The car has been over revved, and the timing jump off in the process. Since then, the timing was redone, all torque specs were followed, valve cover gasket was replaces, as well as the intake manifold gaskets. Is this a bent volve noise or rod knock? The engine is an S50 bored to 3.2.
a problem with my head?
yes ok, i admit it, i broke it. but it is only the one valve. atleast you get to have a look at the engine as its been torn down a bit, i have got lost of clean shiny and painted bits to go on and make it lovely
22RE bent valve
Replaced the cylinder head on this thing with one from another engine. Had to change the camshaft. When I removed the original cam from this cylinder head, the threads came out of one of the holes for the rear cam bearing cap.
To repair it, I bought a GARBAGE set of thread inserts for 8MM x 1.25 made by ALCOA. They didn't have heli-coil at the store that day (and I should have waited), so I went with the ALCOA set. BIG MISTAKE!!!
Tried the first insert. Seemed a little tough to go into the hole, but figured it was okay. Tried to screw in the bolt, it felt like I was cross-threading the new insert threads. When I removed the screw, out came the insert with it. I tried the second insert, with same result. The same thing happened with the third insert, and on the way out, the insert removed the threads once more from the bore in the cylinder head.
I drilled the hole out to the next size and tapped it to 10MM. Installed a whittled-down cap screw to replace the 8MM screw. I didn't notice that it was too tall by *just* enough when I was bolting down the rockers, so I bent the #1 Exhaust valve. I also broke the rocker assembly, as it is cast iron.
I knew I was going to have to tear it apart again, and I had already wasted the head gasket and every other gasket that's going to rip when I take it apart, so I decided to run it, on the odd chance that I was wrong about the bent valve. However, as the video shows, I was correct..
Not happy either, as the cylinder head this now hosed-up one replaced was redone to the tune of $600 and only lasted 7000 miles.
Porsche 944 Timing Belt Failure BENT Valves
Porsche 944 Timing Belt Failure & subsequent results. Got a 944 Porsche 2.5lLiter 4 Cylinder. Unfortunately it has an interference head. Some mechanics tried to "fix" it not knowing what "interference" means. They replaced the timing belt and bent the valves even more. They gave up the 2nd time around. Good thing they never finished the job as it would not have worked anyway.
Jeep Engine Noise 2.5 broken piston skirt #3, tick, knock
The sound of a jeep motor with a broken piston skirt. I pulled the valve cover expecting a bent push rod, but no such luck. Rockers were moving fine, changed oil, push rods spin while running, did not go away after warming up or driving. 55,000 miles. Noise was more noticable underneath. Gets louder when applying accelerator. loosened the oil pan and fished around with my hand and collected 4 pieces that turned out to be the piston skirts.
How to lap valves on a 1995 Eclipse Talon 420a head (non-turbo)
When my 1995 eclipse timing belt broke I knew that there was a 99% chance that the valves were bent in the process. I searched the internet for a good way to replace them, without having much luck. I figured I would try and come up with something myself, I figured I would document the whole process of valve lapping by video...hope this helps you if you are in the same bind as I was!!!
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.
mk4 2.0 jetta, rod knock or valve or what?
mk4 jetta, don't really know what this noise is. could it be rod knock? the o-ring on the oil cooler blew going 70mph and all the oil blew out. didn't shut car off till oil light came on. replaced head cause it had valve tick and then this started happening. it goes away sometimes, maybe for 10 seconds every now and then.
Ever been to the dentist and had that dam put in your mouth that protects the dentist from bad breath and you from splashing blood?
my timing belt broke so i changed that now its making this noise i thought my valves were bent but then the guy at pep boys tells me my engine is a non-interferance engine so there not bent acording to them
but what i do know there is something wrong help me out please id like to know what the problem is before i try cracking into her again