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Author Topic: ar 35 ratios for td  (Read 2157 times)

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osealy

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ar 35 ratios for td
« on: 21 November 2007, 20:50:15 »
If I put an ar 35 on my td, will I be better off with an elite or Mv6 box.
My current box is fine at 133k but I tow a boat 1500kg & up a slip.
If I have to use the existing torque convertor is the lock up clutch going to fry. is the pump in the tc?
I was in a rental 525d and it was a lot better, I was thinking of chipping the wagon.
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JiMbOb789

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Re: ar 35 ratios for td
« Reply #1 on: 21 November 2007, 20:54:00 »
Go ahead and chip it as soon as you get the money. ;)
Jamie
 :) ;) 8-) :y
« Last Edit: 21 November 2007, 20:54:21 by jimbob789 »
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TheBoy

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Re: ar 35 ratios for td
« Reply #2 on: 21 November 2007, 21:02:44 »
I run a chipped tractor, with an AR35.

Cruising 45-55mph is not ideal, and I tend to lock it in 3rd on 1st 8m of my daily journey (50mph limit)
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osealy

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Re: ar 35 ratios for td
« Reply #3 on: 21 November 2007, 22:13:05 »
how long to change out box & swop bell housing with lift?
Why bad crising 45-55.
Current ar 25 will only lock in 4th at 50ish.
Is your mileometer out? I get a mileage allowance.?????
Does bell housing bolt onto box or is it part of the casing?
Thanks.
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TheBoy

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Re: ar 35 ratios for td
« Reply #4 on: 21 November 2007, 22:18:45 »
Quote
how long to change out box & swop bell housing with lift?
Why bad crising 45-55.
Current ar 25 will only lock in 4th at 50ish.
Is your mileometer out? I get a mileage allowance.?????
Does bell housing bolt onto box or is it part of the casing?
Thanks.
From what I can gather, the AR35 is slightly higher geared. That means that the revs are around 1500rpm when it locks up in 4th, whish is below the boost.

The turbo starts to wind up just below 2k rpm, which is around 55mph.  So that 45 to 55, if cruising, drops it into 4th, and the engine doesn't have the power that low down.
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osealy

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Re: ar 35 ratios for td
« Reply #5 on: 21 November 2007, 22:45:18 »
Is there a difference between elite & mv6?  I was told that elite was higher geared!
What would you consider a fair price for ar 35.
Seeing as ar25 is fine at mo, would you leave it till it fails? But i suppose that'l knack the tc!
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TheBoy

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Re: ar 35 ratios for td
« Reply #6 on: 22 November 2007, 19:54:38 »
Quote
Is there a difference between elite & mv6?  I was told that elite was higher geared!
What would you consider a fair price for ar 35.
Seeing as ar25 is fine at mo, would you leave it till it fails? But i suppose that'l knack the tc!
The TC will be fine - just as well, as you'll need to use your existing TC and bellhousing on the AR35 if you swap it. If you chip it, you'll knacker the box though.

The gearing is identical between (retail) MV6 and 3.0 Elites
« Last Edit: 22 November 2007, 19:54:58 by TheBoy »
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Kevin Wood

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Re: ar 35 ratios for td
« Reply #7 on: 22 November 2007, 21:07:15 »
Do you know what diff ratio is in the tractor, Jaime?

Just wondering if you could swap it for a shorter geared one?

Kevin
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TheBoy

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Re: ar 35 ratios for td
« Reply #8 on: 23 November 2007, 09:12:36 »
Quote
Do you know what diff ratio is in the tractor, Jaime?

Just wondering if you could swap it for a shorter geared one?

Kevin
was thinking similar myself...
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osealy

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Re: ar 35 ratios for td
« Reply #9 on: 23 November 2007, 17:57:00 »
Just managed 480 miles mid says 29 left, since yesterday.
Tc locks at 47 mph gentle throttle, unlocks at 45 1400rpm , sounds similar to ar 35, Where is there a list of ratios?
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TheBoy

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Re: ar 35 ratios for td
« Reply #10 on: 23 November 2007, 21:55:24 »
Quote
Just managed 480 miles mid says 29 left, since yesterday.
Tc locks at 47 mph gentle throttle, unlocks at 45 1400rpm , sounds similar to ar 35, Where is there a list of ratios?
What is it reving at at 47mpg though?
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osealy

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Re: ar 35 ratios for td
« Reply #11 on: 24 November 2007, 01:06:59 »
can't say till mon. don't think i'll get over 40 round here.
It does slightly over 60 at 2k so i guess somewhere between 1400-1600.
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osealy

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Re: ar 35 ratios for td
« Reply #12 on: 24 November 2007, 20:59:48 »
Locks up at c 48 near 2krpm drops down to just over 1,600rpm.  seems fine btw 493mls with 67.6l -33mpg with roof rack  fully laden ,scraped hitch twice on humps with self leveling?
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IrmscherKris

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Re: ar 35 ratios for td
« Reply #13 on: 24 November 2007, 21:53:02 »
Do it! Get a dragon performance box (adjustable) and an ar35 from the 3ltr (any).
If I crank my box up to the gigawatts and leather it I get low 20's  :-[ Day to day I get 33-36 with it turned right down - but still very quick!
The oil pump is actually in the box itself AFAIK.

You basically put the car on axle stands,
unbolt the propshaft,
unplug all the sensors
undo the T/C from the peepe hole
undo the box, lower the ar25, bolt the ar25 bellhousing on the ar35 (easy job).
One thing that might be worth doing while the new box is off the car is replacing the thrust washer (theres a how2 on here) and replacing the neck seal.
You use your original T/C and loom.
Then refitting is reverse to removal.
It's a job that first time will take you 4-6hrs all in - absolute max.

Have 2 x trolley jacks for lowering the box from the car and be prepared to swear alot and grit your teeth...

Be worth it though!  :y
« Last Edit: 24 November 2007, 22:03:00 by irmscherkris »
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IrmscherKris

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Re: ar 35 ratios for td
« Reply #14 on: 24 November 2007, 22:06:35 »
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