iwannablower

so i had to take both my heads off at the same time due to the coolant line still attached to the heads. now that i have the heads off i figure that i could easily get the line off.... wrong. what do i need to do to get this coolant line off? do i need to get the 15mm bolt off, or do i need to get the bigger bolt that the 15mm is attached to off, or what? because neither of them want to come undone.

monster7

iTrader: (1)

there is only one bolt in each head.
i dont understand what you mean the bigger bolt it is attached to. the bolt goes thru the cooland line and into the head has a rubber washer on each side of it.

tksz28

There is a bolt that goes through a fitting, just use the 15mm and it should come out.

iwannablower

i tried getting it out with a 15mm and it just stripped the bolt, so idk what to do

iwannablower

i swear to god those fuc**** bolts are made of aluminum

96capricemgr

iTrader: (1)

Have you tried Mr. Bluewrench? Since the heads are off maybe you could try to get some sort of penatrant to the backside.

Bawls

iwannablower, man, I just went through this with my head gasket replacement a few months back. On the 94's the bolts were very thin headed and very soft material. I broke a knuckle on one of them trying to get it off with the heads still on the block. To save you some pain and frustration:

Cut the line between the two heads & with the heads attached from each other, grind the bolt head off. That's how I did it. After that, the hollow part of the bolt came right out. Yes the head is 15mm but you'll just strip it.

I ordered a new coolant line from GM:

1993-1994 steam pipe behind heads, incl bolts, seals and hose to radiator 10108635 $31.14

1995-1997 steam pipe behind heads, incl bolts and seals 12556260 $24.91

It will come with all new seals, and if you have a 93-94 I know for a fact the new bolts that come with the steam pipe will have a much larger head on the bolts so next time you have to remove it you can actually get a wrench to bite.