Speedometer inaccuracy

GZE_RA21
Club4AG Enthusiast
Posts: 109
Joined: Sat Jan 16, 2016 6:19 pm
Location: San Clemente, California
Contact:

Speedometer inaccuracy

Postby GZE_RA21 » Fri Apr 26, 2019 12:54 am

What's up C4AG?

I recently did a W58 swap into my blacktop Corolla and the speedo is way off, 25% approximately, ie traveling 75mph when the speedo says 100mph. So prior to the W58 I removed the gauge cluster and dialed it back as much as it would go which made the T50 perfectly accurate as the speedo was reading high when I got the car. Since the speedo cable plugs into the T50 and W58 the same, I tried swapping the drive gears on them, but unfortunately they are very different.

So my question is, is there any known W series speedo drive gear with a different ratio or tooth count that would remedy this?

Or any other possible solutions?

Thanks!

Disable adblock

This site is supported by ads and donations.
If you see this text you are blocking our ads.
Please consider a Donation to support the site.


aukword1
Club4AG Expert
Posts: 473
Joined: Fri Dec 06, 2013 6:03 pm

Re: Speedometer inaccuracy

Postby aukword1 » Fri Apr 26, 2019 8:23 am

You would need to swap the speedo gear. SQ engineering has several options available

https://www.sq-engineering.com/product/ ... edo-drive/

Also, wheel size also affects the speedometer if you want to experiment with different sizes.

GZE_RA21
Club4AG Enthusiast
Posts: 109
Joined: Sat Jan 16, 2016 6:19 pm
Location: San Clemente, California
Contact:

Re: Speedometer inaccuracy

Postby GZE_RA21 » Thu May 02, 2019 12:32 am

Many thanks! Shoulda figured SQ had something like that.

Disable adblock

This site is supported by ads and donations.
If you see this text you are blocking our ads.
Please consider a Donation to support the site.



Return to “TECH: Corolla AE86”

Who is online

Users browsing this forum: No registered users and 2 guests