Welp something happened. I did a total of 5 logs and then brought the car home after a log and parked it for a few hours. When I started it back up there was a noise. It sounded like an overly dramatic clutch chatter. I didn't pay much attention to it because the twin disk has always been noisy. But Wednesday (4/20/16) I went to go fill the beast up at the gas station and the noise was really loud then. Registering no knock, but it would get loud with throttle input. When I got to the gas station I shut the car off and then needed to start it back up. She was hard to start but would fire up once I gave her a little gas. Still had the loud noise. I then knew something was up so I moved her to a parking spot and then took the video below. Mark Gibson said it could be the fuel pressure relief valve off the fuel rail which it did kinda sound the same. So I swapped in a spare I had and the noise persisted. At this point the slave cylinder failed, it was brand new and was about 2 months old and had 150 miles on her. So this lead me to believe it was the clutch. Jake who had the clutch before be said it felt funny when he drove it after helping fabricate the downpipe and dump tube. So when I got back from EMN 2016 I towed the car from the gas station where I left it and took it back to the barn.
So fast forward to last Saturday, I got the engine and transmission out. I couldn't sleep last night so I went out there at 11 last night and worked until 2:30 AM and detached the engine from trans and then started crossing off possibilities. The clutch looked to still be aligned correctly on the engine. The trans turned over fine without making any weird noises and the fluid that came out that had 150 miles on it looked brand new. Oil looked great that came out of the engine also. So I took the spark plugs out and they looked great too. I then started turning the motor over by hand on the engine stand and watched the valves cycle through and all open and seal on the intake and exhaust side. Also the cams look great. Like I said above when the car was running and making the noise it wasn't registering any knock. So it leads me to believe its not the engine internally. So there are only a few things that move constantly with the engine. Clutch, Water Pump, idler pullies, and HPFP. So I'm going to put my HPFP on Sho's car this week to see if it makes noise on his car. I'm also sending these pictures of the clutch to everyone I know that has experience with the twin disks to see if they see anything wrong. I'll be pretty pissed if I pulled the motor and it was the HPFP problem. In the last log I took the HPFP was holding pressure fine but this noise started a few hours after that log.
Cylinder #1
Cylinder #2
Cylinder #3
Cylinder #4
Disk closest to the engine, sticker says flywheel side. I had it right. (dirty paw prints are from taking it off)
Middle pressure plate
Disk furthest from the engine, closest to the pressure plate. Sticker on other side says pressure plate side, and I had it correct.
Pressure plate furthest from the engine.
the outside of the pressure plate.
All the bolts were still tight and from what I could tell torqued to spec.
