aiyah. you should know better. tempests were upgraded centurions, of which 63 of the 1st batch (mk.3 and mk.7) were from india. israel helped locals modify them (idf sho't standard) and later retired batches (while they upgraded mbt units to merkava). why sg didn't buy upgraded centurions directly from idf? i don't know but there's speculation that idf wished to protect certain ipr "treasures". anyway, sinkies learned about the idf sho't standard and called it a new name, after adapting it for the saf. tempest is essentially just a modified centurion tank.
well, its you that should know better. You should know better then to believe everything you read on the internet. Yes, the Tempest were from India. They were in poor condition and I think they still had the 17 pounder gun. The number we got from them was never disclosed. There is a lot of speculation about the number of Tempest, I never saw 63 of them. Of course, most people never even saw the ones we had in Taiwan. I think 63 was a little on the high side. One battalion, yes for sure. But of course, what do I know.
My understanding was the IDF did not help the locals modify them. The locals, meaning SAE was already busy with other work such as AMX-13 refurbishment and repair, M113 refurb and repair, assembly of Mercedes 3 tonners, maintenance on Jeeps, land rovers, unimogs, etc. I never met one SAE personnel who worked on refurbishing the Tempest nor did I ever meet one armour officer who ever said we did the modifications ourselves, with or without jewish help. If you were ever at the SAE facilities in those days, there was no space to fit in a mini cooper. I was told that the Centurions were send to Israel. they were already set up for it as they had been doing the SH'ot Kal Alef mods for some time. There was no expertise in SAE to do the type of work needed on the Tempest. And in fact, 1 decade later, all the mods SAE were capable of doing was the AMX-13s to SM1. And that was a long drawn out painful process for them too. If they had done the mods for the tempest, i would imagine the one for the AMX-13 would be a piece of cake for them.
Anyway, after the Jews modified the Indian tanks to Tempest standard, they were send back to Singapore, and the detachment send to Taiwan. As for why the SAF did not buy the modified Centurions directly from Israel, the answer to that was quite simple. I had asked this same question during my time in the SAF and was told the Jews just would not sell it. The Sh'ot was almost of a mythical standing in Israel, the tank that saved Israel, etc. They were like national treasures. They were never going to sell us any. They were also facing an arms embargo with the US being their only weapons supplier. And the verdict on their American M48 was not that great. Later on when they got the M60, it was roughly equal to their Sh'ot.
The mods that the Jews did for our Tempest was a baseline model. Many modifications were not included in the ones they made for Singapore. For example there was no provision for Blazer/Delal ERA armour. They had the diesel continental and the auto trans, and the 105 mm L7 gun. The FCS and stabilizer was not the best the IDF had. But still, in SE Asia, the best tank by far. Tempest was our codename for the modified tank. Not a new name. We could not openly say Centurion, so we called it Tempest.