Maverik Posted April 6, 2022 Share Posted April 6, 2022 So next on my "fix" list is the Transfer box on my 90. - its suffered over the years with condensation damage to the gears, and now the case is leaking quite badly from the usual places. So was going to get a nice sorted one from Ashcroft. - now I've got the engine sorted, I've always felt my truck was over geared e.g. in a 30mph zone 3rd gear feels to high and 4th isn’t quite enough unless its dead flat. I had a play with an overdrive a few years ago and it didn’t get on well in the end, decent when it worked, but after the experience I really can't be bothered with the additional complexity of any overdrive. So after Ashcroft released the new 1.301 gearset I thought that could be a really tidy compromise - I don’t do a lot of towing (on the odd occasion). I've been playing with the Ratio calculator and on paper it looks half way house between a 1.2 and a 1.4 (quite obviously) - but I'm intrested to know how it feels in real life. Did a few searches and didn’t find any real experience feedback from owners, is anyone running a 1.301 box they can comment on? Cheers Mav Quote Link to comment Share on other sites More sharing options...
Chicken Drumstick Posted April 6, 2022 Share Posted April 6, 2022 What engine do you have? And what gearbox. Many of the diesels will happily pull 5th at 30mph. Quote Link to comment Share on other sites More sharing options...
Jocklandjohn Posted April 6, 2022 Share Posted April 6, 2022 (edited) Thread here - did you find this one? https://www.defendersource.com/threads/new-ashcroft-lt230-1-301-gear-set.154238/ Edited April 6, 2022 by Jocklandjohn Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 6, 2022 Author Share Posted April 6, 2022 45 minutes ago, Chicken Drumstick said: What engine do you have? And what gearbox. Many of the diesels will happily pull 5th at 30mph. Defender 200tdi, R380 (300tdi- 22D) Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 6, 2022 Author Share Posted April 6, 2022 37 minutes ago, Jocklandjohn said: Thread here - did you find this one? https://www.defendersource.com/threads/new-ashcroft-lt230-1-301-gear-set.154238/ No I hadn't seen it, thanks for the post. Actually the op's argument is similar to mine according to the ashcroft calculator I'm a little high on revs when in 5th etc. Annoyingly it doesn't actually close out what the guy went with. I've got a rev counter, I'll calibrate it up and see if I can get some real time numbers to compare with the ashcroft tables. Whats always puzzled me is that you never hear of Discovery drivers complaining of there gearing using the 1.2 transfer box - I did a check on the calculator and the D1 gearboxes certainly for the 200tdi where the same as Defender. Quote Link to comment Share on other sites More sharing options...
western Posted April 6, 2022 Share Posted April 6, 2022 Different tyres sizes on Discovery, so that would have something to do with the overall gearing. 1 Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 6, 2022 Author Share Posted April 6, 2022 4 minutes ago, western said: Different tyres sizes on Discovery, so that would have something to do with the overall gearing. True as standard they're usually a smaller diameter. I'm running standard 235,85r16 which comes out as 31.7" diameter. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted April 7, 2022 Share Posted April 7, 2022 My Disco 200 Tid runs 235/85x16 and 1.22 box - it's fine with towing and often tows at 3.5tonnes. It's gearing is well spread. All up vehicle weight - with all the junk I carry, is 2.15 tonnes My 100" had a 1.22 box, 200 tdi and an ealry military LT77. It was carp at towing. Gear were in the wrong place. Big gap between 3rd and fourth, huge gap between 4th and 5th. All very odd, The Box was from a 2.5 110. If I don't sell the Disco, I'll go down the R380 route, simply as part of the sound reduction 1 Quote Link to comment Share on other sites More sharing options...
miketomcat Posted April 7, 2022 Share Posted April 7, 2022 I've had a disco 200tdi on 31's it was to tall for towing, bearable solo but only just. Same engine and gearbox in the ibex but with 1.44 transfer box on 35's still to tall for towing. Swapped out the tyres for 33's and I'd say it's about perfect, a bit taller than standard defender but not as tall as a 1.22 transfer box. Our 110 is on the same 1.44 transfer box and 33's. So probably about where the Ashcroft gear set puts you. Mike 1 Quote Link to comment Share on other sites More sharing options...
Snagger Posted April 7, 2022 Share Posted April 7, 2022 17 hours ago, western said: Different tyres sizes on Discovery, so that would have something to do with the overall gearing. That is the main reason for the different gearing. They may also have felt that Defenders would tow heavy trailers more often or in worse conditions than typical Discovery’s or RRCs, but many a Discovery pulled heavy horse trailers. I suppose they didn’t typically do so across building sites or mountain ranges, though - more A-roads and paved lanes. Quote Link to comment Share on other sites More sharing options...
muddy Posted April 10, 2022 Share Posted April 10, 2022 Personally I would fit larger tyres and stick with a 1.4 unless you do a lot of motorway miles where a '6th' gear will quieten the job down but even then I've not driven many defenders that will pull higher gearing on motorway inclines well. (and I've driven quite a lot) Short gearing especially in a 90 is very much a part of the driving experience and charm for me. 1 Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted April 10, 2022 Share Posted April 10, 2022 Is there any kind of comparison table between the RPMs at a given speed for the different transfer cases? This is something I'm interested in as I feel like mine is too low geared even with the 1.22 Disco box, 70 is about 3,200rpm which is a bit ridiculous for something considered to be tall geared. I know/expect it'll be different for diesels. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 11, 2022 Share Posted April 11, 2022 https://ashcroft-transmissions.co.uk/ratio-calculator/ Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 11, 2022 Author Share Posted April 11, 2022 This is what I have been using from left to right 1.4, 1.3, 1.2 ratios. (from ashcrofts website) I've since calibrated my rev meter and its near as damit the going as table first left which is good. Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted April 11, 2022 Share Posted April 11, 2022 14 hours ago, Bowie69 said: https://ashcroft-transmissions.co.uk/ratio-calculator/ That'll be a yes then... According to this I'm at least 500rpm over at all speeds, this requires more experimentation. Sorry to derail the topic. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 11, 2022 Share Posted April 11, 2022 Is that via TunerStudio or your dash mounted tach? Quote Link to comment Share on other sites More sharing options...
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