black top harness on a red top? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ryan hagen · 03-04-2005, 07:33 AM

i looked around and searched but i didnt find much but for sale threads. can i use a black top s13 harness/ecu on a red top motor? i d assume i could if i change some sensors? but if there is a major difference let me know thanks?

usctom · 03-04-2005, 10:52 AM

I think the only difference is the o2 sensor on the black top.

the head · 03-04-2005, 12:31 PM

the plugs should line up but be sure to use a blacktop ECU as the pinout on the ECU side is different as for the o2 AFAIK the only diff is the thread size same voltage same o2 just diff threads

Flybert · 03-04-2005, 01:00 PM

Quote:

Originally Posted by the head

the plugs should line up but be sure to use a blacktop ECU as the pinout on the ECU side is different as for the o2 AFAIK the only diff is the thread size same voltage same o2 just diff threads

Yup, use blacktop ECU and blacktop 02 sensor.

trixxxr4_kids · 03-12-2005, 02:10 AM

the harness is all the same , the only real difference in the ecu . I believe the blacktop had a different port on the head allowing for better flow , which is the only real difference between the motors and maybe the heat sinks on the head but its all fine i ran a blacktop with a redtop ecu at 9psi

s13gonwild · 03-12-2005, 02:42 AM

so then the redtop harness could be use on a blacktop correct? just double checking

*fliprayzin240sx* · 03-12-2005, 02:50 AM

DEPENDS ON THE YEAR BLACKTOP. If you have the later version blacktop *97-98* Some of the pin outs to the ECU are different. 94-96 blacktops are exactly the same as the regular redtops with some difference but it wouldnt matter. You can interchange the E5 blacktop ecu and the 62(?) redtop ecu. The O2 sensor wouldnt matter either. You can interchange 02 sensors, only catch is you have to swap the turbo elbow too if you change 02 sensors between the skinny and fat ones.

trixxxr4_kids · 03-12-2005, 02:52 AM

the bottom line is s13 black top and redtop harnesses are the same . Just switch ecus and drive ,

*fliprayzin240sx* · 03-13-2005, 01:19 AM

LIKE I SAID AGAIN...depends on the year blacktop. If the pin outs diffent, the harness is different.

03-04-2005, 07:33 AM	#1
ryan hagen Zilvia FREAK! Join Date: Jan 2003 Location: rhinelander wisconsin Age: 38 Posts: 1,465 Trader Rating: (8) Feedback Score: 8 reviews	black top harness on a red top? i looked around and searched but i didnt find much but for sale threads. can i use a black top s13 harness/ecu on a red top motor? i d assume i could if i change some sensors? but if there is a major difference let me know thanks? __________________ 1990 hatch ka24de gt2871r

03-04-2005, 12:31 PM	#3
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	the plugs should line up but be sure to use a blacktop ECU as the pinout on the ECU side is different as for the o2 AFAIK the only diff is the thread size same voltage same o2 just diff threads __________________ I never knew you could do that with an eggplant

03-12-2005, 02:50 AM	#7
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	DEPENDS ON THE YEAR BLACKTOP. If you have the later version blacktop 97-98 Some of the pin outs to the ECU are different. 94-96 blacktops are exactly the same as the regular redtops with some difference but it wouldnt matter. You can interchange the E5 blacktop ecu and the 62(?) redtop ecu. The O2 sensor wouldnt matter either. You can interchange 02 sensors, only catch is you have to swap the turbo elbow too if you change 02 sensors between the skinny and fat ones. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

03-13-2005, 01:19 AM	#9
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	LIKE I SAID AGAIN...depends on the year blacktop. If the pin outs diffent, the harness is different. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

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03-04-2005, 10:52 AM	#2
usctom Leaky Injector Join Date: Jun 2003 Location: ny Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	I think the only difference is the o2 sensor on the black top.

03-12-2005, 02:10 AM	#5
trixxxr4_kids BANNED Join Date: May 2003 Location: san diego Posts: 56 Trader Rating: (0) Feedback Score: 0 reviews	the harness is all the same , the only real difference in the ecu . I believe the blacktop had a different port on the head allowing for better flow , which is the only real difference between the motors and maybe the heat sinks on the head but its all fine i ran a blacktop with a redtop ecu at 9psi

03-12-2005, 02:42 AM	#6
s13gonwild BANNED Join Date: Jan 2005 Location: cali Posts: 466 Trader Rating: (0) Feedback Score: 0 reviews	so then the redtop harness could be use on a blacktop correct? just double checking

03-12-2005, 02:52 AM	#8
trixxxr4_kids BANNED Join Date: May 2003 Location: san diego Posts: 56 Trader Rating: (0) Feedback Score: 0 reviews	the bottom line is s13 black top and redtop harnesses are the same . Just switch ecus and drive ,