Regearing

[BlackYJ]

I want more info on the Cam mods.

Go to the Crane Cams website and all the info is there.  There is a guy I wheel with that put a performance cam in his 4.0L with 33s, and the freakin' thing goes.  When he steps on the skinny pedal, it throws you back in your seat.  I think it is defnitely worth the money because cams are only about $250.

[redbull]

Go to the Crane Cams website and all the info is there.  

This the one? Linky

[Rookie]

more options here

[Milan]

Well you missed my point somewhat bnine, though I appreciate the info you provided. Sure its old and heavy. But my point was "so what?". It does not need anything new and yet it works as well as or better than most newer engine designs. The distributorless ignition was just an example of that something not really needed and only making the system more complex with no real gain anywhere. Aluminum heads and blocks, roller rockers, titanium valves, etc. Yeah I like them but guess what? They don't seem to give the new engines better fuel economy than that old iron block 6. They just make the engines they replaced better. Well then put the same stuff in the 6 and it will also be better...again. Just because it's old does not mean it's bad and just because it's old and there's newer stuff out there it does not mean it needs to be replaced....is all I was getting at.

Just like some of us, Apex....:D:D

[apex]

:lol:  :lol:  :lol:

[Bnine]

Well you missed my point somewhat bnine, though I appreciate the info you provided. Sure its old and heavy. But my point was "so what?". It does not need anything new and yet it works as well as or better than most newer engine designs. The distributorless ignition was just an example of that something not really needed and only making the system more complex with no real gain anywhere. Aluminum heads and blocks, roller rockers, titanium valves, etc. Yeah I like them but guess what? They don't seem to give the new engines better fuel economy than that old iron block 6. They just make the engines they replaced better. Well then put the same stuff in the 6 and it will also be better...again. Just because it's old does not mean it's bad and just because it's old and there's newer stuff out there it does not mean it needs to be replaced....is all I was getting at.

Just like some of us, Apex....:D:D

Oh ya, I agree with you 100%, its definately a "not broke so dont fix it" type of motor.

The only benefit I see to the new ignition is sealing and and some room under the hood, as in not looking so busy.

Its true lots of these fancy motors see similar milage to what the old six does.

The big difference is efficiency. For some of their 25 mpgs they are making motors put out 250 plus hp.

Or in the extreme cases like a vette, you have a 400 horse sbc that gets 22 on the highway.

Im sure if similar upgrades were ever added to the l6 you would see similar results. Basically the same milage, just better hp and torque for that mileage. They have already shown that trend over the years. The mileage has never changed by a whole lot, but they do seem to squeeze a little more power out of them as time goes on.

I also agree it doesnt need replacing. I personally love the simple straight forward approach used in our jeeps. From the age old proven motor, to not having to worry about power window and abs systems.

Sort of off topic, but I just had a co worker pay 1800$ for an abs controller on a chev half ton with 30k on it. Lucky for us we dont have to deal with situations like that with our "old" tractor motors, and relatively simple in todays standards jeeps

[Milan]

Oh ya, I agree with you 100%, its definately a "not broke so dont fix it" type of motor.

The only benefit I see to the new ignition is sealing and and some room under the hood, as in not looking so busy.

Yup.

Its true lots of these fancy motors see similar milage to what the old six does.

The big difference is efficiency. For some of their 25 mpgs they are making motors put out 250 plus hp.

Yup.

Im sure if similar upgrades were ever added to the l6 you would see similar results. Basically the same milage, just better hp and torque for that mileage. They have already shown that trend over the years. The mileage has never changed by a whole lot, but they do seem to squeeze a little more power out of them as time goes on.

Yup.

I also agree it doesnt need replacing. I personally love the simple straight forward approach used in our jeeps. From the age old proven motor, to not having to worry about power window and abs systems.

Sort of off topic, but I just had a co worker pay 1800$ for an abs controller on a chev half ton with 30k on it. Lucky for us we dont have to deal with situations like that with our "old" tractor motors, and relatively simple in todays standards jeeps

Yup.

No that there's anything wrong with disagreeing but it's nice to be able to agree.

[ryetarded]

I got 35's on my 01 tj auto with 35" pro comp tires .. i have it geared with 4:88 and like everyone else i still get bad gas milege

on the highway i get 450 kms to 60 L of gas at 105kph with cruise on . my rpms sit at 2900 if i go 120 i get about 300 kms to 60L of gas at 3200 rpms

[jgrreed]

so... i just put 31" a/t's on my 01 TJ Sport (4.0L) manual transmission.

should i re-gear now?

lol, i swear if anybody has a computer question, i can help... but i'm lost here with this stuff.

i'll owe lots of people free computer tech support if they can help me out!

-Andre

Hey Andre,

I've been running BFG 31"s for about 3 years now on my '01 TJ Sport with 3.07's and a 2" daystar lift.  It hasn't been the end of the world.  I get about 440km out of a tank of gas (~18-20mpg).  5th gear is pretty much useless without a downhill pitch and a tailwind though!!!.  Power's good in town in gears 1-4.  I did add a K&N cone, a big intake, throttle body spacer, and Banks exhaust.  I'm going to regear (probably 4.10's or 4.56's) this summer and go to 33"s, and I'll be stopping there.  If I were you, I'd either wait like I did, or if you want to regear now, gear to what you think your ultimate tire size will be.  Also, think about whether or not you want lockers, and you might as well do that when your diff's are open.  Going to 33's is a big step because of the gears, lockers (if you want), need for bigger rims, the tires, bigger spare tire carrier, maybe flares, lift kit, etc.  It's sort of all or none IMO.  

Anyway, hope that helps.

BTW, I hate PC's, and will be ordering my new MacBook Pro on the same day as my gears!!!

-J.

[tjd60]

I got 35's on my 01 tj auto with 35" pro comp tires .. i have it geared with 4:88 and like everyone else i still get bad gas milege

on the highway i get 450 kms to 60 L of gas at 105kph with cruise on . my rpms sit at 2900 if i go 120 i get about 300 kms to 60L of gas at 3200 rpms

I think that you are overlooking some other aspects of why you may be getting less that average mileage from your rig, although you should be quite happy if your getting 450k's out of a tank.  I would be.  

The jeep is not the most aerodynamic vehical on the road. :wink:  And putting a lift kit on and adding 35's will add all sorts of negative impact on the aerodynamics of a jeep.  Plus the weight of the extra components and the extra weight of the tires and the additional resistance of the tires on the road and the additional wind they have to push.  

Like Milan was saying before.  There are not too many new jeeps on the road that are getting better milage then you, even if their brand new. :wink: