my 92 legacy overheating

[TomsSVX]

The coolant popping out on start-up and shut down is typical for this... Considering the gasket may have been comprimised and the head could have possibly been warped... I am on the same page as Jeff.

Tom

[Manarius]

Originally Posted by cruisen_15

ok so heres what i did: loosend head bolts and retorqued them in sequence the way in the repair book, the first way they were on there was a little to tight!

then after that i emptied all the coolant (mostly water though) and then baught a new gasket for my thermostat, then i put 2 bottles of subaru conditioner in and then refilled coolant, let it idle for 10 mins with radiator cap off, then drove it around and it was going good so i boosted it to 5 psi twice and then cruised a little (run was around 20 minutes) (never would last that long before this).... stopped the car and there was pressure but the overflow tank was the same level i filled it to , put my hand on the rad cap and it was cool to the touch. my turbo even has less turbo surge for some reason, but hey i think i fixed it? i only hope so!

If you ran it 20 minutes and the rad cap was cool, I'd bet you have a water pump or some sort of blockage problem. After 20 minutes in my Legacy, that rad cap was definitely warm. With the turbo, I would assume it would get as hot or hotter.

[cruisen_15]

problem came back again

[jeffast]

Originally Posted by cruisen_15

problem came back again

well, at least you know the torque sequence for the head bolts now.
i'd replace the bolts as well this time, they were probably tightened past their yield point, and are no longer usable. also don't forget to check if the heads are warped, torquing them out of order usually causes them to warp.

[TomsSVX]

mind if I ask what torque values were used the first time??

Jeff is right, the head bolts stretch... When they are stretched past a certain point, they lose their spring.

Tom

[jeffast]

Originally Posted by TomsSVX

mind if I ask what torque values were used the first time??

Jeff is right, the head bolts stretch... When they are stretched past a certain point, they lose their spring.

Tom

hey tom if you read my signature, the torque values are stated:
cruisen_15:at the same time installing these my friend torqued down the headgakstes, not really torqued but he just used a wrench and tightened them hella after 300 miles of driving the new gaskets

[cruisen_15]

they were tightend more than 52 (lbs) for sure, id say about 60 or so

[TomsSVX]

Originally Posted by cruisen_15

they were tightend more than 52 (lbs) for sure, id say about 60 or so

Ugh... Why didn't you torque the heads... I mean, everyone knows... heads need to be torqued to a certain amount and in the proper order... Good luck

Tom

[jeffast]

Originally Posted by cruisen_15

they were tightend more than 52 (lbs) for sure, id say about 60 or so

the problem isn't that you over torqued the heads people do that all the time, the problem is that you went out of sequence, and went "hella" tight.
the problem is that you used no torque spec so for all you know they were tigtend to 70ftlbs for one, and 120 for the other and you went out of sequence, which means combined with the fact, that you over torqued them, you almost certianly warped your heads.

also don't lie, you don't know what they were torqued to unless you put them on with a torque wrench.

[cruisen_15]

what do you meen dont lie? i didnt tighten them in the first place alright, and i say 60 lbs or so because when i tourqed bolts to 52 lbs i knew the feeling so i knew that some bolts were past 52 by far

Originally Posted by jeffast

the problem isn't that you over torqued the heads people do that all the time, the problem is that you went out of sequence, and went "hella" tight.
the problem is that you used no torque spec so for all you know they were tigtend to 70ftlbs for one, and 120 for the other and you went out of sequence, which means combined with the fact, that you over torqued them, you almost certianly warped your heads.

also don't lie, you don't know what they were torqued to unless you put them on with a torque wrench.

[TomsSVX]

hold... so you tighten the bolts in order to 52 ft/lbs and just left it at that?? There is a sequence to follow.

1. Tighten all bolts to 22 ft/lbs in order
2. Tighten all bolts to 51 ft/lbs in order
3. Loosen all bolts 180* in order
4. Loosen all bolts 180*in order
5. Tighten bolts 1 & 2 to 27 ft/lbs
6. Tighten bolts 3,4,5,6 to 14 ft/lbs
7. Tighten all bolts 90*in order
8. Tighten all bolts and additional 90*in order

This is the kind of stuff you should know before you even think about replacing a head

Tom

[cruisen_15]

uhg im not that good at this stuff yet. i dont understand the whole torqing procedure i think ill just have a shop do it

[TomsSVX]

I don't think you understand, You are going to need to have the heads checked and new gaskets fitted.

Future advice, don't dive into something until you have a decent understanding of the work involved

Tom

[SVXRide]

sorry, but ....

[cruisen_15]

i just called a shop called pacific import auto and they are a really good shop and i told them whats happening on my legacy, oh did i mention theres oil in the coolant? well i told them that and they said they garuntee my oil cooler is bad but im going to take it to them so they can diagnose whats wrong