Laurel making strange sounds.

[Fastazfuk]

i have a c34 20e auto laurel that runs and drives well but around 60-70ks a god awful sound starts and doesn’t go away until i slow back down to 50ks.

sounds like a really high pitched squeel. sounds like it’s coming from the dash or the break booster? 
breaks work fine and I disconnected the dash cluster to see if it went away but it did not. Sprayed crc on everything, checked all my belts and pullys for play. Doesnt use fluids so not sure where to look next. Thinking it could be something in the dash sounds alot louder than a sqeeky belt and closer but not sure what it could be any ideas?

I have had a similar sound coming from a skyline dash that had a broken rev gauge but not as loud. Its a constant squeal doesn't get louder and is painfully loud 

[Shoota_77]

Could it be an exhaust manifold leak?  They can tend to be quite loud and only at higher revs.  check your exhaust manifold studs to see if any have snapped off or if you can see any sooty stains around the gasket.

Other than that, see if you can record a video of the sound on your phone and post it here so we can hear it.  Very hard to diagnose until we know what it sounds like.

[GTSBoy]

Grab a couple of metres of rubber hose to use as a stethoscope and someone to use it while you drive. Get them to poke one end of it up under the dash where you think the noise is coming from and see if they can confirm/deny the location and perhaps narrow it down.

[Ben C34]

That's a bot response surely

[GTSBoy]

1 hour ago, Ben C34 said:

That's a bot response surely

Yeah, that's the GPT 3 chatbot that I've been bitching about and reported every one of its posts that I've seen so far. They must be destroyed.