Is it illegal to swap a ka24de into an 89 240sx? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AN89HATCH · 11-07-2003, 11:00 PM

Im lookig into purchasing a ka24de for my 89 240 but sice its a dohc and my original engine is a sohc is this swap going to be legal?Ive heard you can not swap dohc engines into cars that where originally equipet with sohc, u i caed dmv andthey said aslong as the yea of the engine is newer than the year of the car its ok, so im sorta confused.

BadMoJo · 11-07-2003, 11:09 PM

Its legal. there are a few things you neeed to do if your in cAil but i forget what they are. I am pretty drunk right now so i candkt quitre remeber. BUT it is leagal to do none the less!

AN89HATCH · 11-07-2003, 11:35 PM

hha thanks for the reply, i guss ill find out what i ave to do tommorow

WongFeiHung · 11-08-2003, 12:06 AM

What's illegal is putting a older motor into a newer chassis...

aeontony · 11-08-2003, 12:38 AM

Basically, all the smog equipment has to be hooked up-that's all.

thx247 · 11-08-2003, 05:34 PM

No its legal. You need to use all the original smog equipment on the DE motor, if its an OBDII motor you need to use the ODBII ECU, check engine light needs to work, diagnostic plug needs to work. Needs to pass smog test (smog II test so its on a dyno now) and a visual inspection at a BAR station where the ref (if you pass) will give you a sticker for the door jamb which says the car has a motor change, motor number etc.

I hope I'm not forgetting anything. You can find all the info on the DMV's website

andrave · 11-09-2003, 05:36 PM

its legal but putting OBDII in an S13 would be a pita.
I don't know anyone that has done it.
You could just toss the S13 intake manifold and such onto the 98 block and hope no one notices that the block's # doesn't match.

AN89HATCH · 11-09-2003, 07:31 PM

is the 91-93 240sx dohc engine an obd2 motor?

andrave · 11-09-2003, 10:17 PM

nope not till 96

BoroFabulous · 11-10-2003, 06:31 AM

Is the Diagnostic plug required to be working if the engine isn't obdii equipped, such as a 92' DE? I would like to know since i swapped in a DE from a 92' into my 89' fastback. I spliced the engine harness into the enginebay harness, the result of this being that the the consult(diagnostic plug of the s13's) doesn't work anymore. The last thing i want to be doing is paying $200 to illegally smog a fcking KA swap.

andrave · 11-10-2003, 10:37 AM

yeah everything has to work.
you must maintain ALL smog equipment from BOTH engines, and when it is redundant the standard defaults to the LATER engine.

11-07-2003, 11:00 PM	#1
AN89HATCH Zilvia Junkie Join Date: Oct 2003 Location: BAY AREA Posts: 393 Trader Rating: (0) Feedback Score: 0 reviews	Is it illegal to swap a ka24de into an 89 240sx? Im lookig into purchasing a ka24de for my 89 240 but sice its a dohc and my original engine is a sohc is this swap going to be legal?Ive heard you can not swap dohc engines into cars that where originally equipet with sohc, u i caed dmv andthey said aslong as the yea of the engine is newer than the year of the car its ok, so im sorta confused.

11-07-2003, 11:09 PM	#2
BadMoJo Nissanaholic! Join Date: Sep 2001 Location: San Luis Obispo, Ca Age: 43 Posts: 1,931 Trader Rating: (0) Feedback Score: 0 reviews	Its legal. there are a few things you neeed to do if your in cAil but i forget what they are. I am pretty drunk right now so i candkt quitre remeber. BUT it is leagal to do none the less! __________________ ----Gone----

11-07-2003, 11:35 PM	#3
AN89HATCH Zilvia Junkie Join Date: Oct 2003 Location: BAY AREA Posts: 393 Trader Rating: (0) Feedback Score: 0 reviews	hha thanks for the reply, i guss ill find out what i ave to do tommorow __________________ slide your ride.com

11-08-2003, 12:38 AM	#5
aeontony Zilvia Junkie Join Date: Jan 2003 Location: Norcal Posts: 303 Trader Rating: (0) Feedback Score: 0 reviews	Basically, all the smog equipment has to be hooked up-that's all. __________________ S14.5 for sale. Must move on with life...=( http://www.zilvia.net/f/showthread.php?t=56822 Au no wa wakare no hajime...

11-09-2003, 07:31 PM	#8
AN89HATCH Zilvia Junkie Join Date: Oct 2003 Location: BAY AREA Posts: 393 Trader Rating: (0) Feedback Score: 0 reviews	is the 91-93 240sx dohc engine an obd2 motor? __________________ slide your ride.com

11-08-2003, 12:06 AM	#4
WongFeiHung Zilvia Member Join Date: Jun 2003 Location: Dallas, TX Posts: 221 Trader Rating: (0) Feedback Score: 0 reviews	What's illegal is putting a older motor into a newer chassis...

11-08-2003, 05:34 PM	#6
thx247 Zilvia FREAK! Join Date: Jan 2003 Location: bay area Posts: 1,455 Trader Rating: (0) Feedback Score: 0 reviews	No its legal. You need to use all the original smog equipment on the DE motor, if its an OBDII motor you need to use the ODBII ECU, check engine light needs to work, diagnostic plug needs to work. Needs to pass smog test (smog II test so its on a dyno now) and a visual inspection at a BAR station where the ref (if you pass) will give you a sticker for the door jamb which says the car has a motor change, motor number etc. I hope I'm not forgetting anything. You can find all the info on the DMV's website

11-09-2003, 05:36 PM	#7
andrave BANNED Join Date: Apr 2002 Location: Burton WV Posts: 2,350 Trader Rating: (0) Feedback Score: 0 reviews	its legal but putting OBDII in an S13 would be a pita. I don't know anyone that has done it. You could just toss the S13 intake manifold and such onto the 98 block and hope no one notices that the block's # doesn't match.

11-09-2003, 10:17 PM	#9
andrave BANNED Join Date: Apr 2002 Location: Burton WV Posts: 2,350 Trader Rating: (0) Feedback Score: 0 reviews	nope not till 96

11-10-2003, 06:31 AM	#10
BoroFabulous Join Date: Oct 2003 Location: Sausalito, Marin County, Cally Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	Diagnostic Plug Is the Diagnostic plug required to be working if the engine isn't obdii equipped, such as a 92' DE? I would like to know since i swapped in a DE from a 92' into my 89' fastback. I spliced the engine harness into the enginebay harness, the result of this being that the the consult(diagnostic plug of the s13's) doesn't work anymore. The last thing i want to be doing is paying $200 to illegally smog a fcking KA swap. __________________ '89 SE coupe - Black Eibach Sportline springs KA24de swapped in ya, its a pos

11-10-2003, 10:37 AM	#11
andrave BANNED Join Date: Apr 2002 Location: Burton WV Posts: 2,350 Trader Rating: (0) Feedback Score: 0 reviews	yeah everything has to work. you must maintain ALL smog equipment from BOTH engines, and when it is redundant the standard defaults to the LATER engine.