SpencerKemp
NAXJA Forum User
- Location
- Snohomish, WA
So I'm looking at this XJ with 31's but the lady is unsure if it's re-geared... is there any way to tell if it's re-geared with out ripping the axels open.
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How do I tell if a XJ is re-geared short of ripping it apart?
- Thread starter SpencerKemp
- Start date
xjcannon
NAXJA Forum User
- Location
- Brunswick, GA
put a mark on the rear driveshaft, turn the rear tires 1 full revolution, and count how many times the driveshaft turns.
nomoneysonny
NAXJA Forum User
- Location
- Kentucky
Verify that the speedo reads somewhat correct then pull the speedo gear.
dave92cherokee
NAXJA Forum User
- Location
- Lynchburg, TN
The speedo gear won't tell you anything about if it's been regeared or not like the tire spin method will. With it being on 31's it's highly unlikely to have been regeared if it had 3.55's in it.
VAhasnoWAVES
NAXJA Forum User
- Location
- Lake City, Mi
tire spin trick never works for me. if your looking to buy it... id want to take a look at the diffs anyway. you never know what youll find. offer to refill it and take a drain pan.
id be willing to bet its not geared with only 31s. and considering the person doesnt know... if it doesnt have much of an OD for an automatic, or 5th gear in a stock, id bet its stock ratio.
id be willing to bet its not geared with only 31s. and considering the person doesnt know... if it doesnt have much of an OD for an automatic, or 5th gear in a stock, id bet its stock ratio.
xcm
NAXJA Forum User
- Location
- Southern Oregon
ding ding, worst advice ever, ding ding.
as others have said, but spinning the tires does work for me.
Rod Knee
NAXJA Forum User
- Location
- Grand Jct., CO
nomoneysonny
NAXJA Forum User
- Location
- Kentucky
- Location
- Minneapolis, MN
Spin a tire, who can't count to 3.5 or maybe 4.1 ?
Darky
NAXJA Forum User
- Location
- 29 Palms, CA
It's far from being a for sure thing. Jacking it up and spinning the tire is a lot easier and more likely to give you an accurate idea.
DrMoab
NAXJA Forum User
- Location
- The Utah Backwater
Ya'll are giving a little bit of bad...or at least partial advice here.
You have to make sure BOTH tires are spinning together. If you spin one tire it won't give you an accurate count because the spider gears are counteracting what you are trying to do.
Jack it up, put it in netural, make sure both tires spin at exactly the same speed (this may require a helping hand)
If you spin the tire(S once and get 3.5 turns on the pinion, you have 3.55 gears. Spin them once and get 4 turns on the pinion, you have 4:11 gears. One turn and 4.5 on the pinion...4:55 gearing and so on.
You have to make sure BOTH tires are spinning together. If you spin one tire it won't give you an accurate count because the spider gears are counteracting what you are trying to do.
Jack it up, put it in netural, make sure both tires spin at exactly the same speed (this may require a helping hand)
If you spin the tire(S once and get 3.5 turns on the pinion, you have 3.55 gears. Spin them once and get 4 turns on the pinion, you have 4:11 gears. One turn and 4.5 on the pinion...4:55 gearing and so on.
nomoneysonny
NAXJA Forum User
- Location
- Kentucky
How is it not a sure thing? It's another gear in the drivetrain. xcm's not going to be able to spin both tires with his stubby troll arms so this is just another way of checking.
Skwerly
NAXJA Forum User
- Location
- Ash Fork, AZ (Freedom)
Right. Best way.
twodoorXJ
NAXJA Forum User
- Location
- northern new jersey
:doh:
muddeprived
NAXJA Forum User
- Location
- PA
So if the speedometer's 4 mph off, what gearing does it have? If it's 2 mph off, which gearing? 7 mph off, which gearing? Too complicated. People regear without touching the speedo gear too.
Just spin both tires and count the driveshaft revolutions. Simple.
Darky
NAXJA Forum User
- Location
- 29 Palms, CA
Do you know off hand how many teeth a 4.0 AX5 came with? How about an AW4? Did the NV3500 have a different tooth count from the Peugeot? There's at least three different stock tooth counts out there. That means there's at least that many different gears for each axle ratio as well. Jack it up and spin it and no matter what the setup, you know the answer.
nomoneysonny
NAXJA Forum User
- Location
- Kentucky
Whoa, I said verify speedo correctness. You could also work the algebra backwards to come up with the gearing but I'm not gonna hold yer dick through all that. We are talking about a 5-tooth difference between 3.55 and 4.10.
Go unplug your speedo gear and see if you can repeat this back to me without turning red in the face...:heart:
Darky
NAXJA Forum User
- Location
- 29 Palms, CA
Good logical response.
- Location
- Minneapolis, MN
WTF am I supposed to do with Algebra ?
What effin good is Algebra if the axle is under a wrecked Jeep, or not under any Jeep at all ?
Just count with one hand, while you spin a tire with the other. This works everytime. I might be stoopid, but I don't need math to tell the difference between 3.5, 4, or 4.5.
What effin good is Algebra if the axle is under a wrecked Jeep, or not under any Jeep at all ?
Just count with one hand, while you spin a tire with the other. This works everytime. I might be stoopid, but I don't need math to tell the difference between 3.5, 4, or 4.5.
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