stock s14/s13 ka24de downpipe interchangeable with s13 sr downpipe? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Indolent · 05-26-2006, 08:46 PM

from my reasearch, s13/s14 downpipes/headers are interchangeable as long as you use the correct downpipe/egr, just the catback is different

basically what i'm asking is if i can use an s13 sr20det downpipe on my s14 headers, the flanges are the same, and they look close to being interchangeable but i am not sure if they're like a hair or so off from actually being swappable

IAM_SO_sLOw · 05-27-2006, 12:59 AM

yeah you should be.... lol try it...cant hurt to try..

KOUKI KA-T · 05-27-2006, 08:45 AM

They aren't exactly the same. The end that bolts to the header (or elbow on an SR) is about an inch shorter on the SR downpipe. (or it could be the bottom of the KA header is a little higher than where the bottom of the o2 elbow is on the SR)
Either way, with the stock KA mounts I was able to bolt a GReddy downpipe up in my KA, but once I put the NIsmo mounts in there was no more sag and I could no longer bolt it up.

projectRDM · 05-27-2006, 11:21 AM

Plus the rear flange is clocked just a hair. Using a catalytic converter with floating flanges it will bolt up perfect, otherwise the catback section will sit crooked.
This only works when replacing the S14 downpipe, the S13 downpipe is a 2 into 1 merge collector.

05-26-2006, 08:46 PM	#1
Indolent Zilvia FREAK! Join Date: Jun 2005 Location: So. Cal, Riverside Area Posts: 1,110 Trader Rating: (3) Feedback Score: 3 reviews	stock s14/s13 ka24de downpipe interchangeable with s13 sr downpipe? from my reasearch, s13/s14 downpipes/headers are interchangeable as long as you use the correct downpipe/egr, just the catback is different basically what i'm asking is if i can use an s13 sr20det downpipe on my s14 headers, the flanges are the same, and they look close to being interchangeable but i am not sure if they're like a hair or so off from actually being swappable

05-27-2006, 08:45 AM	#3
KOUKI KA-T Zilvia FREAK! Join Date: Feb 2003 Location: Portland, Maine Posts: 1,085 Trader Rating: (0) Feedback Score: 0 reviews	They aren't exactly the same. The end that bolts to the header (or elbow on an SR) is about an inch shorter on the SR downpipe. (or it could be the bottom of the KA header is a little higher than where the bottom of the o2 elbow is on the SR) Either way, with the stock KA mounts I was able to bolt a GReddy downpipe up in my KA, but once I put the NIsmo mounts in there was no more sag and I could no longer bolt it up. __________________ My car has been sold

05-27-2006, 12:59 AM	#2
IAM_SO_sLOw Zilvia FREAK! Join Date: Apr 2004 Location: west covina Posts: 1,164 Trader Rating: (5) Feedback Score: 5 reviews	yeah you should be.... lol try it...cant hurt to try..

05-27-2006, 11:21 AM	#4
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Plus the rear flange is clocked just a hair. Using a catalytic converter with floating flanges it will bolt up perfect, otherwise the catback section will sit crooked. This only works when replacing the S14 downpipe, the S13 downpipe is a 2 into 1 merge collector.