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940 Stock Diff?

FARMPLATES

New member
Joined
Feb 9, 2023
1992 Volvo 940 DL. Can't for the life of me find out what type of differential it came stock with. I know the Turbo had the option for a factory LSD but that's pretty much the extent of my knowledge. Thank you in advance for any info
 
I jack up the rear from the diff, put the car in park or gear, and spin 1 wheel as fast as I can. The diff will lock and stop the momentum the spinning wheel if it has a G80. A little easier than scraping off the road grime from the diff tag.
 
I jack up the rear from the diff, put the car in park or gear, and spin 1 wheel as fast as I can. The diff will lock and stop the momentum the spinning wheel if it has a G80. A little easier than scraping off the road grime from the diff tag.
The G80 doesn't always lock when you do what you are suggesting. The easiest way to test whether there is a locker or limited slip in the rear axle is to jack up one side of the rear axle using a floor jack under the trailing arm. Make sure all the jack wheels are pointed in the direction of travel for the car and none of the wheels are up against the tire. Start the car up and with your foot on the brake put the transmission in gear. Ease off the brake pedal. Obviously, if you have a manual trans 940, ease out the clutch. If the car is G80 equipped the rear tire will turn 2-3 revolutions and then the G80 will lock and start to move the car. If it has a limited slip installed it will try to move immediately.
 
All new info for me. The replies are much appreciated guys, thank you!
The G80 doesn't always lock when you do what you are suggesting. The easiest way to test whether there is a locker or limited slip in the rear axle is to jack up one side of the rear axle using a floor jack under the trailing arm. Make sure all the jack wheels are pointed in the direction of travel for the car and none of the wheels are up against the tire. Start the car up and with your foot on the brake put the transmission in gear. Ease off the brake pedal. Obviously, if you have a manual trans 940, ease out the clutch. If the car is G80 equipped the rear tire will turn 2-3 revolutions and then the G80 will lock and start to move the car. If it has a limited slip installed it will try to move immediately.
 
All new info for me. The replies are much appreciated guys, thank you!
All the 940 models had the option of a G80 locker. Here in the US market, Volvo installed the G80 in all Turbo 940 models. I have seen quite a few naturally aspirated 940s with the G80 in them as well. In those cases it was added to the order. In other markets even the turbo 940 did not have the G80 unless it was ordered as an option.
 
All 900 series in North America had G80 from factory. Turbo, non-turbo, 6 cyl, doesn't matter. They all had it. Whether it still works or not is a whole different discussion.
 
All 900 series in North America had G80 from factory. Turbo, non-turbo, 6 cyl, doesn't matter. They all had it. Whether it still works or not is a whole different discussion.
No, they didn't. Supposedly all Turbo 940s built for the US market had the G80 starting with th e1991 940. According to Volvo's own literature, from 1993 on all US market 940s had the G80 installed in them. Many people on here have had US market 940s that did not come with the G80. Also, according to Volvo, the G80 was only installed in the 960/S/V90 as standard equipment up through 1996. After that it was an option that the customer had to order and pay for. I have seen plenty of 960/S/V90s that do not have the G80.
 
No, they didn't. Supposedly all Turbo 940s built for the US market had the G80 starting with th e1991 940. According to Volvo's own literature, from 1993 on all US market 940s had the G80 installed in them. Many people on here have had US market 940s that did not come with the G80. Also, according to Volvo, the G80 was only installed in the 960/S/V90 as standard equipment up through 1996. After that it was an option that the customer had to order and pay for. I have seen plenty of 960/S/V90s that do not have the G80.
And that's strange, because in the Volvo brochures, they list a locking differential as standard equipment on all 900 series. I've personally never seen any 900 series Volvo without the locking diff, and I've owned a great number of them, all model years, turbos, non turbos, sedans, wagons, 960s with IRS and solid axles (the early wagons) and all of them have had locking diffs. I AM in Canada, so perhaps that skews things, but I've never seen one without it installed.
 
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