Please help, Weird Sound After Clutch Replacement

[dinfern22]

Hey guys,

Yesterday I picked up my car from the auto shop after having the clutch and flywheel replaced with new OEM parts, along with fresh transmission fluid.

Since getting it back, I’ve noticed a weird noise when I quickly get on the throttle at higher RPMs.

It doesn’t happen every time, but fairly often — usually when I’m in gear around 3,500 RPM and press the gas quickly, I hear a sort of “chh” sound. The sound it hard to explain, almost the the sound of scissors cutting.

And I don’t know if I’m going crazy, but I feel like the exhaust startup sound is a bit muffled.

Any ideas what this could be?

https://imgur.com/a/BkKg03O

[dinfern22]

[Muskoka800]

Did you follow any break-in procedure for the new clutch?
I installed an aftermarket clutch which included explicate first 500 mile break-in instructions. Basically gentle behavior which was fine as I was also breaking in a new built short block.

[dinfern22]

Originally Posted by Muskoka800

Did you follow any break-in procedure for the new clutch?
I installed an aftermarket clutch which included explicate first 500 mile break-in instructions. Basically gentle behavior which was fine as I was also breaking in a new built short block.

I wasn’t told by the shop but I did not own research and I’m trying to stay under 4k RPM shifting until 400 miles.

But my concern is the sound that I hear when I stab the throttle, usually at higher rpm in gear.

[Spuds]

Hard to tell from the video, but mine has done something like that from day-1, 13 years ago. For me, it's the throttle pulling in a bunch of air quickly, like breathing in through pursed lips. Not sure if yours is different or if you are just now noticing.

[DarkPira7e]

Originally Posted by Spuds

Hard to tell from the video, but mine has done something like that from day-1, 13 years ago. For me, it's the throttle pulling in a bunch of air quickly, like breathing in through pursed lips. Not sure if yours is different or if you are just now noticing.

This is what I was thinking. Maybe the shop caused a change in the intake and OP is now hear the brief intake noise almost all of my cars

[dinfern22]

Originally Posted by Spuds

Hard to tell from the video, but mine has done something like that from day-1, 13 years ago. For me, it's the throttle pulling in a bunch of air quickly, like breathing in through pursed lips. Not sure if yours is different or if you are just now noticing.

Hmm, you could be right. I initially thought that it might be something with the exhaust, and they didn’t properly tighten the bolts etc. but it doesn’t happen every time.

[Spuds]

Originally Posted by dinfern22

Hmm, you could be right. I initially thought that it might be something with the exhaust, and they didn’t properly tighten the bolts etc. but it doesn’t happen every time.

On mine it usually happens when rev matching a downshift. You can always have someone blip your throttle while you stand next to the open hood to try to localize the sound.