Tackling the demon bolt...

Sh0velMan · 08-22-2013, 11:58 AM

Quote:

Originally Posted by Leuz

OP, so I just fought with these bolts last week. It took me 3 days to get those demon bolts off trying everything. I tried tons of options ($$$). This is what worked for me.
- 6 sided 14mm socket, 3/8" as otherwise it won't fit
- 1/2" to 3/8" adaptor
- 1/2 ft 1/2" extension + another 1/2" extension to be able to reach out of the engine bay. The key here is to have as few extensions as possible 2x1/2ft would be ideal I guess
- 27" 1/2" breaker bar (the one you can find at harbor freight)
- gallons of pb blaster, wd40 whatever you have
- 3 days
The driver side was what took me longer as it seemed it did not want to come out. Finally it loudly snapped and came off. The passenger side didn't snap, it literally "broke in half" from the torque I applied to it luckily it broke towards the end of the nut stud so I was able to get the cat off.

Side note: the Service manual says those nuts have a torque of 43lb/ft, those demon bolts are NOT like that on this planet.

If you use all impact-rated parts, you can get away with a 3/8th size socket, but good luck finding 3/8ths inch impact rated tools.

I did them all with 1/2 inch drive stuff and didn't have any issue fitting a socket on.

I could literally give you a list of tools I used, as they all came from harbor freight, and you can order all the same stuff.

And the FSM is right about the torque rating... It's the heat that causes corrosion that makes these nuts difficult to get off.

If you drove a car home from the dealer and immediately went to take them off, they'd come right off, no big deal.

Cell · 08-22-2013, 12:07 PM

I am not even using a swivel. It is a straight shot with the intake manifold off. Does it matter if i use a deep socket or not? Or is that bolt too tall for a regular socket?

Sh0velMan · 08-22-2013, 12:10 PM

Quote:

Originally Posted by Cell

I am not even using a swivel. It is a straight shot with the intake manifold off. Does it matter if i use a deep socket or not? Or is that bolt too tall for a regular socket?

Hmm. I'd probably use a deep impact socket anyway, just to be sure.

If you have a straight shot (meaning the socket/extensions are exactly perpendicular to the nut's install plane) and you're using all half inch tools with an impact socket and 24+ inches of breaker and you aren't moving anything...

Man up, eat some wheaties, something.

(I'm just teasing. Just put more PB on them and keep trying.)

critical · 08-22-2013, 12:56 PM

Quote:

Originally Posted by Cell

I am not even using a swivel. It is a straight shot with the intake manifold off. Does it matter if i use a deep socket or not? Or is that bolt too tall for a regular socket?

use a deep impact socket. there's no way you're staying flush with the bolt not having swivel extensions, nor having a deep impact socket.

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08-22-2013, 12:07 PM	#2 (permalink)
Cell A True Z Fanatic Join Date: Jan 2010 Location: Chicago Posts: 1,449 Drives: A Garbage Truck Rep Power: 22	I am not even using a swivel. It is a straight shot with the intake manifold off. Does it matter if i use a deep socket or not? Or is that bolt too tall for a regular socket?