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[jmax]

Hi.
My V6 badly over heated on the motorway on Saturday. I had called in for some fuel. I also topped the coolant up and forgot to replace the cap on the expansion tank. Any way to cut a long story short - engine overheated blowing out masses of water, Once it had cooled a bit i refilled the expansion tank and it seemed to go straight into the sump. Engine would not start. The AA man diagnosed blown gaskets and carried us home. I have taken the engine apart and sure enough the gaskets are beyond redemptioin. Will also check the oil cooler whilst its in bits. I have 2 questions. 1. How can i clean the bores after all the water is out, and 2. what is the maximum "warpage" i can get away with. I can get a 6thou feeler between the bridge between two of the bores.

[Andy H]

Officially* the heads cannot be skimmed at all. I would say that 6 thou means that your heads are scrap.

Save yourself time and trouble & get a pair of good second hand heads from one of the members who break cars. 

* I had the heads skimmed (successfully) on my 2.5 v6 but I wasn't aware of any warping, I just had the surface skimmed to remove pitting/corrosion.

What are you trying to clean out of the bores? I would use lots of kitchen towel to mop up the water & then apply engine oil to stop it rusting.

[jmax]

Thanks Andy.
I have cleaned the bores and will oil them. Ref the warpage. Its strange -the heads seem to be perfectly flat apart from that bit between the 2 bores, all the other surfaces seem to be ok and feeler tight.

[biggriffin]

  i did my head gaskets last year the price for all the parts was
    £284.45p all  OE spec or genuine gm parts used.
   
  that was complete head set, water pump, cambelt kit,knock sensor,30+ torq screws,sealent for cam covers.
     the oil and filters were stock as was the anti freeze and a new thermostat and coolent temp sensor and crank sensor o and i put a coil pack on while it was in bits seemed silly not to and the hbv was only 3mths old.
   after id run it for a day the oil and fiter was changed again

[The Red Baron]

if worst comes to worst, give me a shout ref heads. 

[jmax]

Thanks.
Is it worth me rebuilding the engine or will it finish up in the same state? What options have you got in mind?

[The Red Baron]

Thanks.
Is it worth me rebuilding the engine or will it finish up in the same state? What options have you got in mind?

tbh, really depends on the condition of the rest of the car. if its a good un then why not. how deep are your pockets?.
your call really. a pair of heads are not a problem, oil cooler about 100 odd notes, all comes down to if its worth it to you i suppose.
 

[jmax]

Ta. Had the car about 12 years without problems, keeps passing its MOT so planned on keeping it. Just done 127 thousand. New discs all round, new rear shocks, body in need of some tlc but getting r/tuit. Pair of heads and oil cooler ?

[The Red Baron]

pm on its way.

[jmax]

Personal big THANK YOU  to the Red Baron for his help. Top man!!!!

[The Red Baron]

Personal big THANK YOU  to the Red Baron for his help. Top man!!!!

your very welcome john, glad to be of assistance in getting your car sorted.