stupid exhaust leak question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SR240DET · 01-14-2006, 12:04 AM

when you have a leak from the manifold to the head its got that tapping sound right? or would it not matter?

i just installed a header i got from a friend and there is this loud exhaust leak i cant find... sounds like its blowing through the thin metal gasket on the cat. sorry for the stupid question flame away...

also is there a silicon sealant for exhaust or would any high temp stuff work? its just for testing out certaint areas..

dvdevo · 01-14-2006, 03:32 AM

my ka had major exhaust leaks from the manifold and yes it made a clicking like noise..

g6civcx · 01-14-2006, 08:06 AM

A quick way to check for exhaust leak is to stuff a rag into the tailpipe and completely plug it up. If the car pushes your rag out or stall, you don't have a leak. If the car is running just fine, then the exhaust is leaking from somewhere.

You probably have a leaky gasket or cracked manifold. There really isn't anything you can put on. You just have to replace the faulty part.

***S14DB*** · 01-14-2006, 09:10 AM

Get new gaskets and spray this crap on the surfaces before you bolt it together:
http://www.permatex.com/products/pro...&item_no=80696

papershot · 01-14-2006, 10:54 AM

that permatex copper stuff works good...but be warned. its kinda a bitch to scrape that crap off if you ever take the parts off again since you have to reapply it. scraping it off my testpipe today, meh..

***S14DB*** · 01-14-2006, 01:50 PM

Razor Scraper FTW. The paste really sucks dick. But I find the spray easy to take off with a razor.

...and you're just going to spray more on.

SR240DET · 01-14-2006, 11:36 PM

nice... thanks for the help guys

01-14-2006, 12:04 AM	#1
SR240DET Zilvia FREAK! Join Date: Mar 2002 Location: orida Posts: 1,490 Trader Rating: (0) Feedback Score: 0 reviews	stupid exhaust leak question when you have a leak from the manifold to the head its got that tapping sound right? or would it not matter? i just installed a header i got from a friend and there is this loud exhaust leak i cant find... sounds like its blowing through the thin metal gasket on the cat. sorry for the stupid question flame away... also is there a silicon sealant for exhaust or would any high temp stuff work? its just for testing out certaint areas..

01-14-2006, 09:10 AM	#4
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Get new gaskets and spray this crap on the surfaces before you bolt it together: http://www.permatex.com/products/pro...&item_no=80696 __________________ Comments should be taken as Opinions not as Statements of Fact

01-14-2006, 01:50 PM	#6
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Razor Scraper FTW. The paste really sucks dick. But I find the spray easy to take off with a razor. ...and you're just going to spray more on. __________________ Comments should be taken as Opinions not as Statements of Fact

01-14-2006, 03:32 AM	#2
dvdevo Zilvia FREAK! Join Date: Jul 2003 Location: cali Posts: 1,469 Trader Rating: (0) Feedback Score: 0 reviews	my ka had major exhaust leaks from the manifold and yes it made a clicking like noise..

01-14-2006, 08:06 AM	#3
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	A quick way to check for exhaust leak is to stuff a rag into the tailpipe and completely plug it up. If the car pushes your rag out or stall, you don't have a leak. If the car is running just fine, then the exhaust is leaking from somewhere. You probably have a leaky gasket or cracked manifold. There really isn't anything you can put on. You just have to replace the faulty part.

01-14-2006, 10:54 AM	#5
papershot Zilvia Junkie Join Date: May 2004 Location: CT Posts: 368 Trader Rating: (0) Feedback Score: 0 reviews	that permatex copper stuff works good...but be warned. its kinda a bitch to scrape that crap off if you ever take the parts off again since you have to reapply it. scraping it off my testpipe today, meh..

01-14-2006, 11:36 PM	#7
SR240DET Zilvia FREAK! Join Date: Mar 2002 Location: orida Posts: 1,490 Trader Rating: (0) Feedback Score: 0 reviews	nice... thanks for the help guys