Ka24e exhaust manifold upgrade? - Infamous Nissan

SiveDrafely · 03-16-2019, 01:58 PM

Eventually I'll be taking out the motor from my 94 hb 2wd for a teardown and refresh. I was wondering if getting a new exhaust manifold and full exhaust (rusted out) would add any power gain? Would a 240sx ka24e manifold fit the truck ka? The truck is just a dd, i don't want a loud truck and still decent mpg. If stock is best, I'll just stick to that. I saw this for the 240sx ka: https://www.protuninglab.com/hds-ns13.html
Thanks for the info.

Deerhurst · 03-16-2019, 02:28 PM

You might be able to get a couple HP from a header. A header will likely change the exhaust note a little but with a nice quiet muffler it shouldn't be much if any louder. Headers work best when used to support other mods and by it's self it may not make much of a difference. Or it could make a noticeable difference. All depends on what else you do.

SiveDrafely · 03-16-2019, 08:47 PM

Any recommendations for headers? That link is currently out of stock. The only concern for using 240 ka24e headers (if applicable) is the routing of them down under the cab. Not sure how it compares to one another.

dvdswan · 03-17-2019, 09:28 PM

https://www.4x4parts.com/c-1044799-n...-hardbody.html

Datsunbox · 03-19-2019, 09:18 PM

They make headers for the d21 https://www.amazon.com/nissan-hardbo...ardbody+header

Mazdaspeed6 · 04-20-2019, 06:14 PM

I have heard freeing up the exhaust on these trucks frees up some ponies but if it isnt a significant amount im not sure its worth it. I myself have a 97 hardbody so I have to work around two 02 sensors. For me a thought was to do a header and 2 1/4 exhaust from there back with a thrush muffler ( sounds very similar to a flowmaster at half the price ) and then just ad a 02 bung for the down stream 02 sensor

03-16-2019, 01:58 PM	#1
SiveDrafely Join Date: May 2016 Location: Florida Posts: 11 Vehicle: 1994 Nissan Hardbody Thanks: 0 Thanked 0 Times in 0 Posts	Ka24e exhaust manifold upgrade? Eventually I'll be taking out the motor from my 94 hb 2wd for a teardown and refresh. I was wondering if getting a new exhaust manifold and full exhaust (rusted out) would add any power gain? Would a 240sx ka24e manifold fit the truck ka? The truck is just a dd, i don't want a loud truck and still decent mpg. If stock is best, I'll just stick to that. I saw this for the 240sx ka: https://www.protuninglab.com/hds-ns13.html Thanks for the info.

03-16-2019, 02:28 PM	#2
Deerhurst 4/86 SE-V6 2 tone 4x4 HB Join Date: Apr 2013 Location: Oregon Posts: 6,145 Vehicle: 1986.5 Hardbody Thanks: 806 Thanked 687 Times in 631 Posts	You might be able to get a couple HP from a header. A header will likely change the exhaust note a little but with a nice quiet muffler it shouldn't be much if any louder. Headers work best when used to support other mods and by it's self it may not make much of a difference. Or it could make a noticeable difference. All depends on what else you do. __________________ 1986.5 SE-V6 4X4 D21 Hardbody Pacesetter Long Tube Headers Morimoto Mini D2S HID Projectors and Hella 500s VG33i

03-17-2019, 09:28 PM	#4
dvdswan Super Moderator Join Date: Mar 2009 Location: Port Orchard, WA Posts: 4,832 Vehicle: 96 HB Thanks: 159 Thanked 663 Times in 586 Posts	https://www.4x4parts.com/c-1044799-n...-hardbody.html __________________ Dave 96 HB XE SAS'd D44 3-link on 35s http://www.cardomain.com/ride/2618002

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03-16-2019, 08:47 PM	#3
SiveDrafely Join Date: May 2016 Location: Florida Posts: 11 Vehicle: 1994 Nissan Hardbody Thanks: 0 Thanked 0 Times in 0 Posts	Any recommendations for headers? That link is currently out of stock. The only concern for using 240 ka24e headers (if applicable) is the routing of them down under the cab. Not sure how it compares to one another.

03-19-2019, 09:18 PM	#5
Datsunbox Join Date: Jun 2018 Location: FL Posts: 46 Vehicle: Nissan D21(1992) Nissan D22(2003) Thanks: 2 Thanked 8 Times in 7 Posts	They make headers for the d21 https://www.amazon.com/nissan-hardbo...ardbody+header

04-20-2019, 06:14 PM	#6
Mazdaspeed6 Join Date: Nov 2018 Location: Oregon Age: 31 Posts: 199 Vehicle: 1997 base model Hardbody Thanks: 2 Thanked 17 Times in 16 Posts	I have heard freeing up the exhaust on these trucks frees up some ponies but if it isnt a significant amount im not sure its worth it. I myself have a 97 hardbody so I have to work around two 02 sensors. For me a thought was to do a header and 2 1/4 exhaust from there back with a thrush muffler ( sounds very similar to a flowmaster at half the price ) and then just ad a 02 bung for the down stream 02 sensor