Speedo Recalibration.

Post by **Brian Munce** » Wed Oct 22, 2008 6:03 pm

Does anyone know where to get speedos recalibrated for larger tyres fitted to a Sierra at a reasonable cost?

Post by **lump_a_charcoal** » Wed Oct 22, 2008 6:59 pm

Brian, I think I heard of a place in Smithfield, but I cant remember exactly - I'll keep looking.
Maybe post this in general 4x4 too, as it is a common 4x4 problem...

Post by **RockHopper** » Wed Oct 22, 2008 9:09 pm

Just posted this in another post, but just for you

Attspeed Auto Instruments
35 Glossop Street ST MARYS NSW 2760
(02) 9833 0055

As mentioned also in the other post, I've used them a few years ago to recalibrate the speedo in a 4.1 cortina with a 5 speed supra box fitted in it. They were pretty good.

Post by **86slowsierra** » Wed Oct 22, 2008 9:25 pm

Apparently you can fiddle with a screw in your dash that will adjust your speedo to suit any tire size. there was a thread about this somewhere. Not sure if it was on Pirate, Zuwharrie or some other site.

if you have the time why not pull the dash off and have a look. its only a few screws.

Does anyone know the thread im talking about?

Post by **Mike E** » Wed Oct 22, 2008 9:31 pm

doesn't that only correct it at a specific speed?

Post by **crackatinny** » Wed Oct 22, 2008 9:48 pm

the more properer way to do it is changing the magnitivity of the magnets (if that makes sense)

Post by **greg** » Thu Oct 23, 2008 11:05 am

You could use a GPS as your speedo. That would fix the issue (unless indoors).

Or, you could swap your diff gears to suite your tyre size increase. But this would limit your choices of tyre sizes.

Post by **monkeyplex** » Thu Oct 23, 2008 11:29 am

Where exactly does the speedo read from? (Sorry to hijack)

Post by **Squik** » Thu Oct 23, 2008 12:20 pm

$280 will get you a ratio box fitted and calibrated (you can have it adjusted later on if you go up in tyre size) - over at General Auto in Lidcombe.
You'll also get a little certificate to keep in your glovebox.
Don't have the number handy, but they've done my Zooks in the past - great service.

Post by **lay80n** » Thu Oct 23, 2008 12:42 pm

monkeyplex wrote:Where exactly does the speedo read from? (Sorry to hijack)

Output shaft of the t-case.

As squik said, the proper way is the get a ratio box made up. On some cars you can swap the speedo drive gear, but not on zooks.

Layto....

Post by **Brendan-s** » Thu Oct 23, 2008 2:19 pm

Police officer: "How fast do you think you were going?"
4130warrior: "Um... I honestly have no idea sir."
Police officer: "Don't even want to guess?"
(feeble) 4130warrior: "No..."

Post by **fool_injected** » Thu Oct 23, 2008 3:56 pm

4130warrior wrote:Police officer: "How fast do you think you were going?"
4130warrior: "Um... I honestly have no idea sir."
Police officer: "Don't even want to guess?"
(feeble) 4130warrior: "No..."

I got clocked @ 87 in 50 recently
Handed my license over and said write me a ticket
The cop freaked out
Cop: "What you not going to argue with me"
Me: "Nah, you got me fair and square with the gun, write me a ticket"
Cop: "Why were you going so fast"
Me: "It's late I've had long day at work and want to get home"
Cop goes back to the car and returns with the ticket
Cop: "You know 30 over is loss of license"
Me: "Yeah where's my ticket"
Cop: "Dude your weird but you seem like a good fella, only done you for 15 over, take it easy"

Morals of the story: Don't bull shit, they have heard it all before AND DON'T SPEED

Post by **lump_a_charcoal** » Thu Oct 23, 2008 4:05 pm

fool_injected wrote:[ you seem like a good fella, only done you for 15 over, take it easy"

Moral of the story: Don't bull shit, they have heard it all before

OK if you aren't allowed to bullshit, how come he is? Ha haa ha

Post by **fool_injected** » Thu Oct 23, 2008 4:06 pm

lump_a_charcoal wrote:
fool_injected wrote:[ you seem like a good fella, only done you for 15 over, take it easy"

Moral of the story: Don't bull shit, they have heard it all before
OK if you aren't allowed to bullshit, how come he is? Ha haa ha

good point

If you ever turn up to a club meeting, that's a fine

Post by **lump_a_charcoal** » Thu Oct 23, 2008 6:18 pm

Ok I'll bring my ash tray in... If my shifts ever allow me to get there...

Post by **monkeyplex** » Fri Oct 24, 2008 11:38 am

Get a GPS, go for a drive, take note of the actual speed you are doing for 10 20 30 40 50 60 70 80 90.... ect then ripp the instrument cluster out, take the cover off and write the correct speeds over the top with a label maker.

Actually thats could be alot of effort. And the numbers wouldn't show up at night. Don't worry.

Post by **Squik** » Sat Oct 25, 2008 10:20 am

Remember the stickers you used to be able to buy to put over the top of 'milage' gauges that had kilometres on them?
Maybe just grab one of those and once you've worked out speeds on a GPS, just turn it to suit and whack it on

You'll need a ratio box though if you are after engineering in NSW, they don't want to know about you until you've had that done...

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