CA18DE non turbo manifolds

Discuss topics related to the CA18DE and CA18DET series engines.
xtypical360aznx
Posts: 50
Joined: Sun Dec 10, 2006 4:58 am
Car: 89 Fastback w/ Redtop T28

Post

I'm about to buy a CA18DET powered Fastback 240sx and i live in washington seeing how turbos cant pass emissions around here. It may sound like a dumb question cause i'm not used to nissans but do they make non turbo'd CA18 exhaust manifolds. So i can take off the turbo run it through emissions then put it back on. and if so what do i have to do to readjust the car to being non-turbo other than just removing the turbo and exhaust stuff


pulsar gtr
Posts: 1221
Joined: Tue Sep 03, 2002 12:22 pm
Car: NISSAN VEHICLES
Contact:

Post

Having the turbo on or off, it really doesn't make a difference for emission, it is the air/fuel ratio that makes the difference, so don't even bother removing the turbo as it you will have the same results. The Ca18de has smaller injectors than the ca18det.

Not sure how you guys run your emission test in the USA, but here in Ottawa, Canada, they run the car at 40km/hr starting from 0km/hr and gradually bring it up to 40km/hr, so the turbo never kicks in at that kind of acceleration.

You need to adjust your air/fuel ratio and have a cat or two on your exhaust.

Good luck,

RafiPULSAR GTR

User avatar
davidricardo86
Posts: 604
Joined: Wed Sep 14, 2005 7:42 am
Car: 1992 Nissan 240SX SE

Post

xtypical360aznx wrote:I'm about to buy a CA18DET powered Fastback 240sx and i live in washington seeing how turbos cant pass emissions around here. It may sound like a dumb question cause i'm not used to nissans but do they make non turbo'd CA18 exhaust manifolds. So i can take off the turbo run it through emissions then put it back on. and if so what do i have to do to readjust the car to being non-turbo other than just removing the turbo and exhaust stuff
This isnt possible. The ca18det is a turbo engine and the ca18de is na. Obviously. Therefore they are different internally aswell as externally. This also wouldnt work because you would need different ECUs, and a few other things. Why not try and pass emissions with the stock KA and then swap the ca. Depending on the year of the vehicle, cars 95 and older will not have to do emissions in 2007.

ca18datsun510
Posts: 2050
Joined: Sat Aug 31, 2002 7:28 pm
Car: bmw 330i zhp, 91 infiniti m30, 89 240sx, 07 zx6r, 05 trx450r
Contact:

Post

davidricardo86 wrote:
This isnt possible. The ca18det is a turbo engine and the ca18de is na. Obviously. Therefore they are different internally aswell as externally. This also wouldnt work because you would need different ECUs, and a few other things. Why not try and pass emissions with the stock KA and then swap the ca. Depending on the year of the vehicle, cars 95 and older will not have to do emissions in 2007.
****, somebody better go tell that to my car thats running a ca18de on stock det management.

sideways danny
Posts: 348
Joined: Wed Jul 27, 2005 2:29 pm
Car: s13, CA18DET

Post

ca18datsun510 wrote:
****, somebody better go tell that to my car thats running a ca18de on stock det management.
and my mates which is half way through a supercharger conversion, running a stock DET ecu and an NA exhaust manifold

http://www.sxoc.com/vbb/showth...09472

User avatar
float_6969
Moderator
Posts: 17366
Joined: Mon Aug 26, 2002 1:55 pm
Car: CA18DET swapped 1995 Nissan 240sx (too many mods to list)
2015 SV Leaf w/QC & Bose (daily)
Location: Topeka, Kansas
Contact:

Post

Just make sure the car is in good tune. Throw some new plugs in it, change the O2 sensor, and make sure the car has a Cat on it. Advance auto has some crap that you add to the fuel that is supposed to guarantee that you pass emissions.

ca18datsun510
Posts: 2050
Joined: Sat Aug 31, 2002 7:28 pm
Car: bmw 330i zhp, 91 infiniti m30, 89 240sx, 07 zx6r, 05 trx450r
Contact:

Post

sideways danny wrote:
and my mates which is half way through a supercharger conversion, running a stock DET ecu and an NA exhaust manifold

http://www.sxoc.com/vbb/showth...09472
i have the same header as your friend and it wont fit my left hand drive

User avatar
c-rad
Posts: 2584
Joined: Sun Sep 19, 2004 5:10 pm
Car: 1991 Nissan 240SX w/CA18DET
Contact:

Post

davidricardo86 wrote:
This isnt possible. The ca18det is a turbo engine and the ca18de is na.
It's entirely possible. Disconnect the wastegate arm on your turbo and drive the car. Thats almost exactly how it would drive.
davidricardo86 wrote:Depending on the year of the vehicle, cars 95 and older will not have to do emissions in 2007.
Emissions testing varies from state to state. What may be the law in one state, isn't in another. For example, there is no emission testing at all in my county here in Florida.


Return to “CA18DE / CA18DET Forum”