Quote:
Originally Posted by Baba O'Riley
Okay thanks, one other thing please -- what's your preferred spray-on for loosening broken bolts? A couple car guys I know say WD-40 isn't that effective, one recommended PB Blaster aka B'laster. I'm going to use a bolt extractor on it but want to give it an overnight soak in something that will hopefully loosen it a little. It's the original manifold so of course it's pretty frozen in there.
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PB blaster or liquid wrench are both good penetrating oils, another brand thats very good but hard to find is kroil.
for heavily corroded/rusted/seized bolts, none of those will do much good... heat is the best option & will get out almost any stuck bolt/nut if used right. the idea is to heat/expand the outer area the bolt goes in to, then loosen the bolt while that area is still hot. if that doesnt work or you cant get to the outer area to apply enough heat, the bolt itself can be heated, to red hot if possible, then let cool before removing, the bolt expands when hot breaking free the rust bond, then when everything has cooled it should come out easier. sometimes a few times are needed.