RB25 to S14 conversion tach resistor question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Rezlo · 10-05-2006, 09:22 AM

Just finnishing up my RB25 S1 Swap into my S14, I have the tach working but it obviously reads 1.5 times to high, I see most people say put a 10k resistor in and it corrects, well I tried that, inline the tach doesnt work and I dont want to try it any other way, Please can someone advise me where and how to fit the 10k resistor onto the tach wire.

Thanks

Rezlo · 10-06-2006, 05:47 AM

Pretty please some one help i feel so

eh? · 10-06-2006, 08:35 AM

Never heard of that resistor mod, but on the back of the tach there is a small blue adjustment screw. IF you have something else to reference RPM you can adjust it to be fairly accurate. (most tachs aren't very accurate anyway)

g6civcx · 10-06-2006, 08:54 AM

I don't know the calibration for the stock tach.

I recommend a good aftermarket tach because the stock tach isn't accurate, especially in the upper quadrant of the rev range.

Rezlo · 10-06-2006, 10:10 AM

I dont seem to have a blue adjustment screw, my car is a RHD Euro version with a 260kph clock, speedo seems to be very close to accurate,

My car looks bone stock rocking a pretty built RB25, last thing i want in there is a big gangly looking tach, ill have to see if i can find a skyline tach to swap in

10-05-2006, 09:22 AM	#1
Rezlo Zilvia Member Join Date: Jan 2005 Location: Chicago&South Africa Posts: 292 Trader Rating: (0) Feedback Score: 0 reviews	RB25 to S14 conversion tach resistor question Just finnishing up my RB25 S1 Swap into my S14, I have the tach working but it obviously reads 1.5 times to high, I see most people say put a 10k resistor in and it corrects, well I tried that, inline the tach doesnt work and I dont want to try it any other way, Please can someone advise me where and how to fit the 10k resistor onto the tach wire. Thanks

10-06-2006, 05:47 AM	#2
Rezlo Zilvia Member Join Date: Jan 2005 Location: Chicago&South Africa Posts: 292 Trader Rating: (0) Feedback Score: 0 reviews	Pretty please some one help i feel so

10-06-2006, 08:35 AM	#3
eh? Zilvia Member Join Date: Apr 2005 Location: Orlando, FL Age: 44 Posts: 283 Trader Rating: (0) Feedback Score: 0 reviews	Never heard of that resistor mod, but on the back of the tach there is a small blue adjustment screw. IF you have something else to reference RPM you can adjust it to be fairly accurate. (most tachs aren't very accurate anyway)

10-06-2006, 08:54 AM	#4
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	I don't know the calibration for the stock tach. I recommend a good aftermarket tach because the stock tach isn't accurate, especially in the upper quadrant of the rev range.

10-06-2006, 10:10 AM	#5
Rezlo Zilvia Member Join Date: Jan 2005 Location: Chicago&South Africa Posts: 292 Trader Rating: (0) Feedback Score: 0 reviews	I dont seem to have a blue adjustment screw, my car is a RHD Euro version with a 260kph clock, speedo seems to be very close to accurate, My car looks bone stock rocking a pretty built RB25, last thing i want in there is a big gangly looking tach, ill have to see if i can find a skyline tach to swap in