Imperial Homepage -> Repair -> Exhaust -> Bolts
Question from Dan:
Are exhaust bolts special hardened ones or can you use common garden-variety bolts? They look to be hardened, with a fine, rather than coarse thread to me.
If you are planing on changing exhaust manifolds on any car you must spray the nuts and bolt at least 3 times with a good penatrating oil. Liquid wrench, lock nut, W-D 40 or other penatrating oil. I do it once a day for three seperate days. You will be a lot happier with the results. Heated bolts like exhaust bolts twist off real easy. So be very careful.
The absolute best rust buster that I have ever used is called PB Blaster. Over the years of running an auto repair shop, I've used several different solutions and found that this stuff works the best. Spray it on and give it some time to work. You'll be amazed at the results.
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