After towing a friend twice in his van my little escort 1.6 zetec has lost some power not sure what has happened clutch is good

 

Towing puts a bit of extra strain on the engine/chassis but shouldnt just lose you power.
Checked all the basics? Plugs/HT leads etc etc.
Shock of pulling a vehicle hasnt caused any wiring/connectors to come away from their sensors etc?

In what way does it feel likes its "lost power"? 2.0 conversion is a huuuuuge improvement over the 1.6

 

I think an LS1 engine is the only real solution to your issues

 

I have lost power on acceleration put my foot down takes a lot longer to respond than it used to
My friend suggested putting a 1.6 cvh block in it with the zetec head?

 

No thanks would rather put a diesel in it

 

The other way round works, zetec block, CVH head, to give you a ZVH hybrid.

 

well that would have a decent amount of torque fit towing!

 

How hard is it to do or is it easier to put a 1.8 in it

 

Don't think I'm going to do much towing I had it moted and the guy recommend cutting the tow eye off because I almost ripped it off anyway

 

Just search ZVH engine on here in the search bar above and there will be plenty of stuff to help you out.