Defender Tdi300 LT230 1.30 ratio

[JamesP]

Inquiring if anyone has fitted the Ashcroft 1.30 ratio gear set to the LT230 transfer box in a Defender Tdi300.
thanks
James

[Alex4398]

Inquiring if anyone has fitted the Ashcroft 1.30 ratio gear set to the LT230 transfer box in a Defender Tdi300.
thanks
James

Not many people out there running the 1.301 ratio from what i've seen. A lot more running the 1.222 from the discos.

I recently fitted a disco one to see how it goes(ive got a td5 though) and its so much better on the freeway, definitely have to change your driving style now and let the turbo spool and the engine rev rather than the quick shifts with the 1.4 case. Only issue is you notice it a little bit on big hills taking off in first gear it can be a bit high. Im running standard 235 tyre size and id be nervous about going to 33s or bigger now, if i do move to 33s ill probably look at getting my case rebuilt with a 1.3 ratio but its a lot of coin.

[shack]

Not many people out there running the 1.301 ratio from what i've seen. A lot more running the 1.222 from the discos.

I recently fitted a disco one to see how it goes(ive got a td5 though) and its so much better on the freeway, definitely have to change your driving style now and let the turbo spool and the engine rev rather than the quick shifts with the 1.4 case. Only issue is you notice it a little bit on big hills taking off in first gear it can be a bit high. Im running standard 235 tyre size and id be nervous about going to 33s or bigger now, if i do move to 33s ill probably look at getting my case rebuilt with a 1.3 ratio but its a lot of coin.Hi Alex,

Are you running a remapped ecu on your defender or stock? currently looking into the disco setup for someone and I feel that a stock defender would struggle a bit.

Cheers
James

[Alex4398]

Hi Alex,

Are you running a remapped ecu on your defender or stock? currently looking into the disco setup for someone and I feel that a stock defender would struggle a bit.

Cheers
James

TD5 with a 10P engine and an EGR block but no tune. It's really only the big hills you do a little clutch slip to get it going, only two or three near me in sydney that i have to do it on. It actually holds better up hills on the freeway in fourth now than it did before.

Got my fair share of weight with a bullbar, winch, rear bar/wheel carrier, dual battery, fridge, water tank, drawers, roof top tent etc.

I think if you tow anything braked you'd be in a lot of trouble, i dont personally fancy taking off in low and switching to high range on the fly.

[JamesP]

Thanks Alex. Mine being a Tdi300 so not as powerful as a TD5 so I'll ponder for a bit longer.

regards
James P

[Bazzle218]

James, my 98 130, 5 speed , 300 tdi is running a discovery transfer case and is slow off the mark but drives ok on the highway. I have towed a camper trailer up to the cape sitting at 90/ 100 kph mainly in 4th. Starting on hills is a nightmare. In most case's it engage low range and then a racing change back to high range once on the move. Some would say its not an issue, but this is my opinion. In the near future i will be going back to the defender transfer case, and i have sourced a Roamer drive , that i will fit. In my opinion this should be the best of both worlds. Baz

[JamesP]

Thanks Baz. I emailed Ashcroft who replied that they supply a lot of 1.3 ratios for Tdi Defenders so I'm thinking I'll go with the 1.30 ratio.

[Bazzle218]

Thanks Baz. I emailed Ashcroft who replied that they supply a lot of 1.3 ratios for Tdi Defenders so I'm thinking I'll go with the 1.30 ratio.


Please keep us in the loop , would be interested in the outcome. Baz

[JamesP]

Will do Baz. Anticipate will get the job done later this year. Also plan to fit an Ashcroft LT230 Torque Biasing Diff at the same time.

[C H T]

Will do Baz. Anticipate will get the job done later this year. Also plan to fit an Ashcroft LT230 Torque Biasing Diff at the same time.

James

Consider fitting a V8 ration fifth gear - on of my sons fitted one to a customer car - it has worked very well. FWIW I fitted a 1.2 TC to my defender when it had a 300Tdi in it - it went well overall, but became a 'hill detector'. I now have an Isuzu 4 BD1T in the vehicle which transformed the vehicle.

C H T

[Bazzle218]

James

Consider fitting a V8 ration fifth gear - on of my sons fitted one to a customer car - it has worked very well. FWIW I fitted a 1.2 TC to my defender when it had a 300Tdi in it - it went well overall, but became a 'hill detector'. I now have an Isuzu 4 BD1T in the vehicle which transformed the vehicle.

C H T

Im now going the 4bd1 and turbo when i can afford it so yours runs fine with the 1.2 ?? going the r380 conversion just awaiting delivery of bell housing fm NSW.

[MLD]

While not a directly on point of the OP. I have a Puma. Fitted 4.11's to suit the 35's. result is 8% shorter than factory 1.221 TC, 3.54 and 235's. It sat a little over 2200 rpm at 100 khp and felt over geared. i fitted 1.1 to the TC which dropped the rpm to 2000 at 100 kph (same as factory combo). The result is a shift into 4th on steep hills and no chance of holding 6th on any hill. Even on flat country roads i find i have to put the boot into it more than before to maintain speed. What i save in fuel by lower rpm, i spend because i need a heavier foot. While the numbers suggested i would be fine, the real world result was a truck that is gutless. Sometimes the number lie.