RB RPMs?????????

Discuss the RB20, RB25 and RB26 series engines.
TwinCityTech
Posts: 101
Joined: Sun Dec 30, 2007 12:40 pm
Car: s14 KOUKI(low n slow) s13 RB20DET(sold)

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Anybody know of a way to wire up a stock 240sx tach with an rb swap? Heard of a rpm converter box. s13 if it makes any difference. Any help is much appreciated!


rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

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Hey not sure about the box but I live about an hour from you in SpringCity Tn.

I have heard the resistor in the back of the tach needed to be adjusted or replaced but im not sure. I use my SAFC as a Tach only!

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d356bud
Posts: 275
Joined: Sun May 20, 2007 5:29 am
Car: 1990 240sx w/ RB25DET
Location: Clifton Park, NY
Contact:

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I've heard about the 10k resistor, but I'm assuming the DOHC Tachs have a POT in them like the SOHC. Therefore you should be able to adjust them.

TwinCityTech
Posts: 101
Joined: Sun Dec 30, 2007 12:40 pm
Car: s14 KOUKI(low n slow) s13 RB20DET(sold)

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Good to know there some rb swaps nearby - wouldnt have any interesting parts for sale would ya? Btw I work on the airport motor mile if ur familiar. My buddy who I got the swap from (rb20) used the safc too for rpms- U got power steering?

rb25drag
Posts: 1311
Joined: Mon Sep 24, 2007 9:51 am
Car: 1990 Nissan 240SX 5.3 Chevy + 60mm turbo + blow threw carb.

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Im running the rb25, are you looking for the pump or the lines?


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