Has anyone tried removing bushings with Dry Ice
#1
Has anyone tried removing bushings with Dry Ice
Just wounder if anyone has done such a thing before. Just thinking back to the threads of people removing tar out of their cars with dry ice, I wounder if you could sebmerge a part in dry ice and it would snap off the metal. here in canada we don't really have dry ice like you guys do in the states ... but thats just a thought if anyone is willing to experiment.
#2
Rotary Enthusiast
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It is easy to get bushings out with either fire or a press. I dont' think that cooling down the bushing drasticly will make it come out easier, because it is such a tight fit. There isn't any glue or adhesion holding them in. Only pressure.
If I get a chance, when I do my bushings I will try leaving the arms in one of the -80 freezers at the lab and see if it helps when I press them out. I have a fealing that the metal will contract more then the rubber and they will be harder to remove.
If I get a chance, when I do my bushings I will try leaving the arms in one of the -80 freezers at the lab and see if it helps when I press them out. I have a fealing that the metal will contract more then the rubber and they will be harder to remove.
#3
see i would think that the rubber would contract more or maybe just the different rate of expansion/contraction would make the bushing un stuck from the surrounding area. Its just a thought since there seems to be quite a bit of bushing threads lately.
#4
love the braaaap
The idea might work, but its far more effective to burn the old bushings out. Sure it stinks like hell, but a hell of a lot easier. You would likely need liquid nitrogen to get the bushings cold enough that they would crack apart.
Oh ya, go to any Praxair facility. They carry dry ice.
Oh ya, go to any Praxair facility. They carry dry ice.
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#8
Old Fart Young at Heart
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Dry ice won't break the bond between the rubber and the metal, save your time. I told you I'd show you how to do it when I get up there, unless you're in a bigger hurry. If I had spare time and found an extra control arm, I'd do a write up, but it will be a while.
#9
GSSL-SE
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Drill em out, its easy as pie, and wont smell like a pile of burning tires.
Find the right drillbit, and once youve drilled enough holes to soften the bulk up, the bit will walk its way around the whole bushing and scrape the rubbers bond to the metal off.
This works like a frickin charm on the rear links, and works but is a bit trickier on the front control arms. Only way to go IMO!
Burning bushings out is naaaaaasty!!!!!!
Find the right drillbit, and once youve drilled enough holes to soften the bulk up, the bit will walk its way around the whole bushing and scrape the rubbers bond to the metal off.
This works like a frickin charm on the rear links, and works but is a bit trickier on the front control arms. Only way to go IMO!
Burning bushings out is naaaaaasty!!!!!!
#10
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I still think my little vice socket thing was the easiest for the front suspension arms... yea it was pretty ghetto but both arms took me 10 minutes at most.
https://www.rx7club.com/1st-generation-specific-1979-1985-18/tips-suspension-bushings-610272/
https://www.rx7club.com/1st-generation-specific-1979-1985-18/tips-suspension-bushings-610272/
#13
Originally Posted by trochoid
Dry ice won't break the bond between the rubber and the metal, save your time. I told you I'd show you how to do it when I get up there, unless you're in a bigger hurry. If I had spare time and found an extra control arm, I'd do a write up, but it will be a while.
I wasn't in any hurry about this ... I was just tossing this idea around seeing if anyone has done it.
#14
When removing bushings "anything goes", but i have always used a hydraulic press for all bushing work...and had a drink with wet ice in it, and occasionally smoked a cigarette too. Good thread.