speedometer

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09-01-2003 | 10:38 PM

Lion00

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speedometer

will the 1979 120 mph speedometer work if i used it to replace my 1980 80 mph speedometer with no problems?

09-01-2003 | 11:13 PM

icice9

Super Siver & Black Stud

Joined: Apr 2003

Posts: 1,526

From: Hayward Ca

it should just plug right in

09-02-2003 | 05:24 PM

AllmyZs

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I have a 140MPH out of a 79 if you want .

09-02-2003 | 11:26 PM

Lion00

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check PM

09-21-2003 | 07:48 PM

280ZXRider

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The 120 is off by 5mph on my car, don't know why..

Chris

09-21-2003 | 07:48 PM

280ZXRider

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The 120 is off by 5mph on my car, don't know why..

Chris

09-22-2003 | 12:43 PM

lifegrddude

Externally Wastegated

Joined: Oct 2001

Posts: 1,220

From: San Diego

Are your tire sizes the OE sizes or at least the same diameter as what's recommended from the factory? If not that might be why the speedo is off for you.
John 82ZXT

09-22-2003 | 01:41 PM

cerealkilla

Registered User

Joined: Aug 2003

Posts: 136

From: Virginia Beach, Va

if you have cruise control on the 1980 it may not work with the older spedo, if not it will work fine

09-23-2003 | 08:36 AM

Bleach

The Evil Twin

Joined: Mar 2001

Posts: 9,296

From: Seattle, WA

Oh, maybe the '79 speedo somehow is calibrated differently. Also a '79 and '80-83 will have a variety of different rear gears. I would think that it wouldn't make a difference though since it reads what your car's speedo cable tells it to read.

Maybe you need to swap speedometer cogs to fix the 5mph thing.