Topic: Detroit Trutrac (Read 7566 times)

Rikk · « **on:** July 11, 2006, 02:21:32 PM »

Hmm where to start...

In a few weeks the ZG will be going in to be regeared to 4.10 and have a Trutrac put in the back to replace the factory LSD.

I also want a locker in the front as well but all the standard ones are pretty expensive, ie £1000 by the time you look at an arb+air+fitting etc, same for an OX. I'd like to get it done at the same as all the regearing but just don't have another £1k handy.

I initially wanted another Trutrac in the front but have been reading up and talking to people about how they dramatically change the handling on full time 4wd vehicles for the worse.

Ok, now to my question, baring in mind the ZG isn't effectly full time 4wd as the VC will only start working if the back starts spinning dramatically is it still going to affect the performance? and as I'm also looking at changing the TC to a 242 and when I have that in will be driving on road in 2wd unless slowly on snow/ice etc that would also take the Trutrac out of the equation.

So...is my thinking in the ballpark or am I talking shit as usual?

............Rikk

trent · « **Reply #1 on:** July 11, 2006, 04:02:24 PM »

I have read what you've written but even so, i'd go for the truetrac in the front and have it thrown in during the gear install, it'll be cheaper in the long run.

isle of man · « **Reply #2 on:** July 11, 2006, 04:16:12 PM »

yes my opinion is the trutrac option front and rear....."nice and easy" i have used this set up on a previous wrangler and for the tight and twisty bit's it is hard to find a better all-in-all set-up.

peter henry

Anonymous · « **Reply #3 on:** July 11, 2006, 05:00:27 PM »

I went for the Detroit in the rear, Ox in the front.... As per my other post, I;m awaiting confirmation from 4wd if I have the wrong R&P for the detroit as I currently have the factory LSD in the rear, and an Ox in the front. Only got her back Saturday, so not had a chance to test her out at all with that setup.

My thinking is that with the front diff unlocked, if you fail a hill climb, you have one front wheel to keep you straight, yes you may fail more hill climbs, but I prefer that than sliding down a hill sideways

But that's just my view.... No qualms with an auto locker in the rear though.

EE

JamesH · « **Reply #4 on:** July 11, 2006, 05:45:21 PM »

A Truetrac is a gear driven limited slip diff, not a locker. I know several people who have them in the front of XJs and love their performance off and on-road.

Off-road they give grip to both wheels (just not totally locked like an ARB or detroit) and work very well, allowing you to steer easily (unlike an engaged ARB). On-road in full-time 4x4 (242 t-case) they grip and pull the front end where you want it to go, really helping on cornering and as a LSD they do this while still allowing you to turn normally (unlike Detroit, lock-right etc).

The only bad words I have heard about a Truetrac is that they don't always transfer enough grip when one wheel is off the ground and you are running big tyres (33-35s +).

The only reason I may not put one in the front of my XJ very soon is if I can stretch to an ARB setup for full-locking capability off road. Even then It'll be disappointing to lose the grip the Truetrac gives on the road in Full-time 4x4.

If you want to find out from those people I mention running the setup, try some of the other forums as unfortunately they aren't Birty converts yet :roll:

Psychoman · « **Reply #5 on:** July 11, 2006, 05:58:23 PM »

Pete's a Birty (albeit doesn't post very often) and has this set-up. Pete - comments?

Rikk · « **Reply #6 on:** July 11, 2006, 07:11:55 PM »

Thanks for all the comments, so far looking good

And the nice strong pound means I should be able to get it all done for under 2k

..........Rikk

Rikk · « **Reply #7 on:** July 11, 2006, 08:40:01 PM »

The dirty deed is done, Trutracs front and back and 4.10 gears being ordered.

So if you see me hanging out at any of your local stations offering my services for money give generously as it's going to a good cause

Cheers

.........Rikk

MK1 · « **Reply #8 on:** July 11, 2006, 09:08:30 PM »

It certainly don't come cheap, ask half the people on here!

If yours is like the CJ then double your intended 'cash pot' just in case!

isle of man · « **Reply #9 on:** July 11, 2006, 09:52:13 PM »

and then sum if it's a tj......

peter henry

wrangler · « **Reply #10 on:** July 11, 2006, 10:17:05 PM »

Hi Rikk, I run Trutracs front and back with 4.56 R&P, 33x12.5 and to be quite honest I think it’s a great set up. Good all round, off and on road. :lol:

PeteS · « **Reply #11 on:** July 12, 2006, 10:26:59 AM »

As Dave says I'm running TruTracs front and rear with a 242 transfercase on my diesel XJ. 4.10 gearing on 31" tyres. Handling on road is superb, off road it's great.
Find that when manouvering in Full time 4WD on tarmac the front trutrac does grab a little gives a similar feeling to being in partime 4WD but that's just the trutrac doings it job. Obviously it doesn't do anything in 2WD!

I just love being able to power round roundabouts now in the wet with out resembling a powerboat!!

I was well impressed with its performance at Seven Sisters as I've only just put the trutrac in the rear.

Pete

Rikk · « **Reply #12 on:** July 12, 2006, 12:59:44 PM »

Thanks for all the feedback guys it's really apreciated, feeling nice and confident about the choice now

..............Rikk

Psychoman · « **Reply #13 on:** July 12, 2006, 07:04:39 PM »

Quote from: "PeteS"

I was well impressed with its performance at Seven Sisters as I've only just put the trutrac in the rear.

Pete

Okay - won't mention the hill climb by the posing rocks then Pete! Oops, just did! :wink:

skip · « **Reply #14 on:** July 12, 2006, 07:11:36 PM »

Hi, i'm thinking that as i've already got a tracloc in the back on my jeep there'd be no point changing for a truetrac then?

I know it's a hijack :oops:

but it's on the right topic

Anonymous · « **Reply #15 on:** July 12, 2006, 07:16:42 PM »

the tracloc wont last very long......once they start to wear, its time to chuck em!!

the truetrac is a more aggressive lsd so SHOULD last longer.......at least thats what I am lead to believe...... :wink:

isle of man · « **Reply #16 on:** July 12, 2006, 07:22:57 PM »

and the trutrac does not need the friction modifier so cheaper oil changes....

peter henry

skip · « **Reply #17 on:** July 12, 2006, 07:25:47 PM »

Nice one ta. if they aren't to dear i'll get both ends done at the same time. if the old girl gives me enough finacial breathing space to afford too. :lol:

PeteS · « **Reply #18 on:** July 12, 2006, 08:36:15 PM »

Quote from: "Psychoman"

Quote from: "PeteS"

I was well impressed with its performance at Seven Sisters as I've only just put the trutrac in the rear.

Pete

Okay - won't mention the hill climb by the posing rocks then Pete! Oops, just did! :wink:

Everyone gets lucky once Dave and Oh! who was it that had to be tugged out by a Suzi at the waterfall??

Bubba · « **Reply #19 on:** July 12, 2006, 10:02:05 PM »

hands up those that have worn out a trac lok then it realy fecks me off folks commenting on stuff they aint tried themselves
i would have gone front true trac and a detroit locker out back road maners at the front and full on traction at the back
o i ran trak loc for ten years no probs it did what i wanted inc competative use

Anonymous · « **Reply #20 on:** July 12, 2006, 10:45:22 PM »

is the "tracloc" in a xj the same as in the older jeeps then???

i know they have the same name but i thought they were different........

all i really know is that the one in my rear diff is giving me the hump at the mo & as soon as i can, its bloody going!!!!

greggmo · « **Reply #21 on:** July 12, 2006, 10:51:25 PM »

my d35 clonked and banged for about three years with no sign of givin out at any point. run em till they fall out then fix em.

Bubba · « **Reply #22 on:** July 12, 2006, 10:51:45 PM »

no as per norm i missread i thaught he was on about after market lockers not the crap thing in the back of xjs sorry guys i is havin a bad time at the mo
i was actualy referring to a loc right

skip · « **Reply #23 on:** July 13, 2006, 06:31:10 PM »

Quote from: "The Kitchen Devil"

is the "tracloc" in a xj the same as in the older jeeps then???

i know they have the same name but i thought they were different........

all i really know is that the one in my rear diff is giving me the hump at the mo & as soon as i can, its bloody going!!!!

I got some 80w90 gear oil with the proper additive already mixed in and it hasn't made a peep since, worth a go.

Rikk · « **Reply #24 on:** August 05, 2006, 01:30:04 PM »

Picked up the ZG on Friday from Steve at FTE 4x4 after having 4.10's, trutracs front and back and new diff bearings all round.
WOW, it's like a new vehicle, so smooth and responsive now and the screaming kids in the back..oh sorry that was the diff making a noise...has all gone.
Got to be gentle for a while but even so you can feel such a difference, also because of the trutrac in the front, the steering wants to centre more which I have to say I like as power steering is normally quite overpowered and takes away a lot of the feel.

All in all very impressed and another great job by Steve

Next in line is the TC swap.

...........Rikk

Author Topic: Detroit Trutrac (Read 7566 times)

Rikk

Anonymous

Psychoman

Rikk

Rikk

MK1

PeteS

Rikk

Psychoman

skip

Anonymous

skip

PeteS

Anonymous

skip

Rikk