Rear Subframe Bolt Refuses to Budge. Any Suggestions?

[kcac]

I'm trying to lower the subframe on my 1995 Cutlass, 3.4 dohc in order to replace the alternator.

 

Front subframe bolt came out fine. Rear one won't budge. I sprayed it with PB Blaster, yet still broke a socket trying to loosen the bolt. At this rate, I'm either going to break more sockets or round the head of the bolt until a socket will be useless.

 

Any suggestions on how to get this bolt out?

[Heza]

impact wrench

[kcac]

Ditched the 12 point socket and ratchet and used a 6 point socket and a breaker bar to finally get it loose.

[93cuttysupreme]

12 point sockets aren't that great, A 6 point with a breaker bar or pipe arround the ratchet will do the trick.

[joey b]

mine won't come loose, even with a 6 point, just twists its way off stripping out the bolt each attempt.

[Guest Gp crazy]

tourch it get it warm with propane torch or if you got it use oxy/settaline on low heat those bolts are a pain some times. but use blaster also and watch out for fire & smoke! good luck

[AWeb80]

watch out for fire & smoke! good luck

 

been there, done that

 

lol

[Guest Gp crazy]

Well, from what I have read the head of the bolt twists any ways so the strength of the bolt is now no good right?

Hold the engine up with a lift or engine holder.

Then lift the front of the frame where the other bolt is out already to release the psi. On the back bolt. see if that helps.

If not your going to break it either way then find 3 or 4 good (Not cheap ones) drill bits start with the small one then work your way up like you said you have one bolt out already so you know how big you have to go. You must go straight and not side ways. & once you get it out find a Tap and die set to clean out the threads use the bolt that's out to find a tap. it will be metric I hope this helps and good luck