She cranks on her own power!

Discuss the RB20, RB25 and RB26 series engines.
Booztd 3
Posts: 708
Joined: Sat Jan 20, 2007 8:28 am
Car: 1990 Nissan 300ZX TT
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Guys

I made alot of progress with the wiring over the weekend and I am happy to say that the car actually cranks under its own power!

After going through all of the ****ty wiring diagrams I had on hand, I really believe the wiring is quite simple. The biggest ***** was actually getting rid of the unecessary plugs/wires from the rb harness. I have a HUGE ziplock bag full of them that were removed.

I will be trying to document this as well as possible, but I will wait until the car actually runs to post up, just to avoid posting any errors I might have made.

Now all I have left to do is find a dropping resistor box for the injectors and finish up welding a dump tube and it'll be ready for go-time! :lol:



Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
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congrats

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Carl H
Posts: 5985
Joined: Mon Aug 04, 2003 4:09 am
Car: 1995 Nissan 240SX SE RB30DET

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there tend to be quite a few superfulrous wires on rb harnesses, and on a 26 from a r33 easily wipers, wiper amp, abs and a few other bits.as for resistor pack, go junkyarding honda 6 cylinder will do the trick.

KingPastry
Posts: 32
Joined: Mon Oct 30, 2006 9:19 am

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RHD Japan carries the oem dropping resistor packs

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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not trying to be negative, but cranking the motor really doesn't say much about your wiring job, functionality of sensors, or the ecu. all you need to crank the motor is a working starter, battery, and thick gauge wire.

try to bench test your harness before firing it up...

Booztd 3
Posts: 708
Joined: Sat Jan 20, 2007 8:28 am
Car: 1990 Nissan 300ZX TT
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gawdzilla wrote:not trying to be negative, but cranking the motor really doesn't say much about your wiring job, functionality of sensors, or the ecu. all you need to crank the motor is a working starter, battery, and thick gauge wire.

try to bench test your harness before firing it up...
Maybe I should have mentioned that the fuel pump primes, and my ECU has power, as well as backup power. The sensors are all plug & play on the harness as well....

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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Booztd 3 wrote:
Maybe I should have mentioned that the fuel pump primes, and my ECU has power, as well as backup power. The sensors are all plug & play on the harness as well....
sounds more like it..

before i started the motor i took my injectors out but left them plugged into the harness, CAS out, and plugs/coils out and laid them on a grounded pipe. put the key to ign and rotated the CAS by hand. verified that the injectors fired and the plugs sparked. oh yea loop the fuel feed/return line too. i recommend doing that to make sure everything is good to go.


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