What did you do to your ZJ today? - Page 1983 - JeepForum.com
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post #29731 of 44128 Old 01-21-2014, 10:42 PM
SchizophrenicMC
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1997 ZJ 
 
Join Date: May 2012
Location: Arlington
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Originally Posted by Platinum5nine View Post
Buy a new battery, its strange but a Jeep with a bad battery will crank strong and not stay running. Hold your foot on the gas and the alternator juices it up a little and it stays running. If you want to go back and forth, test it, trust the kid behind the counter in autozone to load test it properly, do this and that, go for it. In the end though you will end up with a new battery lol.
It's because the alternator is regulated by the PCM, which can't get a good reading on system voltage if the battery isn't in good enough condition to stabilize the voltage. So the PCM will run the alternator's voltage as low as possible to prevent damage. Therefore, it'll stall out because it doesn't have enough power to run all the EFI and ignition equipment on a dead battery. The battery that was in my Orvis when I went to test drive it would crank the engine over quickly, but if I revved it, it'd just die. So the dealer got a new battery dropped in and away we went.

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Originally Posted by WJ4x4LIFE View Post
It has been awhile, but in the process of selling the ZJ, and buying Toyota Land Cruiser to travel the U. S. of A!
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Burn the nonbeliever!
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Originally Posted by big98tnzj View Post
Thats treason. He should be impeached.

Sent from my tent in the woods using JeepForum
I like the Land Cruiser, especially as an Overlanding vehicle, but honestly, I think that's gotta be one of the big advantages to the Grand Cherokee is its ability to run a self-sustaining overland expedition, with all its extra power, space, and offroad capability. I guess the LC would have more cargo volume and has much more pedigree in overlanding, but come on man.


1997 Grand Cherokee Orvis Edition
1998 Grand Cherokee 5.9 Limited

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post #29732 of 44128 Old 01-21-2014, 10:52 PM
Syncityj
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Originally Posted by Hytek View Post
Sadly nothing. Anxiously awaiting my IRO care package from Kolak. The Niner's currently sitting @ 3.5“, after the short arms and spacers I'm hoping to net 4-4.5" and a more stable ride. Curious to know if I can stuff some 305/70's under there after. If so my Duratracs may be for sale soon.
A 305 should be close to a 32" tire, I think, you should have no problem.
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post #29733 of 44128 Old 01-22-2014, 02:38 AM
ejschultz
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Originally Posted by Syncityj View Post
A 305 should be close to a 32" tire, I think, you should have no problem.
Actually, a 305/70/16 is 32.8x12 (it'll vary a little by manufacturer but that's what it works out to mathematically). I don't know if that would work well on a 16x7 rim.

97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, bumpers, bunch o' skids, 31" Duratracs on 15x8s
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post #29734 of 44128 Old 01-22-2014, 05:02 AM
wkbear
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Got a little snow yesterday. Tried to back my wife's Sentra up the driveway (short but steep) while it was covered in about a half inch of snow with a little I've on it. Only got it half way up before it started spinning and sliding sideways.

So I parked it and got in the Jeep, went right up with just a little wheel spin. (5.2, 249) gotta love 'em! She made it to work with no issues this am.

Sent from...wait, where am I?

1995 Grand Cherokee Ltd., 5.2, 249, stock (for now)
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post #29735 of 44128 Old 01-22-2014, 06:25 AM
Hytek
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Quote:
Originally Posted by Syncityj View Post

A 305 should be close to a 32" tire, I think, you should have no problem.
Quote:
Originally Posted by ejschultz View Post

Actually, a 305/70/16 is 32.8x12 (it'll vary a little by manufacturer but that's what it works out to mathematically). I don't know if that would work well on a 16x7 rim.
I could try 285/75 instead, it's about the same height just skinnier. I'd like to get as wide as possible without worrying about breaking a bead. Trying to stay with the stock niner wheels if I can. If not then I'll wait a little longer until I can get some steelies in 16x8.

98 5.9 Limited - IRO 3.5", IRO short arms track bars Bilsteins, Addco, JK wheels, 255-75/17 BFG, Magnaflow, Flowmaster
04 Limited 4.7H.O QD, UC+BB, Bilsteins, 245/75-16 Duratracs Addco sway bar
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post #29736 of 44128 Old 01-22-2014, 06:32 AM
ejschultz
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Those are almost an inch skinnier. Mathematically, they work out to 11.2" wide and are still 32.8" tires, again it'll vary by manufacturer. Why keep 16s though? I went to 15x8s from my 16x7 TSi wheels because tires are cheaper for 15s than for 16s.

97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, bumpers, bunch o' skids, 31" Duratracs on 15x8s
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post #29737 of 44128 Old 01-22-2014, 06:50 AM
Hytek
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Idk lol...still in research mode now. Too much internet and not enough time messing with the Jeep...dang cold weather. I originally wanted to keep the stock wheels but I'm starting to think that's not going to work out for what I'm going for.

98 5.9 Limited - IRO 3.5", IRO short arms track bars Bilsteins, Addco, JK wheels, 255-75/17 BFG, Magnaflow, Flowmaster
04 Limited 4.7H.O QD, UC+BB, Bilsteins, 245/75-16 Duratracs Addco sway bar
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post #29738 of 44128 Old 01-22-2014, 07:06 AM
comptiger5000
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Quote:
Originally Posted by Hytek View Post
Sadly nothing. Anxiously awaiting my IRO care package from Kolak. The Niner's currently sitting @ 3.5“, after the short arms and spacers I'm hoping to net 4-4.5" and a more stable ride. Curious to know if I can stuff some 305/70's under there after. If so my Duratracs may be for sale soon.
Quote:
Originally Posted by ejschultz View Post
Actually, a 305/70/16 is 32.8x12 (it'll vary a little by manufacturer but that's what it works out to mathematically). I don't know if that would work well on a 16x7 rim.
Yeah, a 305/70 is too wide for a 7" wheel. 285/75 (32.8 x 11.25) will work better, but it would still be pushing it a little bit wheel-wise.

If you want to keep the stock wheels, try a 255/85R16. It's a 33x10, so a hair taller and a bit narrower. They'll fit on stock wheels fine and you'll have a lot less fender clearance issues with the narrower tires.

If you want to run the 285/75s, try to find a set of used TJ Moabs (16x8) or buy one of the replica ones available (Mamba MR1Xs are sold through Tirerack). I've got a set of the Mambas for my summer tires, they look pretty good on a niner:
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post #29739 of 44128 Old 01-22-2014, 07:11 AM
ejschultz
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One thing to keep in mind with any 85 sidewall ratio, you're probably looking at a load range E tire. Our vehicles were originally equipped with load range B tires. I'd like to say lost people run load range C tires when they start upgrading. I don't have any evidence to back up the assumption about people generally running load range C tires on their ZJs, but that seems to be the most common load rating for our most common tire sizes.

97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, bumpers, bunch o' skids, 31" Duratracs on 15x8s
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post #29740 of 44128 Old 01-22-2014, 07:52 AM
PolkaPower
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Originally Posted by Hytek View Post
I could try 285/75 instead, it's about the same height just skinnier. I'd like to get as wide as possible without worrying about breaking a bead. Trying to stay with the stock niner wheels if I can. If not then I'll wait a little longer until I can get some steelies in 16x8.
16x8 would be ideal but you have more of a chance breaking a bead with a rim that's too wide that the other way around. a 16x7 rim is a poor mans bead lock. I ran 33x12.50 on stock 7" rims for several years without popping a bead.

Load E tires will ride very stiff but if you need the sidewall protection then that's something you live with. I have had load E on mine for 3 years but since I'm not out west on rocks anymore I would prefer a C range tire.
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post #29741 of 44128 Old 01-22-2014, 07:57 AM
Platinum5nine
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Looked at it tucked away in storage clean and dry for the winter just the way i like it.

Platinum 5.9 2.25" engine pipes 3" Magnaflow cat, 3" Hooker Aerochamber, 3" tail pipe, Ported kegger, 52MM Throttle Body, 24lb injectors, K&N drop in filter, Cast JEEP valve covers, MSD coil and wires, All new 6 piece clear light kit, 255/65/16 General Grabber HTS, 242 conversion, XJ u-joint front axle shafts
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post #29742 of 44128 Old 01-22-2014, 08:00 AM
Hytek
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Quote:
Originally Posted by comptiger5000 View Post

Yeah, a 305/70 is too wide for a 7" wheel. 285/75 (32.8 x 11.25) will work better, but it would still be pushing it a little bit wheel-wise.

If you want to keep the stock wheels, try a 255/85R16. It's a 33x10, so a hair taller and a bit narrower. They'll fit on stock wheels fine and you'll have a lot less fender clearance issues with the narrower tires.

If you want to run the 285/75s, try to find a set of used TJ Moabs (16x8) or buy one of the replica ones available (Mamba MR1Xs are sold through Tirerack). I've got a set of the Mambas for my summer tires, they look pretty good on a niner:
I've been keeping my eye out for some TJ Moabs but nothing ever comes up local.

Quote:
Originally Posted by ejschultz View Post
One thing to keep in mind with any 85 sidewall ratio, you're probably looking at a load range E tire. Our vehicles were originally equipped with load range B tires. I'd like to say lost people run load range C tires when they start upgrading. I don't have any evidence to back up the assumption about people generally running load range C tires on their ZJs, but that seems to be the most common load rating for our most common tire sizes.
Good point. I've been trying to keep within a C/D range at most. It had Es on it when I bought it and they were way to stiff.

98 5.9 Limited - IRO 3.5", IRO short arms track bars Bilsteins, Addco, JK wheels, 255-75/17 BFG, Magnaflow, Flowmaster
04 Limited 4.7H.O QD, UC+BB, Bilsteins, 245/75-16 Duratracs Addco sway bar
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post #29743 of 44128 Old 01-22-2014, 08:08 AM
Hytek
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Quote:
Originally Posted by PolkaPower View Post

16x8 would be ideal but you have more of a chance breaking a bead with a rim that's too wide that the other way around. a 16x6 rim is a poor mans bead lock. I ran 33x12.50 on stock 7" rims for several years without popping a bead.

Load E tires will ride very stiff but if you need the sidewall protection then that's something you live with. I have had load E on mine for 3 years but since I'm not out west on rocks anymore I would prefer a C range tire.
Great feedback thanks!

98 5.9 Limited - IRO 3.5", IRO short arms track bars Bilsteins, Addco, JK wheels, 255-75/17 BFG, Magnaflow, Flowmaster
04 Limited 4.7H.O QD, UC+BB, Bilsteins, 245/75-16 Duratracs Addco sway bar
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post #29744 of 44128 Old 01-22-2014, 08:11 AM
SchizophrenicMC
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Not only will 305 or 285 tires be too wide for your stock wheels, but they'll present clearance issues, especially with the control arms and swaybar. Even with 255/75/17s (32x10.5 roughly speaking) my 2" lifted Laredo would rub on the lower control arms and the sway bar. The other issue of course being those tires are all Load Range E tires, which are the sort of thing you want on your 3/4 ton pickup and not so much on a ZJ. ZJs are too light for that kind of tire. You really want a Load Range C or Load Index 109-111 tire, which can properly absorb the bumps it has to, to maintain the suspension's effectiveness.

At 4.5" you should have no fender clearance issues on 33" tires, but I do suggest considering other solutions for mounting such tires. A set of JK Moabs on the appropriate wheel adapters would allow for a cheap, strong set of wheels with a little bit more spacing, and which are 7.5" to mount slightly wider tires if you want. They are 17" but given the size of the JK community, a lot of 17" tires with higher diameters are cheaper than their 16" counterparts. It's worth considering. (The stock JK tires are 32x10.5 roughly)

1997 Grand Cherokee Orvis Edition
1998 Grand Cherokee 5.9 Limited

FUEL ECONOMY IS FOR LOSERS
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post #29745 of 44128 Old 01-22-2014, 08:21 AM
Platinum5nine
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255/65/16 clears with no lift at all on a stock 16x7 wheel. I personally wouldnt go with a 12.5" wide tire on a 7" wheel, you have to worry about the tire crowning due to the rim being to harrow. A 12.5" wide tire is perfect on a 8" wheel, looks great on a 10" wheel due to the deeper lip of the rim but will stick out past the fender more and puts a lot more load on hub bearings. In my experience a 31x10.5 is ideal on a 2" BB lift.

Platinum 5.9 2.25" engine pipes 3" Magnaflow cat, 3" Hooker Aerochamber, 3" tail pipe, Ported kegger, 52MM Throttle Body, 24lb injectors, K&N drop in filter, Cast JEEP valve covers, MSD coil and wires, All new 6 piece clear light kit, 255/65/16 General Grabber HTS, 242 conversion, XJ u-joint front axle shafts
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