Err, bit late here and i've never been in here before also don't know if this will help, would the Punto GT engine fit??
Sounds an intersting project

""""would the Punto GT engine fit?? """"

YES .... change FLYWHEEL.....(camshaft box ower head) ....

what about a wee honda vtec 100bhp per litre naturally aspirated FWD.

how can i have 100 hp at the crank from a sohc 1500 from fiat regata to fit in my fiat 128 without major modifications nor bigger carbs i want it with stock fiat carbs and i need photos for body strengthing for this conversion i dont want the car for a race but to be more fast than the yugo sohc 1100 already fitted

ahmed_mahdy2003 said:

how can i have 100 hp at the crank from a sohc 1500 from fiat regata to fit in my fiat 128 without major modifications nor bigger carbs i want it with stock fiat carbs and i need photos for body strengthing for this conversion i dont want the car for a race but to be more fast than the yugo sohc 1100 already fitted

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My 128 is an uno 1300 engine which has been balanced, 1100 head on it, twin throat weber 32mm carb and reasonable 4-2-1 exhaust. I have the 128 wagon gearbox. It can easily pull away from 1.7L Alfas etc. Dynoed once, the man doing it didn't want to take it past 5000rpm so only 55hp at the wheels, however it revs to 8000 so I would think it would be around the 90hp range at the crank. It has been raced heaps and I have no problems with the body cracking up. I would think you could easily get your 100hp out of the 1500 but you may need to reconsider the 'stock' bits and pieces.