Interesting...5 speed gearboxes...

The selector cover is in a similar place so it would be possible to match the Commer mechanism to the gear change input shaft.
 
Another thing to check is how long the gearbox input shaft is - is it to replace an early Rootes box or the Arrows series.
 
Very exciting thing...this is same company selling the nos Talbot short blocks, have visited them before near Heathrow. Good guys from Iran which is where I guess all the Hunter stuff comes/came from. Very hard to track them done on the internet as there’s several names for the company.
 
Interesting, but looking at those gear sizes it appears the box's first gear ratio is 2.5:1, it would be like pulling away in second. Looks like there might be a misprint on fourth, however, fifth looks good and long at 0.48:1, a fair bit longer than the standard Commer's fourth (1:1).
 
That gearing is waaaaaaay too long for our vans. The five pot 2.5Tdi engine from my Volvo might just have enough grunt to pull it (2200rpm at 70mph in the Volvo), but a 1725 normally aspirated petrol? No chance.

Here's my calculation of MPH at 3000RPM with 185 80R15 tyres and a 5.125diff..........

OEM gearbox 1st=11.29 2nd=19.84 3rd=30.52 4th=46.27 4thO/D=57.84
ebay gearbox 1st=18.27 2nd=32.40 3rd=54.77 4th=73.86 5th=94.86

3rd on the ebay box is roughly similar to overdrive 4th with the OEM box.
Oh well, we can all dream. :rolleyes:
 
Yes, a couple of the ratios are back to front on the ad, but once put the right way round they progress OK from 1st to 5th.

Either it's too long geared or we can't trust the description.

Who's going to spend a spare £600 to find out?
 
Yes, a couple of the ratios are back to front on the ad, but once put the right way round they progress OK from 1st to 5th.

Either it's too long geared or we can't trust the description.

Who's going to spend a spare £600 to find out?
Tempted.....but think this would be of more interest to someone like Steve Williams As I suspect these would of been for rootes/Talbot works test or motorsport rally etc ?
Is that £600 with all the othe bits you might need? Erm.....
 
That gives us ratios to 1

Greenwood / Commer
1st. / 2.533 / 4.105
2nd/ 1.428 / 2.331
3rd / 0.846 / 1.516
4th / 0.580 / 1.000
5th / 0.488 / 0.778 (o/d)

Good for those on the 5.125 diff. with 14" low profile tyres, tuned alloy head and a tail wind:)
 
I’ve not got 600
That gives us ratios to 1

Greenwood / Commer
1st. / 2.533 / 4.105
2nd/ 1.428 / 2.331
3rd / 0.846 / 1.516
4th / 0.580 / 1.000
5th / 0.488 / 0.778 (o/d)

Good for those on the 5.125 diff. with 14" low profile tyres, tuned alloy head and a tail wind:)
They can’t be right must be a mistake...not sure would pull an anything with a 1600 or 1725 in it unless that’s why it never took off :)
 
Just a thought.........
As none of the ratios are direct drive, those ratios may be to the layshaft, and then there would be a constant ratio gearset from the layshaft to the output shaft which isn't quoted in the figures. That might put it all right.
.......... Or not. Just a thought
 
this might explain it
ranian Paykan[edit]
In 1966, Iran National (now Iran Khodro) of Iran began to assemble Hillman Hunters from CKD kits, after a deal was struck between the Rootes Group and Iran National's director, Mahmoud Khayami. The resulting Paykan (Persian for arrow) saloon, utility, and taxi models became known as Iran's national car.
Earlier versions used the Hunter 1,725 cc (105.3 cu in) engine, but later kits were shipped with the Avenger's 1600 cc engine mated to the Arrow range 4-speed gearbox via a special bell-housing. Later, they were all equipped with a 5-speed gearbox. The engine was changed to a Multi Point Electronic Fuel Injection made by the Sagem Company. The spark distributor was replaced with ECU-Controlled Spark Coils. The differential was also upgraded to a version more compatible with the Avenger engine.
In 1977 Roy Axe designed the new facelifted Paykan model using many interior and exterior parts from the Chrysler Alpine.
Full local production began in 1985, after the original British production lines were closed. The new owner in Britain, Peugeot, established a new contract whereby Iran Khodro would manufacture the Paykan with the same body panels but using Peugeot 504 engines and suspension, for six more years. This deal was similar to one in South Africa, where Hunters were once built with locally-made Peugeot 404 engines (from which the 504 units evolved) to meet strict local-content laws applicable in the late 1960s.
The Paykan saloon ceased production in May 2005, to be replaced by the Iranian designed Samand. The Bardo 1600i, the pick-up version of the Paykan, continued to be the sole remaining Arrow variant until the final car rolled off the Teheran Assembly line in May 2015.
 
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