WJ from 3.73 to 4.11 - parts list needed

Dark · 11-07-2008, 11:03 AM

Hi folks,

I am willing to replace the 3.73 in the front and rear of my 2002 WJ.
Running 33's in summer time and 32's during winter sucks w/ the stock ratio.
As it looks like, I got a 30 in front and the 44HD 8or whatever that was!?) in
rear.

So far so good. But I cannot find any detailed and complete info on what to
order. Ring and pinion - ok. But what else does one need. I think I remember
form the old YJ days that gears above X.XX need new innards...

Anyone w/ a detailed parts list on what to order? Since I will order the stuff
from the states I don't wanna return and re-order parts, but do it right
the first time.

Thanks in advance!

Greetings from Germany,
Dark.

nierace · 11-07-2008, 11:13 AM

You can send kolak a PM (Hes a vendor here on jeepforum) or send him a email at kolak@aol.com He can get you everything you need for great prices.

But overall for the parts you're looking at the ring & pinions and then the master install kits for both axles.

If you don't plan on going bigger than 33's the 4.10's will serve you well.

Dark · 11-07-2008, 11:35 AM

@nierace
Woooaaaw that was quick - thanks! Well I do know Nick from reading in the
forums and from selling great jeep parts. I always try to do a search first and
then post as this Q may be interesting for others as well.

Other than that I don't really wanna bother ppl w/ "stupid" Q's like this one.
But now that you suggested PM'ing him he'll blame it on ya.

I don't think that I will do anything larger than 32/33's. Beside that things
like these are really PITA stuff to do while under german emission and
inspection laws, this is "just" my daily. So 32's serve me pretty well while
drinving through city jungles.

**GraKee99** · 11-07-2008, 01:37 PM

Nick won't care if you ask him stupid question. Send him an email at Kolak@aol.com. He will respond faster than on here.

QuadraTokn · 11-07-2008, 01:41 PM

you only need the ring and pinion for each axle.

BUT it is HIGHLY recommended that you have some master install kits and even lockers installed at the same time. This is because since the shop is already tearing your entire diff apart to get to the pinion, it wont take them any longer to throw in some master install kits and lockers (they wont charge you more $$).

A vendor on this forum, CCOR, WILL be the CHEAPEST you can find diff parts. They order through Randy's Ring and Pinion and get a huge discount that they pass onto their customers. I will give you my axles if you can find a better price!

Dark · 11-07-2008, 02:00 PM

@GraKee99
Already did.

Quote:

Originally Posted by QuadraTokn

you only need the ring and pinion for each axle.

BUT it is HIGHLY recommended that you have some master install kits and even lockers installed at the same time. This is because since the shop is already tearing your entire diff apart to get to the pinion, it wont take them any longer to throw in some master install kits and lockers (they wont charge you more $$).

A vendor on this forum, CCOR, WILL be the CHEAPEST you can find diff parts. They order through Randy's Ring and Pinion and get a huge discount that they pass onto their customers. I will give you my axles if you can find a better price!

@QuadraTokn
Does that include shipping over the pond?

Thanks for the tip. Will contact him. As this is my daily and does normally not
get hardly driven o/r I will skip the lockers, but the kits are a must.

Oh and unfortunately they don't charge me any $$ but EUROs. Ouch.

**StrokedWJ** · 11-07-2008, 03:11 PM

Have you looked at the cost of doing this swap? IMHO, the small performance gain from 3.73's to 4.11's is not worth the $$$$ its gonna cost you. If you could find something around 4.27's, that'd be ideal. I've got 4.56's, 33's and the 4.0 and VERY happy I didn't do anything higher (numerically lower).

Dark · 11-07-2008, 03:28 PM

@YHC2000WJ
Well yes, I still do consider taking the 4.56. But I am unsure if that isn't a bit
too short as I do not take the Granny too much o/r, but do a lot of highway
driving and some trailer towing this beast here:

nierace · 11-07-2008, 03:31 PM

Yeah uhhh that's pretty beastly. F'n bad *** !

I still stand by what I said, 4.10's are the best gearing for a V8 dub with 33's.

**10achik** · 11-07-2008, 05:26 PM

Quote:

Originally Posted by nierace

Yeah uhhh that's pretty beastly. F'n bad *** !

I still stand by what I said, 4.10's are the best gearing for a V8 dub with 33's.

^ What he said

Dark · 11-08-2008, 03:23 PM

Thanks for the input, guys!

cmonson · 11-08-2008, 05:20 PM

3.73 to 4.11 is hardly going to be noticeable. go to 4.56 if you want a seat of the pnt change.

**10achik** · 11-08-2008, 05:54 PM

Quote:

Originally Posted by cmonson

3.73 to 4.11 is hardly going to be noticeable. go to 4.56 if you want a seat of the pnt change.

But it is noticable...I did it, and he said he would go no larger than 32's/33's, which means that with a V8 and 4.10's his speedo will be accurate and gearing wise it will be equal to stock. Had he said he wanted to go to 35's, 4.56s would be the way to go.

nierace · 11-08-2008, 07:23 PM

What Ken said.

Go use a gear calculator, you'll see 4.10's with a V8 and 33's are perfect. 3.73 to 4.10 is a bigger change than most think.

**Kolak** · 11-09-2008, 08:12 AM

A gear calculator shows rpms to be lower than stock with 33" tires and 4.11 gears.

With 4.56, at 70 mph, revs are just 100 rpm more.

In my opinion, 4.56 is correct for 33" tires.