To those running RB25/Rb26 in Z31, gauges question.

[Guest T04TurboSer]

Hi, I'm looking into taking on an RB-series Z31 project after the summer and I'm trying to gather some information on some of the smaller things I can't find searching so I'm prepared before hand.

 

I don't actually own the Z31 yet, but after working on one today (I'm a mechanic), I was looking at the digital gauge cluster and I was wondering what others with the Rb series swaps did about this? I didn't know if there was a way to re-wire it all to function or if a custom gauge cluster was a must in this situation.

 

We've done 2 Rb25/240sx swaps so far so I'm slightly familiar with what all is involved there, but I understand this is a different animal and that things are going to be different than just sending the gauge cluster out to be recalibrated to work with the larger engine.

 

Thanks in advance for any answers

[Racinjitter]

I currently have a 88 Z31 GLL with digital dash, and am starting this conversion this week. I am not going to even try to get the digital guages to work with my swap. I have already bought aftermarket guages to replace my digi dash. One reason for this is the RB25DET revs to 8000 RPM (factory), the digital wont support any mods then as it only shows 8000 rpm max. My second reason for not using the factory guases is due to innacuracy. My third reason for not using the digital guages is that the power supply for the digital guages goes out all the time, the solder on the circuitry goes bad. I have soldered mine twice now, both times with silver bearing solder. I love the look of the digi guages but they just wont be accurate enough for the swap. My final reason for not using the digital guages is that the Speedo sensor is electricly driven, very expensive to replace the VSS $280 nissan cost. I dont believe it can be re-calibrated.

 

There is one other person that can chime in on this subject, his screen name is Dramier. He had this swap done by Augusta Customs in Georgia. He also had/has a digital dash. I believe he kept the digital guages though. http://forums.hybridz.org/showthread.php?t=95730 There isa link to his page on there, direct link http://shenclub.org/images/Bones, and another http://forums.hybridz.org/showthread.php?t=101735. I hope this helps you out.