Originally Posted by audifirst
To be honest it's probably going to be less expensive to replace the engine. If the damage is bad, the top ring land can get crushed by the intake valves and that means possible cylinder wall scoring, low compressor, a broken ring or all of the above. The nicks in the piston top from the valves can also cause detonation and mis-fires.
Here's a somewhat realistic break down in cost.
Head gasket set ~$250.00
Rebuilt heads ~$500 each so $1000 total really depends on how many valves you need and what other stuff is required.
Timing belt set ~$280
Fluids ~$200.00 (coolant, oil, filter, cleaner spray, beer to get friends to help)
Used engines can be had for as little as ~$800.00 (100,000K) from reputable recyclers. However it's likely you'd want to service the timing belt and V/C gaskets with the replacement engine.
Shokan is absurdly expensive.
These dudes have a 54K mile engine assuming you need one from an Automatic
1999 Engine Volkswagen Passat -52,000 A 464035 $850 Johnston Auto Salvage USA-NC(Middlesex) Request_Quote 1-919-269-4743 1-800-795-9987