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I have been worrying about how to remove the remaining turbo exhaust housing bolts for a while now. I broke off 5 bolts for the swingvalve and 2 for the exhaust housing. I have been spraying them with Kroil penetrating oil for several weeks. I also bought some Freeze off from CRC at the hardware. It is penetrating oil that gets cold as you spray it on the bolt. These bolts are really tricky because you can only get an open end wrench on the bolt because of the housing being in the way on the turbo. I rounded off one bolt already. What I did to finally make some progress is to heat the housing up directly around the bolt with some mapp gas (similiar to propane but hotter). I did that for a couple minutes then sprayed it with the freeze off. It smoked like a bitch. Then I sprayed a little kroil penetrating oil on the bolt (because it's supposed to be the best). Then I repeated the process 2 more times. I was able to loosen 3 of the bolts. The last one is rounded so it will take a little more time.
Just thought I would share my success.
Just thought I would share my success.