In the 1980s US transferred military technology to China to fight Russia. Among them advanced Jaguar tank based on Type 59.I think people underestimate complexity of Jet engines.
You could give the best engineer group in Iran, a blueprint of AL-41 and $1B in r&d and they will fail to produce one AL-41.
It’s like asking someone to copy Coca-Cola. It’s just as much an art (timing of blades and construction of materials and its properties) as it is a science.
So for Iran to build a heavy engine it’s going to take time, luck, and a lot of development especially with its paltry military budget. People like to point to China, but China has a military budget that is 40x Iran and in 1990 it was 17B basically what Iran’s military budget is today. So let that sink in....30 years ago China had the same military budget as Iran today also add the fact that China had access to foreign parts and transfer of technology from fall of Soviet Union and you can see why comparing Iran to China in terms of military developments is like comparing a Honda to Ferrari.
The Type 59 Jaguar Tank was an upgrade package for exported Type 59 Tanks developed by China & American Firm Cadillac Gage. It failed to secure any orders.
Army Guide - information about the main battle tanks, armoured vehicles and armament of the land forces and also the information concerning other army subjects - Jaguar, Main battle tank, Armoured Vehicles