KA24e Header advice - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Treefish · 01-31-2009, 09:35 AM

After taking collection of my 1989 KA24e 240sx, I see that the welded exhaust system is welded right to the header, and no catalytic converter in sight. So rather can slicing that off and going with a welded cat, I'd rather change to a bolted system.

So basically, I need a new header and the piping that leads to the cat. All I have found so far are these.

Pacesetter Headers for 89-90
PartsTrain.com - Hard to Find Auto Parts and Truck Parts - Headers

Is that all I need to get to where the cat should be? Or is there more piping I need. Any advice appreciated, I'm new to this engine and 240s in general. I really need this thing to pass emmissions AND not sound like crap, so getting a cat on my system is crucial. Already have an HKS cat-back exhaust waiting.

jeremy242 · 01-31-2009, 10:47 AM

obx on ebay are cheaper i think. I am running one of those and no problem. I have mine wrapped and i have had no issues with cracking or anyhing. Knock on wood.

Treefish · 01-31-2009, 11:09 AM

Is this better? Any clearance issues you reckon? Because I think the SOHC header is shorter than that, with a pipe added to it. This looks like it comes with it already welded up.

http://cgi.ebay.com/ebaymotors/Parts-Accessories_Car-Truck-Parts-Accessories__OBX-Exhaust-Manifold-Headers-89-91-Nissan-240SX-S13-SOH_W0QQitemZ160309818902QQddnZPartsQ20Q26Q20Acces soriesQQadiZ2865QQddiZ2811QQadnZCarQ20Q26Q20TruckQ 20PartsQ20Q26Q20AccessoriesQQcmdZViewItemQQptZMoto rs_Car_Truck_Parts_Accessories?hash=item1603098189 02&_trksid=p4506.c0.m245&_trkparms=72%3A543%7C65%3 A12%7C39%3A1%7C240%3A1318

Treefish · 01-31-2009, 11:39 AM

Went with the obx. Gonna see how this works out. Unfortunately the exhaust I have is 85mm pipe, and the cat is 2.5''. I'm told the flange should still be the same so it should still fit.

projectRDM · 01-31-2009, 02:59 PM

That will work fine. The cat will bolt to the end of the header, the exhaust to the cat.

juvi22003 · 12-26-2013, 12:11 PM

I heard some bad reviews on the OBX, how was it? I was thinking about the Pacesetter....

01-31-2009, 09:35 AM	#1
Treefish Zilvia Member Join Date: Jan 2009 Location: Atlanta Posts: 265 Trader Rating: (6) Feedback Score: 6 reviews	KA24e Header advice After taking collection of my 1989 KA24e 240sx, I see that the welded exhaust system is welded right to the header, and no catalytic converter in sight. So rather can slicing that off and going with a welded cat, I'd rather change to a bolted system. So basically, I need a new header and the piping that leads to the cat. All I have found so far are these. Pacesetter Headers for 89-90 PartsTrain.com - Hard to Find Auto Parts and Truck Parts - Headers Is that all I need to get to where the cat should be? Or is there more piping I need. Any advice appreciated, I'm new to this engine and 240s in general. I really need this thing to pass emmissions AND not sound like crap, so getting a cat on my system is crucial. Already have an HKS cat-back exhaust waiting.

01-31-2009, 02:59 PM	#5
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 47 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	That will work fine. The cat will bolt to the end of the header, the exhaust to the cat. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

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01-31-2009, 10:47 AM	#2
jeremy242 Leaky Injector Join Date: Aug 2007 Location: Oviedo, Fl Age: 39 Posts: 143 Trader Rating: (1) Feedback Score: 1 reviews	obx on ebay are cheaper i think. I am running one of those and no problem. I have mine wrapped and i have had no issues with cracking or anyhing. Knock on wood.

01-31-2009, 11:09 AM	#3
Treefish Zilvia Member Join Date: Jan 2009 Location: Atlanta Posts: 265 Trader Rating: (6) Feedback Score: 6 reviews	Is this better? Any clearance issues you reckon? Because I think the SOHC header is shorter than that, with a pipe added to it. This looks like it comes with it already welded up. http://cgi.ebay.com/ebaymotors/Parts-Accessories_Car-Truck-Parts-Accessories__OBX-Exhaust-Manifold-Headers-89-91-Nissan-240SX-S13-SOH_W0QQitemZ160309818902QQddnZPartsQ20Q26Q20Acces soriesQQadiZ2865QQddiZ2811QQadnZCarQ20Q26Q20TruckQ 20PartsQ20Q26Q20AccessoriesQQcmdZViewItemQQptZMoto rs_Car_Truck_Parts_Accessories?hash=item1603098189 02&_trksid=p4506.c0.m245&_trkparms=72%3A543%7C65%3 A12%7C39%3A1%7C240%3A1318

01-31-2009, 11:39 AM	#4
Treefish Zilvia Member Join Date: Jan 2009 Location: Atlanta Posts: 265 Trader Rating: (6) Feedback Score: 6 reviews	Went with the obx. Gonna see how this works out. Unfortunately the exhaust I have is 85mm pipe, and the cat is 2.5''. I'm told the flange should still be the same so it should still fit.

12-26-2013, 12:11 PM	#6
juvi22003 Zilvia Member Join Date: Dec 2013 Location: FL Posts: 214 Trader Rating: (0) Feedback Score: 0 reviews	I heard some bad reviews on the OBX, how was it? I was thinking about the Pacesetter....