I have been going back and fourth for the last two weeks looking and searching for info on 6.0l heads. i know ford says not to surface them but others say they do? Their seems to be little piston to valve clearance from factory. Not looking for anyone to say what is right or wrong but what has everyone been doing whle doing head jobs, are they cleaned, checked and reinstalled, or having them resurfaced. I have a stock 04 250 6.0l with 120kmi and want to do arp studs and gaskets next weekend while adding turner and egr delete, i have no head gasket leaks yet, want to do them before i do.

My cousins truck that we did same work to a month or 2 back had heads at maching shop, they removed, .0011" off heads, recessed valves deeper and cut valve stems down to orginal installed height, and new seals. And so far running good. Some people said now valves are deeper in head and less harden material and are more prone to cracking, also was told that moving valve in heads loosens tention on valve spring if springs are not shimmed.
Not sure just looking for advice and or suggestions.
Thanks,
Peter

 

Anyone have a problem, buy just cleaning and reinstalling heads with not machine work?

 

Get the heads checked at least. That way if you have a warping issue, you'll know about it and then decide whether you want to or not.
I did all this work to a replacement engine I just put in my truck, had the replacement heads checked and sure enough they were out .004 and I had them decked.
Now, I have this motor in my truck and its working great. I didn't get the valves sunk or guides modified as I was told by the head shop that they have taken as much as .008 off 6.0L heads before without any issues.

 

Always deck your heads, it's a lot easier and cheaper then putting it all back together just to pull it apart again.

 

The heads are off, why would you not machine them?

 

As far as I know Ford doesn't

 

that is correct we do not. if they are warped out of spec they get replaced.

 

Thanks Cheezit

I have had a few guys ask to be allowed to take their heads for inspection away from the ford Bay

so far if they are able to get them back to ford quickly it has been OK

 

yup that also works for me. as far as I care the heads belong to the customer. if he/she wants to pay the sublet bill thats great. ford says its a no/no. so It can not be done threw the shop.

 

I Appreciate the input !! as always

 

Going over the alldata information and ford tsb, say in big black letters that heads are not machine able

 

I guess my other question is, in my 04 f250 with no HG leaks, whats the chance that they are warped, has anyone had any experiance with removing heads from a truck that was not leaking and during cleaning and inspection found them to be within the .002" tolerance. Just trying to prepair myself if i would have to replace them or not?

 

have done lots of heads and most are in spec.
also refer to the engine section of the book for the warpage checks as it has changed, that spec copmes from the tsb.

 

Dose ford's replacement heads come complete with valves and everything ready to bolt on or are they bare heads

 

complete units.