Went to a junkyard yesterday, and i found 12 pairs of GT40 heads and 8 pairs of P heads... My question is are these heads still usable?( if they're given a full rebuild.) All the intakes were gone...the stang guys just sand down the orange paint. Then purchase them. The cashiers don't even give a s#!t if they're the Cash for Clunker ones. So if i just take off the paint im pretty sure i can buy them. the heads themselves have very little paint, only the valve covers do(but a simple swap there can fix that) The only thing i'm worried about is if the Liquid glass they put in the oil ruined the heads.....
why why why!!! thats like 2000 dollars worth of heads!!! WHy did they have to do the cash for clunkers thing.... I would say they would be rebuildable????
if they are rebuildable i would say they are worth a couple hundred a pair.i would take one to a machine shop have them check it out.
They will probably need hot tanked, a valve job and valve guides, all of which you would probably do anyways when refubishing used heads.
Uh, no, they're not. If they were there would be no market for valves, valve jobs, guides, milling, stem seals, etc.
Thanks guy! i'm going to pick up 2 pairs....... Try and port some, and if i do mess them up i'll have a back up pair
Get the gt heads.Don't bother with the p heads.Too many issues with header problems,due to spark plug location.Oh,...and pick me up a pr.of gt heads too.lol
Gotta be worried about them. Depending on how much damage is done to the motor from the silica you might have alot more then you bargained for. Gotta remember what happens when you heat up sand hot enough and think that stuff might be plugging up all of the oil passages. And no I am not implying that the oil passages are packed solid with a big chunk of oily glass, I am saying there are probably big chunks of burned silica either plugging up or coating the oil passages. The next question I have is would you really be willing to risk running heads that might have chunks of that stuck in the oil passages on a fresh rebuild? You can boil and wash and whatever but you still might not get all that crap out till you run the motor for a little while and the constant expansion and contraction of the cast iron breaks the silica free and runs it through your nice fresh rebuild. So there it is... you have a 50% chance of me being wrong, and you will be able to have it flushed and you will have a cheap set of heads that work great for you . But on the flip side you have a 50 % chance of me being right and you could stick them on your motor and possibly fail 15 miles from your house.
What are they doing to these heads to make them fill up with glass? Are they dumping sand into running motor's oil, or what?
Oil comes up pushrod, sprayed from rocker cooling springs flowing off head into block. Where will the blockage happen? I WOULD have them hot-tanked n checked, but then any head outa jyard should. Unless ur doing a junkyard build but not the case here. If jyard aint real picky on CFC, take spray paint to cover the orange paint
So you can say without a doubt that there was zero possibilities that the valve guides are not damaged? Or that the silica didnt get into any other components on the engine, like past the piston rings, or into the cooling systems?..... Like I said there is a 50/50 chance I am right are you willing to take that risk? But from what I see of the possible repercussions if I am right you might as well save up your pennies and buy some new heads.
