How to correct speedo when larger tyres fitted??

Marty · Post by **Marty** » Thu May 24, 2007 2:12 pm

I'm planning on lifting my L series (finally) in the next couple of months. Before I do I just thought I'd look into converting my speedo so that it's still accurate. Has anyone done this either with manufactured kit or something made at home? I'd rather not just use whiteout on the dial. Cheers, Marty.

AndrewT · Post by **AndrewT** » Thu May 24, 2007 4:24 pm

I've seen a couple of L series with a little "gearbox" put inline with the mechanical speedo cable. They have an adjustable ratio in them which can be tuned to make the speedo read correctly.
Don't ask me where to get one as I havn't spent much time trying to track them down, but thats the way to do it.

FROG · Post by **FROG** » Thu May 24, 2007 4:26 pm

CHANGE THE SPEEDO DRIVE GEAR IN TRANS CASE... YOU HAVE TO DO THE MATHS THERE ARE A COUPLE AVAILABLE SIZESTHAT I KNOW OF:rolleyes: yours is a 28 or 27 tooth from memory

Xtreme_RX · Post by **Xtreme_RX** » Thu May 24, 2007 4:41 pm

Marks 4WD Adaptors.....
Give them a call....

FROG · Post by **FROG** » Thu May 24, 2007 4:49 pm

whittackers speedos wagga wagga---0269216827

daveosubi · Post by **daveosubi** » Thu May 24, 2007 4:59 pm

What do these cost roughly?

I'll be interested in one soon if there not to much, otherwise plan b is the gps and learning the difference

stinky · Post by **stinky** » Thu May 24, 2007 7:26 pm

I wouldn't bother, Spend a few days watching a GPS screen and you'll be able to automatically know the difference. I find very little difference in my MY sedan with 27" tyres.

Post by **Alex** » Thu May 24, 2007 8:08 pm

there's abit of info in this thread...

http://www.westernangler.com.au/forum/S ... 101/tm.htm

alex

AlpineRaven · Post by **AlpineRaven** » Thu May 24, 2007 10:57 pm

Better off getting $150 GPS from ebay and watch it - its 99.9% accurate. - but no good in tunnel or under bridges.
Cheers
AP

Subafury · Post by **Subafury** » Fri May 25, 2007 1:13 am

just learn how much its out by- usually about 10 or so km's an hour.

32ford · Post by **32ford** » Sat May 26, 2007 1:18 am

castlemaine rod shop will make you a mechanical or electronic adapter to correct speedos

90brumby · Post by **90brumby** » Sat May 26, 2007 1:29 am

after speakin wid a few guys wid big tyres i just assume mine is 10% out