Stronger tranny, and RPM on highway

unclejemima · Post by **unclejemima** » Fri Jan 21, 2005 3:13 pm

Is the only thing that changed in 83-84 is the final gear ratio? Is any year of tranny stronger?

With the 3.73 vs 4.10 gear ratio of the older vs newer tercel's, what does each rev on the highway (approx 60mph)
-mark

takza · Post by **takza** » Fri Jan 21, 2005 4:32 pm

With an '83 6-speed I get an indicated 65 MPH at 3K in 5th.

3A-C Power · Post by **3A-C Power** » Fri Jan 21, 2005 4:51 pm

The changes to the tranny were in the shift forks and the linkage, which doesn't affect the strength. The gear ratios changed but the design of the shafts and gears really didn't. The 85 also added a switch for the extra low gear with an indicator light on the dash.

unclejemima · Post by **unclejemima** » Fri Jan 21, 2005 6:54 pm

Oh, i dont own one yet, so please let me know...

is the super low 1st gear only avail in 4x4? So if you had an 85 SR5 the gear indicator would light up as would the 4x4 light in the inclinometer.

So after 86 when the inclinometer was no longer available, then just the super low light went on when you went into first gear.

Will an 85 Rev about 3500rpm at 65mp/h then?
-mark

Retroloc1 · Post by **Retroloc1** » Fri Jan 21, 2005 11:48 pm

A 83-84 develops exactly 34.4Kph per 1000rpm with 175/70-13.
That means 2800rpm at 60mph
Tacho and speedometer are both wrong.

According to needles, it's about 37 So about 4500rpm at 104mph.

[I've already driven it at 5200rpm on 6th (downhill)... calculate !]

Typrus · Post by **Typrus** » Sat Jan 22, 2005 12:13 am

Extra Low only available in 4wd applications with 4wd engaged.

Retroloc1 · Post by **Retroloc1** » Sat Jan 22, 2005 7:54 am

Here are the datas I have for a 83-84:
gears ratios
4.714 in EL
3.676 in 2nd
2.071 in 3rd
1.377 in 4th
1.000 in 5th
0.825 in 6th
final ratios:
3.731

This gives with 175/70-13
6.044 kph per 1000rpm in EL
7.77 in 2nd
13.76 in 3rd
20.69 in 4th
28.49 in 5th
34.47 in 6th

With a car not fully run-in and poor genuine Dunlop "all season":
733.5 mmHg, 12Ãƒâ€šÃ‚Â°C, 75% hygrometry
Weight 1043Kgs (530+513)

0 to 100 Kph in 16"5 and 300metres
0 to 400m (1/4mile) in 19"6 (finish at 109.5kph)
0 to 1000m in 37" (132kph)

152.5kph in 5th and 146.6Kph in 6th (average of two directions)

Brakes (15 KgForce on the pedal):
100 to 0kph in 3"9 , 6.06 m/sÃƒâ€šÃ‚Â², 59.1m long (Cold)
100 to 0kph in 4"65, 5.21 m/sÃƒâ€šÃ‚Â², 69.9m long (Hot)
'84 Dunlop = POS !

Fuel:
4.55 L/100Km at 40kph constant
4.7 @ 50
4.85 @ 60
5.15 @ 70
5.6 @ 80
6.1 @ 90
6.7 @ 100
7.4 @ 110
8.45 @ 120
10.1 @ 130
12.2 @ 140
13.6 @ 146.6
Eco drive (75 kph average, max 90, no trafic) 6.25 L/100Km
Maximum 14.8 L/100
...not fully run-in ! I need less gas with a worn engine.

Tests at Monthlery in June 84 by L'auto-journal (independent press).