RMin280

does this work?

I’m looking at cylinder 4 intake, second lobe back from the middle cam tower. It’s the same one y’all said might be the one falling off of the wear pad. What exactly do you want a picture of? I want to make sure to be able to show you want you need to see.

I was looking at that valve and noticed that lash pad seems a little displaced. Could this pad shifting cause the cam to fall off? It only seems to be off by a little bit.

Do I still need to remove the rockers or is looking at both sides good enough to now?

Here’s the other side. I just changed my oil recently but it’s been run pretty hard with it.

This is the best I can see. Not exactly sure what to look for or what it should look like. All the rockers look like they have similar wear although I didn’t measure anything, no damage that I noticed.

Interesting, I'll look and see the pad wear in a minute and if I can't see then I'll try what you said with the screwdriver.

Nevermind, I think I was able to find it. Is it a L series valve compressor? Would I also need to support the valve some way to prevent it from falling down or do the keepers stay in place?

What is the name of that tool?

Do I need to take everything apart to check the wear pattern or can I check with everything still together?

What should the wear pattern look like if it is correct?

My mistake, I have been so busy with schoolwork that I forgot to take a video of it running to show y’all. IMG_1257.MOV I’ll try some of the things y’all suggested this evening and see if I can figure something out to check cam and ignition timing.

I know most if not all of the modifications but didn’t figure it mattered here. I’ll find tdc and mark it on the damper and do a compression and leak down test but I’m not touching the distributor. The car was at Godzilla raceworks and got a new ecu since the old ms2 had an issue and was too old for them to work on. If I mess with the timing on the distributor I’ll need a new tune. What do you mean my doofer is miles away from the damper? As in it’s not as close to the damper as it would be for other L series? What else would I do with the car? I bought a modified 280z, fixed several issues, and now I’m driving the car and going through everything to make sure everything is in good working condition. Should I be doing something other than driving my car?

I turned the cam to see if there was any play and there isn’t any. I also turned the engine over by the crank bolt and that sound wasn’t there. I think it’s something different when it’s actually running.

@Reptoid Overlords Yes it does have a larger cam. To me it sounds almost separate from the valve train noise. @siteunseen I’ll have to try that.