Exhaust manifold bolts

[Discoverme]

Anyone have any pointers on changing the passenger exhaust manifold? The 3 bolts on the downpipe are stuck rock solid to the flange and without a lift, I have to do it from the top and have had no luck budging them. I have new bolts etc so I just need to get these 3 off and the other 8 shouldnt be a big deal. Any ideas on how to loosen them in that small cramped space?

 

[MTNHDWR]

I would first suggets coating the bolts with some anti-sieze compound and letting them soak for 10 to 15 min. You can find it any any auto store. It sometimes works much better then WD-40.
As far as the tight space I don't have much to suggest except for a couple knuckle extensions on your ratchet. Be careful not to strip the threads on the head. They are extremely delicate.

 

[RangeRoverHP]

Anyone have any pointers on changing the passenger exhaust manifold? The 3 bolts on the downpipe are stuck rock solid to the flange and without a lift, I have to do it from the top and have had no luck budging them. I have new bolts etc so I just need to get these 3 off and the other 8 shouldnt be a big deal. Any ideas on how to loosen them in that small cramped space?

Soak them with PB Blaster or the like and let it sit for a bit. Then, give them a try. If you're replacing the manifold, just turn till they snap. If you're replacing the manifold and have new hardware anyway, no biggie if they're snaped in the old one.

 

[Hoot]

if you are replacing the mainfold, jsut sanp them off, they can be a real pain in the ass to get off. I have read some folks on here liek to get under the down pipe and heat up the bolts with a torch to help get them free. if PB doesn' t work and you haveaccess to a torch yer golden.