Thread: Sitec's 101..

Originally Posted by bobslandies

Easier than that. If you have an older local auto instrument technician he will have a cable turn meter. You disconnect the speedo, plug in the cable turn meter and drive up and back a number of times over his measured mile/kilometre.
Have someone else taking the readings and average them. This will give the number of turns and he can change the gears inside the speedometer head. I had a speedo converted from 4.7: to 3.5:1 (Ford 9") in my Series in 1975.
Older techs were doing it all the time for taxis, local Highway Patrol cars, etc.
Today its mostly restored bike speedometers they rebuild that get this treatment.

Bob

Yep. Had that done with one of my Mokes. I ran a taller diff with a speedo that went up to 160km/h (they usually go to 140km/h on the scale). No speedo gears were available for the combination (and I wanted the odometer to be correct as well) so a ratio box was made. Are there speedo gears made for this diff/tyre combination for the 101 speedo?

There's probably something fairly close in the standard range of Series Land Rover speedos if you went to look.

I believe a standard 101 is the same as a SWB Series III on 6.00x16 tyres, so quite conceivable that one of the other utility models would work with the tyre/transfer box combo.
The masking tape and biro approach works for me though.

Originally Posted by Mick_Marsh

Yep. Had that done with one of my Mokes. I ran a taller diff with a speedo that went up to 160km/h (they usually go to 140km/h on the scale). No speedo gears were available for the combination (and I wanted the odometer to be correct as well) so a ratio box was made. Are there speedo gears made for this diff/tyre combination for the 101 speedo?

The body of the speedo looks just like a Series 3, only the gears inside will reflect the 9.00x16 tyres. The gear sets were quite easily changed to get it accurate. Lots of vehicles used those base speedos with many different pairs of gears - like crown wheels and pinions for diff ratios. Whether they are available today is another thing.

Put this in the earlier post - The number of turns is usually at the bottom of the speedo - 2 door RR with 205s is 720 per kilometre.

Simon, it's the number almost under the Cold Start warning light in your dash photo.


Bob

Originally Posted by bobslandies

Simon, it's the number almost under the Cold Start warning light in your dash photo.
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Bob

Well, it still amazes me how much I learn each time I have a spell on this forum! Here's the numbers that I have 'in stock'..

101:- SNT - 6209/135 940
Ser2:- SN - 6147/02A 1536
Ser2A ex Mil:- SN 3321/01 1504

This interests me as I would like to retain an original style speedo in SWMBO's Ser 2 Tdi. Cheers!!

Use the electronic speedo and have it recalibrated to suit the diff and tyres .

.

Originally Posted by Sitec

Well, it still amazes me how much I learn each time I have a spell on this forum! Here's the numbers that I have 'in stock'..

101:- SNT - 6209/135 940
Ser2:- SN - 6147/02A 1536
Ser2A ex Mil:- SN 3321/01 1504

This interests me as I would like to retain an original style speedo in SWMBO's Ser 2 Tdi. Cheers!!

My Parts Catalogues for Series 1, 2, 2A, FC and 101 are in storage over an hour away but if any of you have access this info it is in the Speedometer part numbers for different tyre sizes usually so you can see the differences.
We need some 90/110/Defender numbers with 3.54:1

As I said the RR is 720 turns per km - 3.54 :1 ratio, 205x16 about the same as 6.50x16 IIRC.

I'll dig out some speedos tomorrow if it's not raining.

Bob

If you could give us the number of the teeth on the coloured wheel you are using now, based on your marks on the speedo face compared with the 100 klm point, you need a wheel with 1.7241379310344827586206896551724 times the number of the teeth on the existing wheel.
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Originally Posted by wrinklearthur

If you could give us the number of the teeth on the coloured wheel you are using now, based on your marks on the speedo face compared with the 100 klm point, you need a wheel with 1.7241379310344827586206896551724 times the number of the teeth on the existing wheel.
.

A tad bored, are we?