1 USE AN IMPACT GUN! Set it to the lowest setting and even reduce the air pressure, let it sit there hammering away, until it slowly starts turning the bolt out. You should start at a setting that's too low and slowly work it up to just turning the bolt. This will keep the bolt in the elastic range of the material instead of causing it to yield or fail. Using a breaker bar is a sure way to twist it off or break the internal nut free. I've done this more times then I can count. It works great, you just need a little patience.
2 USE A TAP! If you can get the bolt out run a tap through to clean things up and hopefully straighten out enough of the threads to get a good hold.
OP seems like he's probably thought about this, but for anyone reading this please PLEASE don't follow the advice below. Impact guns aren't the enemy, not knowing how to use them is.
Quote:
Originally Posted by gmookher
indeed, this can be a job that requires some skill level, i'd say you had your turn. seek help before you go a cuttin, please.
1-do not use impact on these in or out.
2-go thru the forum and find a wrecked frs or brz and obtain a set of the bolts you need first
.
seriously.
3-BEFORE you go cutting into the car, try taking the old bolt out, get some PB blaster to make removal with breaker bar easier. get in there and look at the threads inside nut, they may not be as bad as you think, may be recoverable with a tap, be gentle, really gentle
4-if youre confident in your skills go to a shop that is capable - most any subie or import shop should be able to do this if the threads are good, otherwise I suggest a good frame and body shop for doing that sort of thread assessment tapping or welding correctly
5-try and see if you can get a fresh bolt to thread into the hole if inserted at right angle, or resort to tap, remove subframe if needed
I see no need to cut out that bolt. yet.
|