Damaged Downpipe-Repairable? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

allntrlundrgrnd · 08-30-2010, 08:45 PM

I blew up the flex section of this megan downpipe months ago.

My question is: Can the flex section be repaired? Or can it just be cut out with a section welded in? I ask because If I get it fixed, I will have some of the vertical section cut out and rewelded as well because it sat so damn low on my car. I have a greddy dp on it now and exhaust STILL hits everything.

I'm debating having a muffler shop do this, so exhaust guru's please chime in!

pics for reference:

BoostSlideWayz · 08-30-2010, 09:01 PM

3" X 6" Stainless Steel Exhaust Muffler Flex Pipe: eBay Motors (item 270624572045 end time Sep-19-10 15:00:00 PDT)

!Zar! · 08-30-2010, 09:46 PM

If your car is slapping it on the ground, there pretty much isn't any point to having a flex section in the first place.

Not unless you have it going vertical like the Powered By Max one.

allntrlundrgrnd · 08-31-2010, 12:48 PM

Not really, just scraping. I'm not really worried about having a flex section, just an exhaust that doesn't hang so far under the frame rails.

kalypso123 · 09-01-2010, 02:23 AM

Id imagine the flex piece makes it sag more, why not slice it out and put in straight pipe.

gearhead55 · 09-01-2010, 10:01 PM

I'm wondering about a flex pipe in the downpipe section too. Right now i have 3 inch piping with no flex pipe at all. My question is will scraping put pressure on the turbo or exhaust manifold and cause problems?

jchrisw85 · 09-02-2010, 09:10 AM

i have the same downpipe but with a trust power extreme cat back. it used to scrape all over the place until i changed my exhaust bushings to polyurethane. they were super hard to put on lol

lmao or get higher profile tires.

Maiku240sxS14 · 09-02-2010, 09:26 AM

Also interested in this...as I blew the flex pipe too. I would rather have the flex pipe in than a straight pipe.

I was thinking of just purchasing another dp w/ a flex pipe on it.

jchrisw85 · 09-02-2010, 09:30 AM

Quote:

Originally Posted by gearhead55

I'm wondering about a flex pipe in the downpipe section too. Right now i have 3 inch piping with no flex pipe at all. My question is will scraping put pressure on the turbo or exhaust manifold and cause problems?

i had constant exhaust leaks coming from the downpipe and exhaust manifold. just bc the downipipe was scraping. 3 inch piping is lower than the frame rails.
my setup was tomei exhaust mani, greddy turbo elbow, t28, greddy downpipe, trust power extreme catback
every 6 months or so i would start to get an exhaust leak. i must have fixed it at least 4 times before i sold the old s13.

s14l0v3r · 09-02-2010, 09:59 AM

Quote:

Originally Posted by kalypso123

Id imagine the flex piece makes it sag more, why not slice it out and put in straight pipe.

Exactly what I did with mine, had an ebay dowpipe and it cracked right where the flex pipe started. Just remember if you go with this to add a little more pipe to compensate for the flex. Measured and cut the exact length of pipe and now exhaust is a little short =/

Tearlessj · 09-02-2010, 10:02 AM

I have a "xs power" down pipe. It sits way up in the frame rail and sometimes even hit the floor board on rough bumps.

*fliprayzin240sx* · 09-03-2010, 12:28 AM

Yah, looking at that shot, looks like your exhaust hangers are letting it sag lower than its supposed to. Actually, are you using the hanger that hooks up to the transmission? If you're not, thats probably why it sags.

08-30-2010, 08:45 PM	#1
allntrlundrgrnd Nissanaholic! Join Date: Jul 2007 Location: Portland, OR Posts: 2,483 Trader Rating: (17) Rides Gallery: allntrlundrgrnd Feedback Score: 17 reviews	Damaged Downpipe-Repairable? I blew up the flex section of this megan downpipe months ago. My question is: Can the flex section be repaired? Or can it just be cut out with a section welded in? I ask because If I get it fixed, I will have some of the vertical section cut out and rewelded as well because it sat so damn low on my car. I have a greddy dp on it now and exhaust STILL hits everything. I'm debating having a muffler shop do this, so exhaust guru's please chime in! pics for reference: __________________ https://www.instagram.com/kook_180sx

08-30-2010, 09:01 PM	#2
BoostSlideWayz Nissanaholic! Join Date: Sep 2008 Location: Lebec Age: 36 Posts: 1,686 Trader Rating: (1) Feedback Score: 1 reviews	3" X 6" Stainless Steel Exhaust Muffler Flex Pipe: eBay Motors (item 270624572045 end time Sep-19-10 15:00:00 PDT) __________________ 1994 toyota supra...... n-a D= 1992 nissan 240sx KA24E-T fully Built =D

08-30-2010, 09:46 PM	#3
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	If your car is slapping it on the ground, there pretty much isn't any point to having a flex section in the first place. Not unless you have it going vertical like the Powered By Max one. __________________

08-31-2010, 12:48 PM	#4
allntrlundrgrnd Nissanaholic! Join Date: Jul 2007 Location: Portland, OR Posts: 2,483 Trader Rating: (17) Rides Gallery: allntrlundrgrnd Feedback Score: 17 reviews	Not really, just scraping. I'm not really worried about having a flex section, just an exhaust that doesn't hang so far under the frame rails. __________________ https://www.instagram.com/kook_180sx

09-02-2010, 10:02 AM	#11
Tearlessj Nissanaholic! Join Date: Feb 2007 Location: Memphis Age: 33 Posts: 1,907 Trader Rating: (6) Feedback Score: 6 reviews	I have a "xs power" down pipe. It sits way up in the frame rail and sometimes even hit the floor board on rough bumps. __________________ Nagasaki Motors Friends help you move. Real friends help you move bodies.

09-01-2010, 02:23 AM	#5
kalypso123 (ノಠ益ಠ)ノ彡 Join Date: Apr 2008 Location: New York, NY Posts: 2,853 Trader Rating: (2) Feedback Score: 2 reviews	Id imagine the flex piece makes it sag more, why not slice it out and put in straight pipe.

09-01-2010, 10:01 PM	#6
gearhead55 Zilvia FREAK! Join Date: Jun 2008 Location: VENICE, CA Posts: 1,363 Trader Rating: (4) Feedback Score: 4 reviews	I'm wondering about a flex pipe in the downpipe section too. Right now i have 3 inch piping with no flex pipe at all. My question is will scraping put pressure on the turbo or exhaust manifold and cause problems?

09-02-2010, 09:10 AM	#7
jchrisw85 Leaky Injector Join Date: Aug 2010 Location: Clifton, NJ Age: 39 Posts: 54 Trader Rating: (0) Feedback Score: 0 reviews	i have the same downpipe but with a trust power extreme cat back. it used to scrape all over the place until i changed my exhaust bushings to polyurethane. they were super hard to put on lol lmao or get higher profile tires.

09-02-2010, 09:26 AM	#8
Maiku240sxS14 Nissanaholic! Join Date: Jul 2007 Location: LA Posts: 2,019 Trader Rating: (37) Feedback Score: 37 reviews	Also interested in this...as I blew the flex pipe too. I would rather have the flex pipe in than a straight pipe. I was thinking of just purchasing another dp w/ a flex pipe on it.

09-03-2010, 12:28 AM	#12
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Yah, looking at that shot, looks like your exhaust hangers are letting it sag lower than its supposed to. Actually, are you using the hanger that hooks up to the transmission? If you're not, thats probably why it sags. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!