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xXBigBroXx Profile
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Date Registered: 11-2016
Location: Brisvegas, Northside
TOTAL POSTS: 12
Reply | QUOTE
posticon T31 diesel auto limitations


It's probably been done to death and for the life of me, I cannot find where I read on this forum, the reasons for the 6spd auto having a substantially lower power output than the manual diesel variant!?

Is it to do with a weak auto trans or lack of cooling capability?



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Craig "BigBro" X4853

2010 TS 6spd Oil burner - Stock everything.. has a cargo barrier! Woohoo!

15/Mar/2017, 10:33 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5406
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Re: T31 diesel auto limitations


It is to do with the transmission cooling.
Instead of running the oil out to the radiator where an external cooler can be fitted, they pipe the radiator water to the transmission. This does not seem to be as efficient so less cooling.

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Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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17/Mar/2017, 11:30 pm Link to this post Send Email PM   Send Private Message Blog
 
xXBigBroXx Profile
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Date Registered: 11-2016
Location: Brisvegas, Northside
TOTAL POSTS: 12
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Re:


Seems to be a well thought over piece of engineering don't you think!?
Haha
So I guess there is no possibility of externally cooling these bad boys ay... good work you engineers you!

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Craig "BigBro" X4853

2010 TS 6spd Oil burner - Stock everything.. has a cargo barrier! Woohoo!

2/Apr/2017, 10:12 pm Link to this post Send Email PM   Send Private Message Blog
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5406
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Re: T31 diesel auto limitations


Read through the last page of this thread Bro.
Seems there might be a way to connect an external cooler if you can find out more information about the mysterious plug bolts referred to by Ahto

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Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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3/Apr/2017, 8:57 am Link to this post Send Email PM   Send Private Message Blog
 
ahto42 Profile
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Date Registered: 06-2012
Location: Estonia
TOTAL POSTS: 44
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Re:


The aux cooler is in my plans, but first things first.

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Member id X-2451
Name: Ahto
Location: Estona, Tartu

Model: T31 II 2012 Diesel Auto, LE
9/Apr/2017, 10:48 pm Link to this post Send Email PM   Send Private Message Blog
 
Xtraildude Profile
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Date Registered: 09-2012
TOTAL POSTS: 32
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Re:


Was told auto not up to the torque output when loaded up

My missus can't drive manual. Took me months to find one

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Stock 08 6spd Xtrail
X-2669 (c)
26/Apr/2017, 5:24 pm Link to this post Send Email PM   Send Private Message Blog
 
ahto42 Profile
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Date Registered: 06-2012
Location: Estonia
TOTAL POSTS: 44
Reply | QUOTE
Re:


Check the small vacuum lines. From turbo to the solenoid and from the vacuum tump. Next to the battery is a plastic T-connection. It may get fragile over the years.

What is your MAP/boost sensor reading? I have 2,55kpa on full throttle.

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Member id X-2451
Name: Ahto
Location: Estona, Tartu

Model: T31 II 2012 Diesel Auto, LE
30/May/2017, 5:18 pm Link to this post Send Email PM   Send Private Message Blog
 
Wiz Au Profile
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Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
Reply | QUOTE
Re: T31 diesel auto limitations


So does the Petrol get the same 6sp auto gearbox (I know there is a CVT, but is there a 6spd?) Because does that mean the Diesel is more "powerful" than the Petrol?? Makes me think about the whole "N/m torque vs HP/Kw" and how the temperature of the AT is affected. If the 6spd auto transmission is the same, then it must not like low rev / high torque because the Petrol would have much higher HP/Kw at revs, which is what I think would heat up an auto?

Is it a Jatco? Any one know the "JFxxx" number, I can do some research.

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2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
8/Jun/2017, 1:57 pm Link to this post Send Email PM   Send Private Message Blog
 


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