Rb20det Timing/IDLE

Discuss the RB20, RB25 and RB26 series engines.
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PROJECTRB240SX
Posts: 3673
Joined: Fri Jun 13, 2003 5:33 pm
Car: 1972 DATSUN 240Z W/ SR20DET

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THERE IS A LITTLE BUMP ON THE TIMING COVER.


frosted flakes
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Joined: Tue May 13, 2003 9:02 am
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ahh that is what i thought it was good just checking ;)

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PROJECTRB240SX
Posts: 3673
Joined: Fri Jun 13, 2003 5:33 pm
Car: 1972 DATSUN 240Z W/ SR20DET

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YEAH I WAS LOOKING FOR A LINE ALSO (DAMN AMERICAN MANUFACTURERS SPOILING ME!)

frosted flakes
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hmm cool i read the whole thread...looks like i need to disconnect my battery and let the ecu do its thing... timing is a biatch!

sil820
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Joined: Sun Feb 15, 2004 5:50 pm

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ive been having this same damn problem..the only thing is i dont have that many tools to do all that.. how do i change my o2 sensor? disconnect the down pipe or exhaust? so the 1984 200sx with the ca18et engine o2 sensor will fit perfect? my car has been running hella rich and the timming is horrible its all the way 2 the right, i thought advanced might b good but guess not.. right now i have no RPM readout so i dont know what my idle is at. so should i just adjust the timming back 2 normal w/o messing with the AAC valve? what should i do?

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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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sil820 wrote:ive been having this same damn problem..the only thing is i dont have that many tools to do all that.. how do i change my o2 sensor? disconnect the down pipe or exhaust? so the 1984 200sx with the ca18et engine o2 sensor will fit perfect? my car has been running hella rich and the timming is horrible its all the way 2 the right, i thought advanced might b good but guess not.. right now i have no RPM readout so i dont know what my idle is at. so should i just adjust the timming back 2 normal w/o messing with the AAC valve? what should i do?
whoah there dude.calm down :p.ok to change the o2 sensor you will have to buy a o2 socket and remove about 1/4" of material off the end so that you can fit a ratchet in there, else its gonna hit the brake booster.yes, the o2 sensor from the 84 200sx ca18et will work, ive had it on my car for a week now and it runs fantastic.advanced timing is bad, its a recipe for disaster.you need to hook the tach up so you know what the engine is tuning out, or alternatively on the efi harness there is a connection to read the rpm, the wire is yellow and red and is often capped off with a dust boot (on of the round random things on the efi harness).i would lower the idle then adjust the timing as timing is interrelated to engine speed.trust me, with the right timing and a new o2 the car pulls harder and feels better than the timing set at 30.

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Wulfgang
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Joined: Tue Oct 28, 2003 5:41 pm

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Use a 22 mm box-end wrench for the O2 sensor. How in the world do you get a socket over an O2 sensor/wire/plug without destroying it anyway???

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

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they sell o2 removal sockets, they have a cut out for the wire.

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Wulfgang
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Joined: Tue Oct 28, 2003 5:41 pm

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Ahhh.... learn something new every day.

goofynick6
Posts: 1216
Joined: Thu Feb 05, 2004 9:58 am
Car: 1995 S14.5 RB20DET

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Adjustable wrench works just fine everytime I've ever needed to remove an O2.

Nick

Joe
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Location: Phoenix, AZ

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goofynick6 wrote:Adjustable wrench works just fine everytime I've ever needed to remove an O2.

Nick
hah you havent had one rusted into the bung yet. just wait.

an o2 sensor socket or crowsfoot works awesome. the socket has a small slot in the side where you let the wires come out.

sil820
Posts: 236
Joined: Sun Feb 15, 2004 5:50 pm

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where can i pick up a new o2 sensor at?

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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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you can get one at your favourite auto supply shop.

sil820
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Joined: Sun Feb 15, 2004 5:50 pm

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thnx


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