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Re: Where to have work on my TJ done (lifting) [Re: TakeYourTopOff] #865538 02/06/08 12:45 AM
Joined: Jan 2000
Posts: 1,817
F
Fred Blackstone Offline
Body Damage is Cool
Quote
Well both now that you mention it, but I was specifically referring to high-centering my vehicle (that's a new term for me). I high-centered a few times, striking the skid plate that runs across the center of my jeep. Also going through one deep puddle I bottomed out my front suspension due to a fast approach coming out of the puddle, which had a steep incline at the end. Bottoming out the suspension due to excessive speed is something that I plan on avoiding as much as possible as it seems unneccessary. My concern with that puddle was that the Jeep I was following had trouble crawling out with 33" mud terrains and my stock 30" GY Wranglers probably would not have been able to climb out slowly, so instead of turning back at that point, or making ramps, or hooking up the tow hooks to his Jeep, I went for it. Barely bottomed out the suspension but either way will now be more cautious.

I understand your concern about getting over the incline on the other side of the puddle, but, next time I suggest taking it slow and giving the Jeep a chance to demonstrate its prowess. Your Jeep came with a limited slip differential in the rear axle, you need to experience the LSD's ability to climb over stuff at low gear/low range 4WD. Another suggestion would be to air down the tires to 15 pounds for added traction; at 15 lb. the ground clearance loss will be minimal. If you're using a tow strap with hooks at both ends, throw it away immediately before someone or your Jeep gets hit by one of these hooks; the only acceptable tow strap is the type with loops on the ends of the strap.

I was looking at the Teraflex lifts when I was going to get 33" tires, but lately I have been thinking about going 35", in which case I have to start my search over - maybe long arm.

Why 35" tires? You can run 31" tires on the Unlimited; 33" tires will only provide 1 1/2" of lift, but should be sufficient for almost all trails if you install a winch and purchase some recovery gear. Hold off on any purchases until you hookup with some other four wheelers is my standing recommendation. You need to pick the brains of the more savvy four wheelers. I suspect 35" tires will be way over built for Western Mass.

I know that when I say "my main concern" in regards to something - that I don't have the knowledge background to really know what I need to be concerned about, but with the 35's I am concerned about my gear ratio. I have 3.73 which I think will be fine but is as low as I would want to go. I know that now I shift out of 1st gear very quickly and am looking forward to getting a little more use out of it. When the time comes if the gears are really bothering me, or if I feel that I need the locking differentials, I will do both at the same time.

If you go to 33" or 35" tires, the gear ratio (ring and pinion gears) will need to be upgraded. The taller the tires the greater the dollars you'll have to spend escalates to properly modify your Jeep to fit the taller tires under the Jeep. Again, slow the vehicle down per your comments above and enjoy what you have; learn to finesse the Jeep over or through obstacles. Most importantly, keep the rubberside down. Getting a little air under the front tires is a great way to snap an axle.

I am going to buy a winch and bumper before or at the same time as I get lifted. Any recommendations on either or combo's? I bet I can find that info in the forum archives- I'll check there after this post, which is now...

Why do you want to replace the bumper? A winch can be mounted without installing an aftermarket bumper.


94 YJ, SOA, 2-1/2 Alcans, ARB-front, Detroit-Rear, 4.56:1 gears, Oasis Trailhead compressor, 4:1 Terra Lo, 37x12.50x15 SSR's, 8000 lb Ramsey, & etc.
Re: Where to have work on my TJ done (lifting) [Re: Fred Blackstone] #865539 02/06/08 09:50 PM
Joined: Jan 2008
Posts: 9
T
TakeYourTopOff Offline OP
Need a Spot
Hi Fred, thanks again for the reply.

I have noticed how much of a difference lowering the tire pressure helps, and I am sticking to the slow approach now also. I am going to go out tonight hopefully for a little bit and get a little driving in on an undeveloped road and trails.

I will purchase the tow straps with the loops and not the hooks - they are the ones that I use on construction sites for hoisting so I am familiar with good straps.

Regarding the 35's: if I run my Unlimited with other TJ's having the same size tires and same lifts my breakover angle will be significantly less favorable due to the extended wheelbase. In order to be able to traverse the same terrain I need the additional height. I know that I am only gaining 1" on the differentials, but that's not my concern so much as breakover angle.

I plan on taking my Jeep all over New England and maybe more, not just in Mass. I might be assigned out in California in the near future for work which would be awesome!! Maybe not so great on the Jeep driving across country on 35's (if I have that done before I am dispatched).

Bumper: I want to get a new bumper to provide better protection to the front of my Jeep, which I assume is the reason most people install new bumpers. To be completely honest it is also for looks (mainly protection though)- I really like certain winch/bumper combos and I think that they make the Jeep look awesome! Functionality as we as personality!

I checked the archives for winches and found a few good threads on them, but also found something very interesting that I plan on using in the future: "buy the same parts as your buddies!" Not just because if someone else has it it must be good, but for the interchangeability. If we were to go out on the trail for a few days, with spare parts in case we break something, better off having the same parts if possible so it's more likely that someone will have the part needed. Maybe it sounds more useful than it actually will be but either way I feel like that's good advice.

So I was driving to work the other day and noticed parked one block away from our office a TJ Unlimited - same khaki color as mine, but this one had the hard top (matching khaki), chromed out tubular bumpers, winch, 31"s, and most importantly - RUBICON! It's basically the Jeep I was looking for for a month before settling on my TJ Unlimited. It isn't so much the chrome that I liked, but RUBICON w/ matching hard top!! The TJ Unlimited Rubicon's seem to be hard to find for sale - I guess that's a good sign for that model that people are holding on to them!


05 TJ Unlimited 6-spd
Re: Where to have work on my TJ done (lifting) [Re: TakeYourTopOff] #865540 02/06/08 10:27 PM
Joined: Nov 2004
Posts: 307
2000Trooper Offline
Mudrunner
Quote

but I was specifically referring to high-centering my vehicle


The stock transfer case hangs way low on the jeeps. Try researching the belly-up skid plates to give you more of a break over angle. Here is my jeep, If I had the stock skid plate I would have been hung up:

[Linked Image]

Quote

I was looking at the Teraflex lifts when I was going to get 33" tires, but lately I have been thinking about going 35", in which case I have to start my search over - maybe long arm.


If I had to start over, I would go for a long arm. I have a short arm 4ö with 8 adjustable arms. It flexes very well but the long arm is so much better for articulation.

I will agree that Rubicon Express makes some good products. When the times comes, I will be piecing my long arm setup from Clayton Manufacturing.

Quote

but with the 35's I am concerned about my gear ratio. I have 3.73 which I think will be fine but is as low as I would want to go.


I would stick with 33ö tires with that low gear.

Quote

I am going to buy a winch and bumper before or at the same time as I get lifted. Any recommendations on either or combo's?


Pick a bumper that will not hinder your approach angle. I have a small very basic 52ö bumper in the front and even with that I would sometimes scrape the front bumper on approach.

[Linked Image]
I added a winch plate to hold my T-Max winch. T-Max makes a good winch but everyone will always tell you to get a Warn.


Jaime
Re: Where to have work on my TJ done (lifting) [Re: TakeYourTopOff] #865541 02/06/08 11:46 PM
Joined: Jan 2000
Posts: 1,817
F
Fred Blackstone Offline
Body Damage is Cool
Quote
Hi Fred, thanks again for the reply.

I have noticed how much of a difference lowering the tire pressure helps, and I am sticking to the slow approach now also. I am going to go out tonight hopefully for a little bit and get a little driving in on an undeveloped road and trails.

I will purchase the tow straps with the loops and not the hooks - they are the ones that I use on construction sites for hoisting so I am familiar with good straps.

Regarding the 35's: if I run my Unlimited with other TJ's having the same size tires and same lifts my breakover angle will be significantly less favorable due to the extended wheelbase. In order to be able to traverse the same terrain I need the additional height. I know that I am only gaining 1" on the differentials, but that's not my concern so much as breakover angle.

It seems you're fixed on becoming a BigDog! I know too well the exhilaration of running a built Jeep over extreme difficult trails. To effectively and economically build such a Jeep, you need to plan every step and develop a logical overall complete plan to achieve this goal. It's a great deal of dollars when you're reliant on mechanics to install the necessary modifications to your Jeep. I suggest being cautious; take your time and gather the best technology. Another reason I suggest taking the time to develop an overall plan is to encourage four wheelers to consider the cost of the project against what they really want to do with their time after work. Yes, four wheeling is fun, but is that the lifestyle you want ten years from now? Too many four wheelers new-to-the-sport are impulsive in the beginning, spending large dollar amounts to have an extreme trail ready Jeep, only to have their enthusiasm quenched over time. Keep in mind that almost always the money invested in building a trail ready Jeep isn't likely to be retrievalable if the Jeep is sold.
Yes, the breakover angle with the Unlimited is an issue; but this hinderance is lessened by developing offroad driving skills. There are many Chrokees with the same wheelbase and do well with 31" tires offroad. 35" tires will give you about 2 1/2" of ground clearance for the differentials and an improved breakover angle. If 35" tires is what you have decided, take the time now to develop some offroad driving skills with other more experienced four wheelers as you put together your build-plan. Once you've completed your project, the Jeep will be nearly unstoppable! On most trails it will be almost like the camera commercial: point-and-shoot!

I plan on taking my Jeep all over New England and maybe more, not just in Mass. I might be assigned out in California in the near future for work which would be awesome!! Maybe not so great on the Jeep driving across country on 35's (if I have that done before I am dispatched).



reply: If your Jeep is built well, the 3000 plus mile trip will not be an issue, I suspect boredom traveling through the hinder-regions to the Rockies and then on to the Sierra Mountains will be the main obstacle. It might be smart to have the Jeep built in CA instead of MA, if it works out for you,where the sport is more prominent and the technology more practiced.




Bumper: I want to get a new bumper to provide better protection to the front of my Jeep, which I assume is the reason most people install new bumpers. To be completely honest it is also for looks (mainly protection though)- I really like certain winch/bumper combos and I think that they make the Jeep look awesome! Functionality as we as personality!

I checked the archives for winches and found a few good threads on them, but also found something very interesting that I plan on using in the future: "buy the same parts as your buddies!" Not just because if someone else has it it must be good, but for the interchangeability. If we were to go out on the trail for a few days, with spare parts in case we break something, better off having the same parts if possible so it's more likely that someone will have the part needed. Maybe it sounds more useful than it actually will be but either way I feel like that's good advice.



Reply: Some bumper-winch combinations are extremely heavy; this may be an important consideration. The 05 Unlimited has a good enough bumper, but, granted, it isn't the best protection against collisions with other vehicles or large game animals. Offroad, the original bumper is sufficient; there are very very few locations you can legally go off trail through the puckerbrush! Overall, for the winch, I suggest purchasing a winch with a series wound electric motor, integrated solenoid, and designed for FREQUENT use. I've read the same post/article about buying a winch that is the same as everyone else you commonly four wheel; I don't really buy into this theory. From experience, most four wheelers don't cannabalize their winch to allow you to have a working winch out on the trail; they simply winch you over an obstacle with their winch. Four wheelers rarely carry extra winch parts in their boonie box; most four wheelers carry little or only what they believe is necessary where cargo space is obviously limited. The winch marketplace has grown in the past five years; there are many suitable winches for offroad trail rigs these days.



So I was driving to work the other day and noticed parked one block away from our office a TJ Unlimited - same khaki color as mine, but this one had the hard top (matching khaki), chromed out tubular bumpers, winch, 31"s, and most importantly - RUBICON! It's basically the Jeep I was looking for for a month before settling on my TJ Unlimited. It isn't so much the chrome that I liked, but RUBICON w/ matching hard top!! The TJ Unlimited Rubicon's seem to be hard to find for sale - I guess that's a good sign for that model that people are holding on to them!

I've got the same color 05 Unlimited, only I have the automatic (It's what I call my town car). Yes, the Rubicon model is great. I suspect that even with it's limitations it's the way to go for a majority of four wheelers. Obviously, it's a lot less expensive to purchase a new Rubicon than build your own Jeep.


94 YJ, SOA, 2-1/2 Alcans, ARB-front, Detroit-Rear, 4.56:1 gears, Oasis Trailhead compressor, 4:1 Terra Lo, 37x12.50x15 SSR's, 8000 lb Ramsey, & etc.
Re: Where to have work on my TJ done (lifting) [Re: TakeYourTopOff] #865542 02/07/08 01:19 AM
Joined: Sep 2005
Posts: 1,087
BobRowe Offline
Body Damage is Cool
3.73 gears will NOT be fine with 35" tires. Fer cryin; out loud, I have 3.73 gears in my stock 2007 trailblazer, with stock tires. I would say that 4.10 gears would be minimum, and 4.56 would be even better, as long as your top gear is an overdrive.


1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.
Re: Where to have work on my TJ done (lifting) [Re: BobRowe] #865543 02/07/08 04:46 AM
Joined: Oct 2003
Posts: 7,768
BigJim Offline
Web Wheeler
Quote
3.73 gears will NOT be fine with 35" tires. Fer cryin; out loud, I have 3.73 gears in my stock 2007 trailblazer, with stock tires. I would say that 4.10 gears would be minimum, and 4.56 would be even better, as long as your top gear is an overdrive.


I agree!!
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />


professional bovine relocation specialist
Re: Where to have work on my TJ done (lifting) [Re: BobRowe] #865544 02/07/08 04:48 AM
Joined: Jan 2007
Posts: 534
DBL_DTY97TJ Offline
Rock Warrior
I didn't read too much of the post, but RW, you're going easy on him! Put it out there - 4.56 would be the minimum for those meats. And that's only if it spends most of it's time on the road. If it's more trail rig than DD I'd go 5.12. I'm assuming this is a 4.0L. Sorry, didn't read all of this one. When was the last time you heard someone say "I wish I hadn't geared it so low"?....About as much as you hear "gee, I wish I'd bought the 4 banger instead of the I6". <img src="/forums/images/graemlins/smile.gif" alt="" />


97tj, Shaved Ford 9 rear, 4:10's, New 35x12.5 BFG KM2's to test!, Warn x8000i, ARB's, Quick Disco's, Hand Throttle, & it's my DD. smile
Re: Where to have work on my TJ done (lifting) [Re: DBL_DTY97TJ] #865545 02/07/08 09:09 PM
Joined: Jan 2000
Posts: 1,817
F
Fred Blackstone Offline
Body Damage is Cool
Fer cryin; out loud ... <img src="/forums/images/graemlins/scared.gif" alt="" /> Bob, you surprised me!

DBL, BJ, and Bob ... TYTO is new to Jeeps and our sport; he's just beginning the learning curve. Give him a break and some encouragement. Everyone new-to-the-sport has to have a beginning point; and, he's well ahead of the process by asking questions here on 4x4wire, don't ya think?

I couldn't help but wonder myself if the 4.46:1 first gear on his 6-speed tranny may have influenced his thought that his present r&p gearset was adequate for taller tires. The 6-speed Unlimited is extremely slow from the start if one uses first gear.


94 YJ, SOA, 2-1/2 Alcans, ARB-front, Detroit-Rear, 4.56:1 gears, Oasis Trailhead compressor, 4:1 Terra Lo, 37x12.50x15 SSR's, 8000 lb Ramsey, & etc.
Re: Where to have work on my TJ done (lifting) [Re: DBL_DTY97TJ] #865546 02/07/08 09:28 PM
Joined: Jan 2008
Posts: 9
T
TakeYourTopOff Offline OP
Need a Spot
OK, let's see if I can respond to everyone...

Suspension: Everyone I have talked to says the long arms are the way to go, so I am going to go with that system. Expensive though. While we're on the subject of suspension - what is your opinions on getting a body lift along with the suspension lift? I know that the lower center of gravity gives the Jeep a better rollover angle, and I've heard that the body lift makes it easier to clean by creating the void between frame and body. Are there any other advantages / disadvantages that I should know about? Is it worth spending extra to get both rather than just suspension lift?

Right now (until you guys tell me otherwise, probably in a few hours) I am leaning towards the Teraflex 4" or 5" long arm suspension lift. If I got the 4" I would go with a 1" body lift. Tires: BFG A/T T/A KO 35" x 12.5" on my stock 15x8" wheels.

Trooper - Your bumper has a square hole in the center of it - is that to accept a trailer hitch? Do you actually use that for anything?

Fred - First, I know that my Jeep is already equiped to run trails, and that even slight modifications (31's) would make it even better equiped. But even with all the skill in the world, if I am riding with another TJ, and we have identical tires & lifts, I don't want to be the reason we have to turn back when my breakover angle becomes the limiting factor in traversing certain terrain.

Second, I agree that building in CA would be advantageous, if for nothing besides the gas money and tire life of the yet to be purchased 35's. Hopefully I will get sent out soon, if it happens. I want to get every detail of my customization decided before then so that I don't come back east with a Jeep built for the terrain out west.

So I am very concerned about this gear ratio now. I was not planning on regearing. I don't want to regear and I appreciate all of your input because maybe I will now. I am going to run it without regearing at first to see how it runs - you guys said to ride the rig and learn it before jumping in to something that might be unneccessary right? I know I'm kind of twisting your words on this but I am hesitant to spend the $$ when I might get by without...

One Question:
REAR ADJUSTABLE TRACK BAR - Should I get one?

So I'm fine tuning quite a bit now and I know what parts I want and some of them I have chosen manufacturers. This is getting much more expensive than I had hoped but if I'm going to create an off road machine I don't want any loose ends. This is my list of DEFINITES:

Lift: Long Arm Suspension: Teraflex
Tires: 35x12.5 BFG AT T/A KO
Winch: Warn (didn't pick a model yet)
Rocker guards:
Frame Mounted Spair Tire Rack:

This is my MAYBE's:
Bumpers: Warn
Regearing: 4.56
Locking Differentials:
Rear Adjustable Track Bar:

Does this seem right to everyone? Any other NECESSITIES?
Thanks again.

Didn't go out last night, guess I'm going to have to wait for this weekend.


05 TJ Unlimited 6-spd
Re: Where to have work on my TJ done (lifting) [Re: TakeYourTopOff] #865547 02/07/08 10:01 PM
Joined: Oct 2003
Posts: 7,768
BigJim Offline
Web Wheeler
Good informative post TYT.. What you need to really think about is the gear change.. As you posted your Jeep will lose top gear forever.. and depending on the ratio of 5th gear maybe that one too.
Changing the tire circumference means a great deal to the performance of the engine. As the circumference gets bigger it takes more rpm to turn the tire. Ideally at, say 60mph, you will need MORE RPM to turn the larger tire than you now have.. So at that same speed...say 1900 rpm changing the tire size will require 2100 rpm to act the same on the street.
I'm not gonna do the math for you but you get the idea. The street is where you will feel the difference most. Off road you will have low range and 1st gear for most obsticles. But from light to light and mostly when cruising.. It won't want to go.
It is pretty easy to do the math.. just get on the hiway and see how many rpm you have now at 60mph and then do the math to see how many you will have with 35's on there.. You will find that gear is lost forever and perhaps even 5th gear..
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />


professional bovine relocation specialist
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