No what so ever
1,2 bar on E85 fuel should be safe on a good standard engine.

The only problem i got by the end of the summer was probably a broken headgasket or the intakegasket... but that was expected after all the abuse i gave it...lots of revlimiter and launch control.

Can you stay away from that, and i think a conversion like this could run forever!
Compare to a turbocharged 8v sohc "pinto" this conversion on a 12v v6 is superior!