Question about 1986 Chevrolet S-10 Blazer

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I need help on how to take off the Exhaust pipe on my 86 S10 Blazer 2.8L 4WD... I'm trying to replace my rod bearings but i need to take off the oil pan.. which i tried to take off the starter, the cross member and bell housing.. but the exhaust pipe is in the way to remove anything. I know where the bolts are but it its held in place by springs as well.. i sprayed WD-40 constantly and it wont budge either way I turn it. Is there a certain way I have to do it? Is there a trick to it? I couldn't find anything about it

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  • metallicaboy Sep 17, 2010

    If I can get it hot enough would it come off ?

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  • Chevrolet Master
  • 2,019 Answers

Exhaust almost always gets so rusty that heat is required.
I doubt you can get it hot enough without oxi-acetyline.
If you try brute force, the bolts might just snap.

Posted on Sep 17, 2010

  • Kirk Augustin
    Kirk Augustin Sep 17, 2010

    Yes, with enough heat it will come off. But you have to heat it in the right place. The bolts thread into the manifold I believe, so you need to heat the part where the bolt threads in.
    If that is a nut instead of the cast manifold, it is much easier. In fact, then you could just split the nut with a chisel. Heating the bolt itself will not help, and will only serve to make it more likely to snap. Getting it alternately hot and then chilled with WD40 helps. The expansion and contraction washes the rust out.

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