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Posted

I need new exhaust on my 92? 250 Timberwolf. I am afraid that I will snap the bolts off in the head when I try to loosen them. I was wondering if it might be better to warm the engine up first as the aluminum should expand more than the steel bolts

Posted

these are blind bolts, into the head. penetrating oil isn't going to help. I think I'm just going to try and adapt the old pipe to the new without taking the flange loose. 

Posted

Are they  bolts  or  studs? Usually such  as exhaust  manifolds  or   pipes  in the  case of   single  cylinder  engines are  connected  using  studs into the  engine  and  nuts  to  secure  the  pipe to  the  exhaust ..   Some  penetrating  oils  will wick  into  nuts ,  studs  or  even  blind  bolts ..  Warming  the  engine  might  help,  but  be  careful  of  fire  after  spraying  penetrating  oil. If  the  stud nuts  or   bolts  don't  break  loose   fairly easily , try  tightening a  little  and  then  loosening .. "rock"  them  a  little  without  over torquing in  either  direction  also  helps  break  a stubborn  bolt/ nut  loose.

  • 7 months later...
Posted
10 hours ago, Pete van veen said:

Heat up studs then spray with penetrating oil it wil follow the treads in once colded it will usually come out

Heat always helps. I usually use mapp gas. 🔥

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