER OR NOT YOU NEED TO GRIND THE VALVES. BUT IF YOU GO THROUGH ALL THE HARD WORK OF PULLING OFF THE HEAD THEN YOU MIGHT AS WELL GRIND ALL THE VALVES AND SEATS. THIS IS JUST SHOWING YOU PROOF THAT YOU CAN STILL CHECK FOR LEAKAGE WHILE THE HEAD IS OFF THE ENGINE BLOCK BY SIMPLY USING WATER AND AIR. KEEP IN MIND PITTED SEATS, BENT VALVES, WARPED HEAD, BAD VALVE GUIDES AND A FEW OTHER FACTORS CAN ALSO CONTRIBUTE TO A LEAKING VALVE & SEAT. IF YOU DO NOT HAVE AN AIR COMPRESSOR THEN TRY COMPRESSED AIR IN A CAN USED FOR CLEANING COMPUTERS (THEY SELL THEM AT WALMART) BUT MAKE SURE YOU USE A LONG STICK NOZZLE TO APPLY AIR RIGHT BEHIND THE SEAT EDGES JUST LIKE I DO IN THE VIDEO. GO GET IT! STAY STRONG AND NEVER LET ANYTHING OR ANYONE CRUSH YOUR FAITH IN JESUS CHRIST OR YOUR WILL TO WIN!
EASY, HOW I LAPP & GRIND VALVES. THEY DONT TEACH THIS TRICK IN SCHOOL, ONLY OLDSKOOL.
Automotive technician since 1991 I show how I do a valve grinding job (Lapping Valves) at home using a vacuum hose, drill & compound, don't over think it and don't assume it cant be done. learn how and save money on your project with out taking your cylinder head to the machine shop. Valve guides must be in good shape ( with no significant play or bent Valves before you perform this task, but this procedure works very well if done with care & quality. Go get it! and God bless.