So a week or 2 back my timing belt went and skipped a good 10 teeth engine cutout and caput. Suspecting valve damage i decided to take the head off strip it and sent it to the machine shop.
Came back with all 8 inlet valves bent and 2 exhaust valves bent. Got all that sorted inc. Shimming lapping etc. But now am reluctant to fit the new head on. Whats the likelyhood of a crack or some damage to the block in this situation bearing in mind the head underwent a full crack test which came back negative?
I have a 2002 focus st170 which is a 2.0L duratec block.

 

so the head was naff as I suspected, the block is pretty tough tbh but like any mechanical part I would inspect it top to tail before throwing the head on or its more money your chucking away, had 3 good st170 heads here for £75 too

 

Aah if only i knew then ended up costing me 140 at the machine shop including crack test

 

I break st170s and im only in harrow, whole engine go for 275 tried and tested

 

Should be fine. If it's done any damage it will be to the piston ring lands.

Just stick it back together and hope for the best unless you plan on pulling the engine.

 

Car is back up and running now thankfully thanks for the info tho mate will defo be giving you a message if i need any other parts

 

glad to hear its alive and I have plenty of 170 parts if ever you need any

 

Do you have the exhaust manifold heatshield by any chance 😄