doing a catback exhaust on an older car. Which is more likely to give success and not snap an exhaust stud - conventional socket by hand or an impact gun?
doing a catback exhaust on an older car. Which is more likely to give success and not snap an exhaust stud - conventional socket by hand or an impact gun?
Either way, I spend a few days soaking them with penetrating oil.
I would say impact - but I just assume they are going to break. I have almost never taken an exhaust system apart without breaking them.
Salt and heat are a great combination 
I've never broken one, but i do tend to make a LOT of "Snuts" or "Stolts."
92CelicaHalfTrac wrote: I've never broken one, but i do tend to make a LOT of "Snuts" or "Stolts."
I've had one break. I use lots of PB Blaster.
Loosen by hand with oil, heat and a few sharp hammer blows on the end of each fastener via the socket. With the impact you stand no chance of backing off if the fastener is shearing, a well calibrated hand can make multiple attempts with increasingly drastic heat/impact between torque applications.
All hail the hand.
by hand.
I snapped a stud with an impact driver by being trigger happy.
Apply heat!!!! Get it red and the bolts will usually come off with out damage to the studs (Map Gas Tourch is your friend)
Heat it orange first.
Or, my method - just break it, if it's weak enough to break then it doesn't deserve to be on the car.
Heat, Kroil, let cool.
Next day: Heat, Kroil, whack the nut w/ a drift and a hammer while it's hot, 6-point socket on hex, 12 point on 12 point nuts, breaker bar, off.
Knurled wrote: Heat it orange first. Or, my method - just break it, if it's weak enough to break then it doesn't deserve to be on the car.
QFT on both statements.
If the bolts are even somewhat accessible, I will usually hit them with PB a few days before I need to take them off while the engine is hot from a drive and let them cool.
Wire brush the threads before removing and work the nuts back and forth by hand if they jam up.
motomoron wrote: Heat, Kroil, let cool. Next day: Heat, Kroil, whack the nut w/ a drift and a hammer while it's hot, 6-point socket on hex, 12 point on 12 point nuts, breaker bar, off.
Heat and Kroil is my favorite combo, but I like the drift whack idea. I'll have to give that a try next time I'm cursed with an exhaust replacement.
They spin right off with hand tools if you get them glowing red.
By hand with PB Blaster and luck
93gsxturbo wrote: work the nuts back and forth by hand if they jam up.
Really? Tell me more, like your phone number for instance
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