6 speed TDi

[ajh]

No kidding, it has me thinking that I should just put the blown 300 into the challenge truck and buy a used TD6 for the Tomcat.

[Ex Member]

The MT82 6th is actually 0.742:1 (not 0.79).

[Ex Member]

And the PUMAs have the 1.2 transfer case as well, so it is a much higher top gear (20%) than the previous models.

[FridgeFreezer]

Similar gearing to LT77/R380 5th + 1.4 LT230 + Overdrive then.

[Ex Member]

For top gear, yes.  1st on the 6 speed is still much lower.

[Happyoldgit]

Don't forget the common issue with the 6 speed as fitted to the TDCI's is their unfortunate habit of sometimes leaving you with no drive due to sudden failure of the intermediate shaft between the main and transfer boxes. This is a reasonably common issue that is due to lack of lubrication of the fine splines during initial transmission assembly at the factory. That said having owned Puma's I never personally suffered failure but that really was down to luck and maybe knowing the issue it was me being gentle with both feet.

First gear is low and good for starting off when towing but for on the flat road starts on a flat road without a trailer I'd generally use second.

[ajh]

In my case I'm looking at TD6/TDV6 applications, so the ratios make a lot of sense and having something that can be fitted with a short shifter is attractive in a racer.

[Ex Member]

3 hours ago, Happyoldgit said:

Don't forget the common issue with the 6 speed as fitted to the TDCI's is their unfortunate habit of sometimes leaving you with no drive due to sudden failure of the intermediate shaft between the main and transfer boxes. This is a reasonably common issue that is due to lack of lubrication of the fine splines during initial transmission assembly at the factory. That said having owned Puma's I never personally suffered failure but that really was down to luck and maybe knowing the issue it was me being gentle with both feet.

First gear is low and good for starting off when towing but for on the flat road starts on a flat road without a trailer I'd generally use second.

Ashcroft does a fix.  http://www.ashcroft-transmissions.co.uk/mt82-output-shaft-kit.html

[Happyoldgit]

34 minutes ago, Red90 said:

Ashcroft does a fix.  http://www.ashcroft-transmissions.co.uk/mt82-output-shaft-kit.html

 

Yep, and others have fitted grease nipples to the shaft joint and cut access holes in the shaft housing too. Thing is it's a known issue since the introduction of the 6 speed but one that LR have never recognised but will usually fix if the vehicle is still under warranty. That's little comfort of you suddenly loose drive though. It's luck of the draw as some shafts go on while others give up the ghost, obviously the transfer box needs to come off to get to it.

 

[FridgeFreezer]

15 hours ago, ajh said:

In my case I'm looking at TD6/TDV6 applications, so the ratios make a lot of sense and having something that can be fitted with a short shifter is attractive in a racer.

Isn't that a completely different gearbox to the TDCi then?

[dave88sw]

On 9/19/2017 at 7:29 PM, ajh said:

In my case I'm looking at TD6/TDV6 applications, so the ratios make a lot of sense and having something that can be fitted with a short shifter is attractive in a racer.

As fridgefreezer says, the tdci box probably isn't the best suited.  if you're going TDV6, why not look at the 6 speed Disco 3/4 manual box that will bolt straight up to the engine.

[tacr2man]

How about an allison auto like I have in my RV 

First

Second

Third

Fourth

Fifth

Sixth

Reverse

3.49 : 1

1.86 : 1

1.41 : 1

1.00 : 1

0.75 : 1

0.65 : 1

-5.03 :