Trying to figure out gears for my tires. I want 235/85/16 (31.7" tall)
Do you think 4.56 gears would be too tall? Stock gears and tires give rpm of: 2006rpm at 70mph. 4.11 gears and 235 tires give: 70mph = 2056rpm
4.56 gears and 235 tires give 70mph = 2281 rpm.

For the CRD guys is that to much rpm at 70 mph?????

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2006 KJ CRD Ltd - Suncoast, GDE Eco, EGR Delete, After market T-Stat, Skid Row skids, V6 airbox, 2.5" Turbo back
2005 KJ CRD Sport-Suncoast, Transco, GDE Hot-GDE Trans, EGR Delete, Skid Row skids, V6 airbox, 2.5" Turbo back, After market S-Stat
1987 Suzuki LWB Samurai -diesel powered, custom 4 link coil suspension 38.5 SX Swampers

So you're going solid front axle in your CRD? Cool

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

You're being a wise guy, I think. No I wasn't planning on it.

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2006 KJ CRD Ltd - Suncoast, GDE Eco, EGR Delete, After market T-Stat, Skid Row skids, V6 airbox, 2.5" Turbo back
2005 KJ CRD Sport-Suncoast, Transco, GDE Hot-GDE Trans, EGR Delete, Skid Row skids, V6 airbox, 2.5" Turbo back, After market S-Stat
1987 Suzuki LWB Samurai -diesel powered, custom 4 link coil suspension 38.5 SX Swampers

No not being a wise guy but that would be the only way to run 4.56 gears in a CRD Liberty so thought you were heading that way , sorry

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

No offense meant. Why is that the only way to run those gears? Ifs or not isn't a dana 30 a Dana 30?

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2006 KJ CRD Ltd - Suncoast, GDE Eco, EGR Delete, After market T-Stat, Skid Row skids, V6 airbox, 2.5" Turbo back
2005 KJ CRD Sport-Suncoast, Transco, GDE Hot-GDE Trans, EGR Delete, Skid Row skids, V6 airbox, 2.5" Turbo back, After market S-Stat
1987 Suzuki LWB Samurai -diesel powered, custom 4 link coil suspension 38.5 SX Swampers

not quite, its a Dana 30 A which makes it just a little different so 4.10s are it, the lowest they go, now the new Liberty KKs can go deeper due to some design changes but the KJs not so lucky or there would be way more running around with lower gears than 4.10s ...sucks doesn't it!

Tom

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

The front diff in the 2008+ will take standard Dana 30 gears, but the gears for the D30A in the 2002-2007 are unique to this diff. They only were made by Dana Spicer and they only made three versions, 3:55 3:73 and 4:10

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2005 CRD "Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.

The CRD engine will spin all day at 2300 rpm - did that on I10 (80mph)
but you'll get 15mpg doing it.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

From Salt Lake City to Helena, Montana. 521 miles I ususally travel at 85mph (2400 rpm) Last Night the lying EVIC said 29mpg but it will calculate out to about 24mpg.

i have taken the libby off road a few times not rock crawing but i have found that it has plenty of power. I was actually looking for a wrecked v6 5sp and get the gears out of it as i think that those came with the 3.42 ratio.

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'05 CRD Limited
Lt. Khaki
235's 75R16 -
InMotion Stage 2
SEGR - runnin' good
Cummings Lift pump
Fia - Winter / Summer Cover
Turbo Timer

You don't need to regear when you have a CRD. You can't fit big enough tires under the KJ body to make your CRD a dog. Just get a tuner and it will make up for any perceived power loss.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.