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elevatorbernie Expert Date registered: Aug 2006 Location: Vancouver B.C. Canada Vehicle(s): 1989 280GE Posts: 1347 | smog test question I have take my G for a smog test. I'm worried because it involves driving it on a dynamometer. I remember someone saying never drive a G without the front wheels turning the front drive shaft, that it could damage the transfer case; due to lack of lubrication. Can anyone verfiy this to be fact? If yes, what are others doing in pollution controlled parts of the world, in regards to this type of test? The testing facility has a 4wheel drive dyno also, so running the test in four wheel drive could be an option. | ||
#49159 | |||
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amzimmy Elite Veteran Date registered: Apr 2006 Location: South Africa/Italy Vehicle(s): GD300 1981, Alfa GT 3,2 V6, Alfa Brera Q4 3,2 V6. Posts: 850 | RE: smog test question elevatorbernie - 10/16/2006 11:39 AM I have take my G for a smog test. I'm worried because it involves driving it on a dynamometer. I remember someone saying never drive a G without the front wheels turning the front drive shaft, that it could damage the transfer case; due to lack of lubrication. Can anyone verfiy this to be fact? If yes, what are others doing in pollution controlled parts of the world, in regards to this type of test? The testing facility has a 4wheel drive dyno also, so running the test in four wheel drive could be an option. I think that the front wheel have to turn (460) in 2H the prop shaft from the front axle has to turn in order to lubricate the TC ..... or am I wrong? I guess , if it is so, you have to shift in 4H and have rollers under the front wheels. Here in SA .......well, they look...... if it is SMOKING...... then it's "no good" .....if it isn't smoking.....then something is wrong with your engine!!!!;) amzimmy Edited by amzimmy 10/17/2006 6:08 AM | ||
#49161 - in reply to #49159 | |||
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dai Expert Date registered: Apr 2006 Location: Oregon USA Vehicle(s): 300GD 300TD BMW R100RS Landini 80F Posts: 2110 | Re: smog test question Run it on a 4WD dyno. It is unlikely that the time it would take to run a smog test would toast the T case but running without that front shaft turning in 2WD for a distance will oil starve key parts and can lead to catastrophic faliure. I have been running without the front shaft for quite a while but I keep the T case in 4WD so the oil pump in there is spinning. No problems. There are people on our forum that have damaged T cases due to oil starvation. It is a real problem and why there are no unlocking hubs on the G. To install an axle with unlocking hubs would require the use of a different T case. I think Q did just that on G Zilla. -Dai | ||
#49181 - in reply to #49161 | |||
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ewalberg Expert Date registered: Apr 2006 Location: Past: San Francisco. Present: Germany Vehicle(s): 2000 g500 Posts: 1887 | RE: smog test question in california our smog requires a dyno but it's only a 2wd dyno, so if it full time 4wd then you are exempt. The spirit of the exemption is that if your car needs all 4 wheels rotating to not suffer damage then you're exempt from the dyno portion. I would talk to them about it... sounds like you'd be exempt in cali from the dyno. | ||
#49187 - in reply to #49159 | |||
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ufotwuk Date registered: Dec 1899 Location: Vehicle(s): | Re: smog test question I had my 2002 G500 registered as a commercial vehicle and have not been required to get any smog tests. Phil | ||
#49283 - in reply to #49159 | |||
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Photoman Date registered: Apr 2006 Location: New Zealand Vehicle(s): 280GE, ML500, 280SE 3.5 | Re: smog test question We don't have any smog tests at all down here in NZ. In fact a lot of people take the cats out to improve performance. | ||
#49292 - in reply to #49159 | |||
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B280 Member Date registered: Jun 2006 Location: Vancouver,B.C. Vehicle(s): 1986 280ge Posts: 40 | Re: smog test question I'm in Vancouver and have had to test a couple of times. Just choose the 4 wheel drive lane and you'll have no problem. I was worried at first too, but no problems. The first time I was in the wrong lane and they told me to move over. Front and rear wheels are on rollers. Good luck. I had to take it twice last year. Biski. | ||
#49391 - in reply to #49159 | |||
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elevatorbernie Expert Date registered: Aug 2006 Location: Vancouver B.C. Canada Vehicle(s): 1989 280GE Posts: 1347 | Re: smog test question B280, did you run the test in 4wd or did the dyno rollers turn the front wheels in 2wd to lubricate the t-case? Edited by elevatorbernie 10/19/2006 2:59 AM | ||
#49422 - in reply to #49391 | |||
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cball Member Date registered: Apr 2006 Location: Vancouver, B.C. Vehicle(s): '86 280GE Posts: 44 | Re: smog test question Here in Vancouver the 4wd specific lane's rollers are tied together so the rear rollers spin the front ones for you. Chris. | ||
#49490 - in reply to #49422 | |||
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B280 Member Date registered: Jun 2006 Location: Vancouver,B.C. Vehicle(s): 1986 280ge Posts: 40 | Re: smog test question Chris is right, the front ones spin so no need for 4wd. Biski. | ||
#49503 - in reply to #49159 | |||
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elevatorbernie Expert Date registered: Aug 2006 Location: Vancouver B.C. Canada Vehicle(s): 1989 280GE Posts: 1347 | Re: smog test question Thanks to all for their replies. To the Vancouver members, thanks for the info about Aircare's dyno. We should all meet up one day. pm me Bernie. | ||
#49625 - in reply to #49503 | |||
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