A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Start with what year, engine and manual/auto you have, that usually points to the gearbox, transfer box and diffs fitted to it. If your pre 2005 its almost certainly the 3.9 ratio (if manual gearbox). after that year is usually 4.3.
Use the numbers you found in the link to input into grimmjeeper gear calculator (google it). It has a side by side comparison, showing wheel revolutions amongst other info. Very useful site. When I use it I try to compare my modified car to a standard one in the hope of keeping the gearing about right for all the changes.
J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp
2 turns on the rear prop and one turn on the wheel is 2:1.
As you can see, there is no diff ratio of 2:1, there is only 3.90 and 4.090
Which would be 3.9 turns of the prop to one of the wheel or 4.090 turns of the prop to one of the wheel.
Martin
2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
2 turns on the rear prop and one turn on the wheel is 2:1.
As you can see, there is no diff ratio of 2:1, there is only 3.90 and 4.090
Which would be 3.9 turns of the prop to one of the wheel or 4.090 turns of the prop to one of the wheel.
so Martin my jimny is 1998 manual ,do i try on low gear cause i tried to turn the wheel on normal drive and on which gear should i try to see if mine is 3.90 or 4.090
tks again for the help
if u worry u die if u dont worry u still die so why worry
Going on low range will make no difference, the diff is after the transfer box.
Trying to see the rotation difference between 3.9 and 4.09 is difficult
If you thoroughly clean the carrier case you can sometimes read the part number stamped on it
Sent from my Pixel 2 XL using Tapatalk
Martin
2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
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