Greddy T518Z Strange Ticking Noise - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

pillbox · 11-10-2019, 09:30 PM

Hey all, I just recently installed a brand new Greddy T518z turbo kit. I took my sweet time to make sure everything was mechanically sound.

There is a loud ticking noise that can be heard when the car is accelerating under load. The ticking speeds up as the engine speed increases. It becomes hard to hear as the engine speed is above 3.5k since the turbo and engine sound overwhelms it. I thought it was an exhaust leak, but both a shop and I couldn't find any leaks in the exhaust system.

I've read a ton of threads and most of them seem to have found the header gasket leaking. I've visually inspected the gaskets without taking the exhaust manifold off, and no soot building is found anywhere, on any exhaust flanges for that matter. I'm wondering if anyone has any suggestions?

[ame]https://www.youtube.com/watch?v=FvapnUI-TUg[/ame]

[ame]https://www.youtube.com/watch?v=aD8zHj7WuwM[/ame]

OzzyGT86 · 11-11-2019, 06:20 AM

Does it happen while not in gear? For example being in neutral and just climbing the revs?

mwiech · 11-11-2019, 09:21 AM

I had the same exact ticking noise and it drove me crazy trying to figure it out. I only noticed it after going FI. Turns out it was the stock injectors and fuel pump. Once I got those upgraded the noise went away completely. If you already have upgraded injectors/fuel pump then I don’t know.

pillbox · 11-12-2019, 11:51 PM

Quote:

Originally Posted by OzzyGT86

Does it happen while not in gear? For example being in neutral and just climbing the revs?

I'm able to get it to happen when in neutral but only with a lot of throttle application. Typically, I can hear it during heel-toe.

Quote:

Originally Posted by mwiech

I had the same exact ticking noise and it drove me crazy trying to figure it out. I only noticed it after going FI. Turns out it was the stock injectors and fuel pump. Once I got those upgraded the noise went away completely. If you already have upgraded injectors/fuel pump then I don’t know.

That's really weird, I wonder why going FI creates this sound, because I definitely didn't hear it when NA! I'm still on stock injectors and pump.

11-10-2019, 09:30 PM	#1
pillbox Member Join Date: Nov 2013 Drives: ZC6 Location: BC, Canada Posts: 25 Thanks: 11 Thanked 16 Times in 12 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Greddy T518Z Strange Ticking Noise Hey all, I just recently installed a brand new Greddy T518z turbo kit. I took my sweet time to make sure everything was mechanically sound. There is a loud ticking noise that can be heard when the car is accelerating under load. The ticking speeds up as the engine speed increases. It becomes hard to hear as the engine speed is above 3.5k since the turbo and engine sound overwhelms it. I thought it was an exhaust leak, but both a shop and I couldn't find any leaks in the exhaust system. I've read a ton of threads and most of them seem to have found the header gasket leaking. I've visually inspected the gaskets without taking the exhaust manifold off, and no soot building is found anywhere, on any exhaust flanges for that matter. I'm wondering if anyone has any suggestions? [ame]https://www.youtube.com/watch?v=FvapnUI-TUg[/ame] [ame]https://www.youtube.com/watch?v=aD8zHj7WuwM[/ame] __________________ 2015 Subaru ZC6 BRZ SPC Front Camber Bolts - PMU Club Racer Advance - GT Radial Champrio SX2 215/45/17 - HKS Type-S Oil Cooler - Verus Engineering Fuel Starvation Door Last edited by pillbox; 11-12-2019 at 11:53 PM.

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11-11-2019, 06:20 AM	#2
OzzyGT86 Senior Member Join Date: Dec 2014 Drives: Ultramarine GT86 Location: Downey CA Posts: 447 Thanks: 34 Thanked 35 Times in 29 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Does it happen while not in gear? For example being in neutral and just climbing the revs?

11-11-2019, 09:21 AM	#3
mwiech Junior Member Join Date: Mar 2019 Drives: BRZ Location: NYC Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I had the same exact ticking noise and it drove me crazy trying to figure it out. I only noticed it after going FI. Turns out it was the stock injectors and fuel pump. Once I got those upgraded the noise went away completely. If you already have upgraded injectors/fuel pump then I don’t know.

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