GTharmony
Member
- Joined
- Mar 16, 2026
- Threads
- 1
- Messages
- 15
- Reaction score
- 8
- Location
- United States
- First Name
- Garrett
- Vehicle(s)
- 2016 Mustang GT
- Thread starter
- #16
Little backstory first that I haven't full touched on in this post. This all started because of a terrible noise (that has progressively gotten worse) that the car developed at 2k rpm. Goes from 2k to around 3500-4000 in pretty much every gear except 6th, and is only starts to present after the engine has warmed up.Is your goal just to freshen things up a bit and add goodies while in there? I didn’t see valve springs on your list. Maybe they’re not needed for your application. I do hear you on the “while I’m in there“ mentality. That’s what I Did too.
When you get to tearing things down, would you please get some good pics of your intake runners? I want to see how they look with the number of miles you’ve logged on the engine.
Video of noise from inside car:
Video from outside:
Took it to a mechanic friend, who did not have time to pull apart the engine, but tried his best to diagnose. He said he thought it was the IMRCs. I have a GT350 IM that I installed maybe a year ago, and have put less than 8k miles on. So, pulled the IM off the car, inspected the runners, and they looked perfectly fine. No play in them at all. Went ahead and locked them out, but the noise did not go away unfortunately. I also went from running 5W-20 to 5W-30 oil w/ Ceratec and it made no difference.
This lead me to pulling off the passenger side valve cover, and finding slack in the chain (from the video a couple of posts up), and now here we are.
I have had plans to throw on a supercharger, and have been slowly building towards that. Was going to do headers next, but this has unfortunately gotten in the way. The goal has been now to fix the noise I have been dealing with, but now that I know it has something to do with the chains, I want to go ahead and replace all the timing related components while I am in there, as well as upgrade the OPG and CSS which I know (at least the OPG) have issues. I want to keep the car a street build, at least that's the current plan. The car isn't daily driven so the plan may change eventually. I will likely after putting a supercharger on throw supercharger cams on, and potentially lock out the phasers, but that is so far out at the moment I haven't put much thought into it.
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