Axle regear chart

[tjblair]

I know I have seen someone post a link for a regear chart on here. I have looked and looked and cant seem to find it:gear_huh2: I looked at it once and you would enter in your transmision ratio's and t case ratio's and it would tell you your final drive ratio's with different r&p ratio's. does anybody know this link or know where I can find it :100:


thanks

[Nothingface5384]

i dunno about jeeps and their gear selection but toyota is typicaly
4.88s for 33s 5.29s for 35s and up for i4 5speed..
autos are geared one step lower(numericly higher)
v6s would typicaly be geared one step higher..different engines vary due to powerband/power output

not what youre looking for but will give you an idea non the less

heres an rpm and tire calculator
http://www.ringpinion.com/Calc_RPM.aspx

[Nothingface5384]

heres a yj regear chart

http://www.wrangleryj.com/gear-ratio-guide

[tjblair]

Thanks, those help a bit. I am trying to price gears for the d60's I am putting under my tj. It is a 2.5L, and from what I can tell from those charts 5.38 should work out well with 40 in tires. Does that sound about right?

[Nothingface5384]

yes, that sounds good

[DiGGeR]

Below are optimal gearing to bring it back to stock like performance. As always, if you want a little more torque you can go with one gear set lower. On the other hand, if you cruise more, you can always go with one gear set higher. You will want to double check anything listed below with something like the Gear and Tire applet at www.jeeptech.com (http://www.jeeptech.com). ( http://www.jeeptech.com/javaAps/gta.html (http://www.jeeptech.com/javaAps/gta.html) ) You will need to know each gear ratio for the transmission, transfer case and rear axle. Once that's plugged in, it will chart out the RPM's for any given speed. For most you'll want to look around 3000 rpm for optimal power.

Here's the breakdown.

Engine Transmission Gears
(YJ Wrangler, TJ Wrangler, XJ Cherokee and MJ Comanche)

2.5L | Manual | 4.10/4.11:1
2.5L | Automatic | 3.73:1

Optimal Gearing:

Manual | Automatic | Tires
4.56 | 4.11 | 31 inch
4.88 | 4:56 | 32 inch
5.13 | 4.88 | 33 inch
5.38 | 5.13 | 35 inch
5.89 | 5.38 | 37 inch

Now there is a slight problem with the 2.4L's. Early on they used an NV1500 5-speed transmission with the same gears as the 2.5L. The automatic was a 4 speed with OD. Then later they came out with a 6-speed manual from the Mercedes. The stock gearing on the newest 2.4L's with the 6-speed is now 4.56.

Engine Transmission Gears
(TJ Wrangler, KJ Liberty)

2.4L | 5-speed Manual | 4.10/4.11:1*
2.4L | 3-Speed Auto | 3.73:1*
2.4L | 4-speed Auto | 3.73:1**
2.4L | 4-speed Auto | 4.56:1
2.4L | 6-speed Auto | 3.73:1**

(*use 2.5L Chart above.)

Optimal Gearing:

Manual | Automatic | Tires
4.88 | 4.88 | 31 inch
5.13 | 5.13 | 32 inch
5.38 | 5.38 | 33 inch
5.89 | 5.89 | 35 inch
*** | *** | 37 inch

** Optimal Gearing:

Manual | Automatic | Tires
4.10 | 4.10 | 31 inch
4.56 | 4.56 | 32 inch
4.88 | 4.88 | 33 inch
5.13 | 5.13 | 35 inch
5.38 | 5.38 | 37 inch
:040:

[tjblair]

Yah that's the post I had seen. I think 5.38's or 5.71's will be the ticket

[tjblair]

Anyone here running 39's or 40's that is also running a 4.0 or better yet a 2.5 that could give me some input on what ratio you are running?

[mxg342]

Paineszj over on the NEC board just put my old white YJ together with 42s and 5.13s. He had it out last weekend so you can ask him what he thinks.

[Jpdst29]

I looked at it once and you would enter in your transmision ratio's and t case ratio's and it would tell you your final drive ratio's with different r&p ratio's. does anybody know this link or know where I can find it :100:


thanks

here it is...

http://www.4lo.com/calc/gearratio.htm

[mudforblood]

Here's the calculator I like the most. It lets you compare two different setups at the same time.
http://www.grimmjeeper.com/gears.html

[tjblair]

Here's the calculator I like the most. It lets you compare two different setups at the same time.
http://www.grimmjeeper.com/gears.html
thanks!
That is by far the best chart. Very easy to use and very trick!

[doublejz]

you may have saw this one. I believe this was a reference chart for WJ

http://i200.photobucket.com/albums/aa152/Krupples26/noob%20buying%20guide/NoobTireGearsize2.jpg