Using an exhaust jack on a turbo diesel OK?
Submitted: Tuesday, Jul 15, 2008 at 08:04
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Member - Oldplodder (QLD)
Have heard it said that an exhaust jack (bag blown up by the exhaust) can damage the turbo with back pressure, or something like that. Is this true?
What to look out for?
Have the chance to get an exhaust jack at a good price, i.e. on the borrow for nix for the next trip. Is it worth considering?
This is on a 2.8 pajero (old style turbo), and may need to use it on my friends new D4D prado (variable vane turbo) if we get stuck.
Do I pack it or not? Have a hilift jack, but new 4wds are not as jack friendly as they used to be with curved body panels and plastic bumpers. :o)
Reply By: Wayne (NSW) - Tuesday, Jul 15, 2008 at 08:24
Tuesday, Jul 15, 2008 at 08:24
John,
I have used the exhaust jack on petrol, non turbo and turbo powered vehicles with out any problems. (
Driver Training).
I have also found that a turbo vehicle pumps the exhaust jack up the best.
Just be careful when releasing the cone from the exhaust pipe that you don't get a face full of soot.
As you say the high lift jack is very limited and hard to carry. Take the exhaust jack and chances are that you will not have to use it.
Wayne
AnswerID:
315383
Follow Up By: Member - Oldplodder (QLD) - Tuesday, Jul 15, 2008 at 08:40
Tuesday, Jul 15, 2008 at 08:40
Thanks Wayne,
The hilift works on my side steps and bumper bars but not so good on the prado.
Might leave the hilift at home this trip.
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Reply By: Member - Phil G (SA) - Tuesday, Jul 15, 2008 at 09:37
Tuesday, Jul 15, 2008 at 09:37
I did hear the same thing from a 4wd mechanic. I made up an adapter so I can use my air compressor instead. So the exhaust jack goes up slower. Have to make sure you don't leave it running and overinflate the bag. I made this up a few years ago, but haven't used the airbag since. I have to admit to thinking they are a pretty useless piece of recovery gear, but I have rigid high lift jack points on all 4 corners, and I do use my highlift as a beadbreaker.
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Follow Up By: Member - Oldplodder (QLD) - Tuesday, Jul 15, 2008 at 10:48
Tuesday, Jul 15, 2008 at 10:48
Thanks Phil,
Also makes me wonder if the diesel / soot in the exhaust is any good for the plastic in the bag.
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Follow Up By: Member - Phil G (SA) - Tuesday, Jul 15, 2008 at 11:20
Tuesday, Jul 15, 2008 at 11:20
It was a simple thing to make. I just welded a washer onto a piece of pipe and used a tubeless valve.
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Reply By: Member - Kiwi Kia - Tuesday, Jul 15, 2008 at 12:10
Tuesday, Jul 15, 2008 at 12:10
It's another urban myth Oldplodder, use your airbag. Have you tried it out yet ? You need to place them so that it will lift where you want but also won't be in your way when you are working. As has already been noted it's easy to get a face full of soot. You also have to hold the funnel fairly tight (push hard) over the exhaust pipe. If you have a damaged exhaust (hole in it) then the jack won't work. Its great as an auxiliary but I would not be without the normal vehicle jack as
well.
AnswerID:
315405
Follow Up By: Member - Oldplodder (QLD) - Tuesday, Jul 15, 2008 at 13:00
Tuesday, Jul 15, 2008 at 13:00
Thanks ,
Yes, still have the bottle hydraulic jack in with a couple of jacking plates.
Carry a piece of 300x300x25 hardwood and another block of 250x250x75 oregon. Wouldn't travel without them.
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Reply By: Member - Footloose - Tuesday, Jul 15, 2008 at 12:22
Tuesday, Jul 15, 2008 at 12:22
I can vouche for that face full of soot. It's really a two man operation. Handy but I wouldn't rely on it unless I had to.
AnswerID:
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Follow Up By: Member - Chris R (NSW) - Wednesday, Jul 16, 2008 at 09:24
Wednesday, Jul 16, 2008 at 09:24
Seems soot in the face is all the rage - it certainly was when I did it. Parnter saw the funny side - it took me a while longer.
I really didn't nee the exhaust jack on that occasion - and consider that it is indeed a pretty useless additon to recovery gear for my situation.
Cheers
Chris
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Reply By: Hairy (NT) - Tuesday, Jul 15, 2008 at 13:15
Tuesday, Jul 15, 2008 at 13:15
Gday,
Dont want to scare you off of them....But I have seen one blow (not common, but possible)....and when they do your car comes pretty quick, so make sure your not under it!
Cheers
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Reply By: Member -Signman - Tuesday, Jul 15, 2008 at 13:58
Tuesday, Jul 15, 2008 at 13:58
And make sure there's no screw points or sharp edges where the bag goes under the vehicle.
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Follow Up By: Member - Mark G (NSW) - Tuesday, Jul 15, 2008 at 16:08
Tuesday, Jul 15, 2008 at 16:08
SIGMAN; if you buy a decent brand bag they should come with a couple of mats to put top and bottom of the bag.
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Follow Up By: Member - Oldplodder (QLD) - Tuesday, Jul 15, 2008 at 16:27
Tuesday, Jul 15, 2008 at 16:27
Thanks Signman, thinking the same thing.
Always have a couple of old tarps in the car just in case.
You know, a blind for a
creek crossing, something to crawl on to access under the car, you never know when they might be useful. :o)
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