freeing rusted exhaust bolts

[400exboy2]

hey guys i was just wondering if you all have any ideas how to free rusted exhaust bolts? i have a 93 camry with 136,000 miles on it and stock exhaust on it and i have a bad oil pan leak and it says in my haynes manuel that i have to take off the front exhaust piece. well i attempted to do it today but i couldnt break the bolts loose at the manifold. i put PB blaster on there and let it soak in but i still couldnt get them off.also i couldnt get the bolts off from the cat. converter but im just going to get the saw-saw and cut the bolts and put new ones anyone have any ideas? also one more last question does anyone know if you can use that stuff called lucas its supposed to fix leaks on a oil leak? thanks guys

[FireFire]

Last time when I replace my exhaust, they burned it off...

[bronzemaxell]

Originally Posted by 400exboy2

hey guys i was just wondering if you all have any ideas how to free rusted exhaust bolts? i have a 93 camry with 136,000 miles on it and stock exhaust on it and i have a bad oil pan leak and it says in my haynes manuel that i have to take off the front exhaust piece. well i attempted to do it today but i couldnt break the bolts loose at the manifold. i put PB blaster on there and let it soak in but i still couldnt get them off.also i couldnt get the bolts off from the cat. converter but im just going to get the saw-saw and cut the bolts and put new ones anyone have any ideas? also one more last question does anyone know if you can use that stuff called lucas its supposed to fix leaks on a oil leak? thanks guys

i replaced oil pan on 94 camry, but i didn't have to take off the exhaust pipe, i used a flex head ratchet extension that i bought from walmart, but i guess if your 93 has exhaust on it's way, you can try to use drill to drill off the nut, not the bolt side, rather, begin with the smallest dril bit first on Nut, then move on to next size, take about 5 minutes, you can probably drill the whole nut off.

[ghettosled]

you cant get them off as in you dont have enough leverage to break them loose, or the heads are stripped? for extra leverage, try either getting a wrench with a longer handle or slip a pipe over the end of your wrench. if they are stripped, use a grinder and lop off the bolt head (assuming the bolt isnt threaded into the manifold, i cant remember off hand).

the saw-zall will be good for the bolts you are able to cut off.

in terms of lucas, the best bet is to fix whats leaking and not mess with any oil additives. fix problems correctly and dont patch them temporarily with a bandaid.

[JPaganel]

One word - heat. Nothing works as well as a properly applied welding torch.

[Grayguy]

Good old blue tipped wrench is your best bet

[shingouki808]

Try some brakekleen to start with. If that doesn't work try to get more leverage like suggested and break them. Worse comes to worse, (like it usually does) use the grinder to grind off the nut or if you're skilled enough and have a torch, just torch it off. For the oil pan, just check the gasket, and in worse case scenario change the oil pan. It will save you more money in the long run and you'll know it's fixed no matter what.