J-spec RX7 engine swap

Ed R · 01-05-2010, 09:33 PM

Is there a difference between the engine harness of a 95 RHD and a 94 LHD RX7?

Will I have any issues swaping a RHD engine into a LHD car?

Rotary Inspired · 01-05-2010, 11:00 PM

Use your wiring harness and solenoids from the U.S. Spec car and you will be ok. I will warn you that Jspec motors are junk yard motors. Its hit and miss if you are getting a good one or not. My RE had sat long enough in the yard that the front plate o ring lands had rusted through. Motor looked brand new on the outside. It was supposed to have 40K on it. Had I dropped it in and started the motor it would have overheated and ruined the rest of it. Hope this helps.

Ed R · 01-06-2010, 09:09 AM

The original wiring harness and silenoids were trashed in an engine fire from the previous owner. I am trying to resurrect this car and make it nice again. I have just received my J-spec motor and plan to tear it apart for all of the parts that were ruined in the fire. I also plan to have the block rebuilt so that I can have some reliability. The J-spec was removed from the car in August 09 so it hasn't sat very long. Wish me luck!

Zweetz32 · 01-08-2010, 12:15 AM

if you're gonna use the rhd harness on the lhd car, you're gonna need to do two things. First rewire the x05 on the EM harness to make it fit and match the connector on the front harness. Front harness x05 is 10 pin, jdm x05 harness on EM is 12 pin. Also you need to rewire the harness for the fuel temp sensor or you'll get a CEL.

***Herblenny*** · 01-08-2010, 12:50 AM

Quote:

Originally Posted by Zweetz32

if you're gonna use the rhd harness on the lhd car, you're gonna need to do two things. First rewire the x05 on the EM harness to make it fit and match the connector on the front harness. Front harness x05 is 10 pin, jdm x05 harness on EM is 12 pin. Also you need to rewire the harness for the fuel temp sensor or you'll get a CEL.

I can't remember... Are the length the same on both wiring harnesses?

Spooner · 02-09-2010, 11:34 PM

Can you say to me , what color is you hardness plug? beacuse im stock in with my car..i need a wiring diagram of the late hardness that came into FD 96-98 and 99-2002 for the electric installation

I bought a lately J-spec motor and a PowerFC but my car its a 94 FD that brings the yellow/green harness.. so theres a difference between the new and del old harness , any help?

01-05-2010, 09:33 PM	#1
Ed R The Newbie Join Date: Sep 2009 Location: Peoria iTrader: (0) Posts: 9 Rep Power: 0	J-spec RX7 engine swap Is there a difference between the engine harness of a 95 RHD and a 94 LHD RX7? Will I have any issues swaping a RHD engine into a LHD car?

01-05-2010, 11:00 PM	#2
Rotary Inspired Rotary Fan in Training Join Date: Feb 2008 Location: SW OKC iTrader: (0) Posts: 75 Rep Power: 17	Use your wiring harness and solenoids from the U.S. Spec car and you will be ok. I will warn you that Jspec motors are junk yard motors. Its hit and miss if you are getting a good one or not. My RE had sat long enough in the yard that the front plate o ring lands had rusted through. Motor looked brand new on the outside. It was supposed to have 40K on it. Had I dropped it in and started the motor it would have overheated and ruined the rest of it. Hope this helps. __________________ If you wanna become ASE certified buy the RX7.

02-09-2010, 11:34 PM	#6
Spooner The Newbie Join Date: Feb 2010 iTrader: (0) Posts: 1 Rep Power: 0	Can you say to me , what color is you hardness plug? beacuse im stock in with my car..i need a wiring diagram of the late hardness that came into FD 96-98 and 99-2002 for the electric installation I bought a lately J-spec motor and a PowerFC but my car its a 94 FD that brings the yellow/green harness.. so theres a difference between the new and del old harness , any help? Last edited by Spooner; 02-09-2010 at 11:42 PM..

01-06-2010, 09:09 AM	#3
Ed R The Newbie Join Date: Sep 2009 Location: Peoria iTrader: (0) Posts: 9 Rep Power: 0	The original wiring harness and silenoids were trashed in an engine fire from the previous owner. I am trying to resurrect this car and make it nice again. I have just received my J-spec motor and plan to tear it apart for all of the parts that were ruined in the fire. I also plan to have the block rebuilt so that I can have some reliability. The J-spec was removed from the car in August 09 so it hasn't sat very long. Wish me luck!

01-08-2010, 12:15 AM	#4
Zweetz32 The Newbie Join Date: Sep 2009 iTrader: (0) Posts: 1 Rep Power: 0	if you're gonna use the rhd harness on the lhd car, you're gonna need to do two things. First rewire the x05 on the EM harness to make it fit and match the connector on the front harness. Front harness x05 is 10 pin, jdm x05 harness on EM is 12 pin. Also you need to rewire the harness for the fuel temp sensor or you'll get a CEL.