'exhaust leak' sound at high rpms...ka24de? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

alkemyst · 07-08-2008, 06:10 PM

I have tightened up the exhaust, cat, and header, but still have a 'ticking' sound at 5k rpm or so. It sounds like an exhaust leak, but really I don't see how it can be.

Is this a normal sound for the KA24DE at high rpms?

It's an OBX header, 3" catco, and 5zigen 80mm pro racer a-spec if it matters.

Thanks

Å

Addicted2Kouki · 07-08-2008, 06:11 PM

explain the exhaust leak noise...

or a video could be good too

240=180 · 07-08-2008, 06:17 PM

is it a hiss...

are u using gaskets?

check for bent or cracked flanges

alkemyst · 07-08-2008, 06:32 PM

Quote:

Originally Posted by 240=180

is it a hiss...

are u using gaskets?

check for bent or cracked flanges

Gaskets are all good...there isn't a leak at any of the joints.

It sounds just like a ticking exhaust leak would though but only at very high rpms.

KADRIFTER · 07-08-2008, 06:37 PM

Are you sure the ticking is coming from the exhaust and not the head? Put your ear closer to the valve cover and listen again. I would expect a hiss from an exhaust leak.

240=180 · 07-08-2008, 06:41 PM

are you using a silencer?

check for exhaust leaks... use a rag and hold it over your muffler and listen for hissing or any other sounds

could also be a rattling hangar

alkemyst · 07-08-2008, 07:30 PM

Quote:

Originally Posted by KADRIFTER

Are you sure the ticking is coming from the exhaust and not the head? Put your ear closer to the valve cover and listen again. I would expect a hiss from an exhaust leak.

I can only really hear it when I am passing a wall or cars on my side. Only at higher rpms...

I am wondering if if may be valve noise...I did swap to a 248 cam on the intake.

I will have to find somewhere to rev it and listen tomorrow. Can't really do it at my house without pissing off my neighbors

alkemyst · 07-10-2008, 09:12 PM

seems to go away / be less noticable after a longer drive (my commute is only 4 miles each way).

I think I had read with an aftermarket exhaust the car can be raspy / noisy until warmed up. Not sure if that was about the 240SX or another car.

1989rps13 · 07-30-2008, 01:28 AM

Quote:

Originally Posted by KADRIFTER

Are you sure the ticking is coming from the exhaust and not the head? Put your ear closer to the valve cover and listen again. I would expect a hiss from an exhaust leak.

i have a question.. i have a ticking noise with my car on idle and people told me its an exhaust leak so my question is..

" is this coming most likely from the exhaust manifold gasket?"

los_inc · 07-30-2008, 01:31 AM

make sure it's not a heat shield rattling around at a certain RPM
-los

1989rps13 · 07-30-2008, 01:34 AM

Quote:

Originally Posted by los_inc

make sure it's not a heat shield rattling around at a certain RPM
-los

i hear it at idle its just a ticking noise and i think i may need a new gasket BUT the thing is my hood is jammed and i have been trying to get it open for the longest fucken time. Last time i fought with it trying to get the hood open i pulled out my hand all bloody n shit

07-08-2008, 06:10 PM	#1
alkemyst Zilvia Addict Join Date: Oct 2003 Location: Florida Age: 53 Posts: 868 Trader Rating: (0) Feedback Score: 0 reviews	'exhaust leak' sound at high rpms...ka24de? I have tightened up the exhaust, cat, and header, but still have a 'ticking' sound at 5k rpm or so. It sounds like an exhaust leak, but really I don't see how it can be. Is this a normal sound for the KA24DE at high rpms? It's an OBX header, 3" catco, and 5zigen 80mm pro racer a-spec if it matters. Thanks Å __________________ Now my Kensai, I curse you to be a Ronin and with the my remaining spirit I, beseech Chimata-No-Kami, to have you wander through time and distance lands, seeking a new master.

07-10-2008, 09:12 PM	#8
alkemyst Zilvia Addict Join Date: Oct 2003 Location: Florida Age: 53 Posts: 868 Trader Rating: (0) Feedback Score: 0 reviews	seems to go away / be less noticable after a longer drive (my commute is only 4 miles each way). I think I had read with an aftermarket exhaust the car can be raspy / noisy until warmed up. Not sure if that was about the 240SX or another car. __________________ Now my Kensai, I curse you to be a Ronin and with the my remaining spirit I, beseech Chimata-No-Kami, to have you wander through time and distance lands, seeking a new master.

07-30-2008, 01:31 AM	#10
los_inc Zilvia Addict Join Date: Apr 2006 Location: New Joisey Bro. Age: 40 Posts: 826 Trader Rating: (15) Feedback Score: 15 reviews	make sure it's not a heat shield rattling around at a certain RPM -los __________________

07-08-2008, 06:17 PM	#3
240=180 Zilvia Member Join Date: Jan 2008 Location: east bay Posts: 244 Trader Rating: (1) Feedback Score: 1 reviews	is it a hiss... are u using gaskets? check for bent or cracked flanges

07-08-2008, 06:37 PM	#5
KADRIFTER Join Date: Sep 2006 Location: Sacramento, CA Age: 42 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	Are you sure the ticking is coming from the exhaust and not the head? Put your ear closer to the valve cover and listen again. I would expect a hiss from an exhaust leak.

07-08-2008, 06:41 PM	#6
240=180 Zilvia Member Join Date: Jan 2008 Location: east bay Posts: 244 Trader Rating: (1) Feedback Score: 1 reviews	are you using a silencer? check for exhaust leaks... use a rag and hold it over your muffler and listen for hissing or any other sounds could also be a rattling hangar