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Author Topic: Diff re-gear?  (Read 14449 times)

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Motul

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Diff re-gear?
« on: April 27, 2005, 02:57:09 PM »
Hi guy`s,

Anyone got an idea of cost involved in re-gearing the diff`s on my 93` XJ??...... and would it be 4.56 Front and rear to run 31" tyres (with no risk of failure)?? :smt017

Cheers

Andy.
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Anonymous

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« Reply #1 on: April 27, 2005, 03:03:23 PM »
Assuming that the cost for an XJ is the same as a TJ, I have just been quoted:

Axle build up £250.00 + VAT
Ring & Pinion £245.97 inc VAT
Labour to remove and refit axle £175.00 + VAT

Axle build up price included putting in my own ARB locker at the same time

Labour did include fitting my own lower control arms and my own replacement shocks - so adjustments need to be made to price as you require less done.

I am regearing to currently run 33" but my last TJ with same gearing was on 35" with no problem - Dont know if XJ is same type of axle?
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greggmo

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« Reply #2 on: April 27, 2005, 05:22:46 PM »
i wouldnt bother mate. chuck em on and see how you get on. i dont think you will need to regear. 8)
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Woody

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« Reply #3 on: April 27, 2005, 07:02:02 PM »
Agree with Greggmo most people only start to regear from 33" upwards.  Try it and see what the power feels like and if your fuel economy has dropped before deciding.
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Tank

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« Reply #4 on: April 27, 2005, 08:53:47 PM »
Motul,my XJ runs on 32`s and as far as im aware,hasnt been regeared.The only real problem i have is when i go up hills,but only because for some reason it wont kick down when you put your foot down and nothing to do with the tyres :)  :)  :)
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Bubba

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« Reply #5 on: April 27, 2005, 09:41:15 PM »
dont re gear just for 31s leave it as it is
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trucks


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I spent most of my money on alcohol, women and old  iron........ the rest of it I just wasted.

Mike Pavelin

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« Reply #6 on: April 28, 2005, 08:41:53 AM »
On motorways It'll be screaming it's tits off on 4.56 and 31's. Wouldn't bother unless you intend going bigger later. If you have an auto with power/comfort switch, leave it on power, helps compensate for the 31's.
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Motul

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« Reply #7 on: April 28, 2005, 11:38:52 AM »
Cheers you lot, so its "just" the money for the tyre`s I need to find, FEW!!

Tank, you sorted that prop ok mate ?

Thanx again guys  :wink:

Andy.
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Anonymous

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« Reply #8 on: April 28, 2005, 12:50:33 PM »
Andy

let me know what tyres you fancy & i will see if i can get a deal off my daddy for you!!

Paul
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Tank

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« Reply #9 on: April 28, 2005, 03:33:27 PM »
Props all sorted,half way through changing springs,got rear shoes to change and i still have a sort of grating noise from front when in 4wd.Thought it was prop but as i changed both,it rules that out.Will check fluids but i think it could be more serious though. :?  :?  :?  :?  :?
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Mike Pavelin

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« Reply #10 on: April 28, 2005, 07:00:39 PM »
Andy, you'll have to change the gear on the speedo drive if you go to 31s or you'll be reading low.
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Motul

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« Reply #11 on: April 28, 2005, 07:23:51 PM »
Paul - does your Dad deal with Greenway Tyres? as i was thinking of a set of 5 Macho`s, in 31.10.50R 15???

Mick - with the grinding noise, it does sound a little lube based, be nice for ya if thats all it is!!

Mike - hear what your saying mate, what`s that intail ? and how much d`ya reakon it`ll be out ?

ANOTHER ONE.......... I`ve rarely seen people going for bigger rubber on standard rims!! will I have to give the Jeep alloys some back spacers to allow for the extra circumference??

Sorry for the newb questions guy`s  #-o

Andy.
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Mike Pavelin

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« Reply #12 on: April 29, 2005, 08:52:52 AM »
The speedo is generally 5% high as standard, 30" tyres tend to correct it to true MPH, 31s will make you read about 10% low. It takes about 10 min to change the gear, and they're £10-15 to buy.

31s are ok on stock 7Jx15 rims, you may get a little rubbing on the front on full lock, but you can adjust the lock stops out to stop this happening.
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Anonymous

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« Reply #13 on: April 29, 2005, 09:08:02 AM »
Dr Mike
Who sells the gear for a TJ?
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Mike Pavelin

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« Reply #14 on: April 29, 2005, 09:28:20 AM »
Jeep dealers or Lighthouse will be able to supply. look here for the correct one........http://www.gotjeep.net/speedo.html
Should apply to TJ and XJ.
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Anonymous

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« Reply #15 on: April 29, 2005, 09:31:16 AM »
Andy, you do know that Greenways are retreads???

I grew up in the tyre trade & I personally wouldnt want retreads for every day use on the road........they might be great off road but notoriously hard to balance for road use!

I have asked them to find out a price for you & also what sort of deals are about for new, branded stuff.........

Will let you know shortly!
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Motul

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« Reply #16 on: April 29, 2005, 11:23:03 AM »
Hi KD, yes mate I did know they are re-treads, but at 50 odd squid each you cant go wrong really, and i`ve been running on Colway all terrain re-treads for 12mths now, and bloody things wont ware out!!  :wink:

Much respeck  :prayer:

Andy.
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Motul

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« Reply #17 on: April 29, 2005, 11:26:02 AM »
Mike - sorry dude, got carried away in that last post at thought of nice big MT`s to say cheers for your wisdom mate  :smt023
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Anonymous

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« Reply #18 on: April 29, 2005, 11:35:21 AM »
Thanks for this Mike
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