JeffR Posted December 2, 2011 Share Posted December 2, 2011 Lying in my garden is transfer box/R380/Bellhousing and overdrive (don't ask......), now I have this weird compunction to convert my 110 V8 to a slush box next year (arthur and his best mate ritis are getting worse in my left leg) and I was wondereing... Now some of the old RR ran an auto box and overdrive, could I fix a GKN overdrive to an auto box and make it work? Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted December 3, 2011 Share Posted December 3, 2011 I would be interested in the over drive if it doesnt fit.. I think it'd work if you use an LT230 transfer box, not 100% sure though Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 3, 2011 Share Posted December 3, 2011 wasnt the LT230 a solid case. i.e gearbox and xfer box in one and non splitable Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted December 3, 2011 Share Posted December 3, 2011 No because the LT230 bolts to the LT77 and R380. LT95 was as you describe, they went into 101's ect. Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 3, 2011 Share Posted December 3, 2011 ahh my bad. Quote Link to comment Share on other sites More sharing options...
reb78 Posted December 3, 2011 Share Posted December 3, 2011 I'm not sure, but wouldnt the lower revs caused by the OD confuse the auto box? Quote Link to comment Share on other sites More sharing options...
steve b Posted December 3, 2011 Share Posted December 3, 2011 I reckon it would have to be engaged all the time as the auto will always want to turn the OP shaft at the back of the box, even in neutral , so not really viable imo. Why not use a 1:1.003 T-box with the auto as used on auto RRC's? cheers Steveb Quote Link to comment Share on other sites More sharing options...
JeffR Posted December 3, 2011 Author Share Posted December 3, 2011 "I'm not sure, but wouldnt the lower revs caused by the OD confuse the auto box?" That was my main concern, guess the only way to find out is to give it a go next summer! Quote Link to comment Share on other sites More sharing options...
tacr2man Posted December 3, 2011 Share Posted December 3, 2011 Cant really see the point of fitting o/d as you would just leave it in high all the time , as the auto box would shift using the load on the output of the auto box . so if you shifted out of o/d the box would just change up to counteract etc. and vice versa . You would be better off just fitting a higher geared transfer box , or taller tyres . The only plus point would be that you could get into TC lock up a bit earlier (road speed wise) than with a fixed transfer ratio. I am taking it that the o/d is an epicyclic electric operated unit , as otherwise unloading torque for long enough to shift might cause problems . HTSH JMHO Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 3, 2011 Share Posted December 3, 2011 nissan navara autos have a 3 speed automatic with an overdrive as standard. not sure how it all works though. Quote Link to comment Share on other sites More sharing options...
JeffR Posted December 4, 2011 Author Share Posted December 4, 2011 Simpler way may be to servo the clutch of course, but I never thought of that... Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted December 4, 2011 Share Posted December 4, 2011 One of the bling bling tuning companies (I think it might have been Td5 Alive) was planning on offering a pricy booster kit for the clutch. May be cheaper to just use one of those remote servo kits you used to get for old Minis etc. Quote Link to comment Share on other sites More sharing options...
reb78 Posted December 4, 2011 Share Posted December 4, 2011 Theres a french company that makes a servo kit for the land rover isnt there? I seem to remember seeing a Youtube advert from them posted on here ages ago. Edit (found the link): As above, UK enquiries to TD5 alive according to the link. Quote Link to comment Share on other sites More sharing options...
JeffR Posted December 4, 2011 Author Share Posted December 4, 2011 "May be cheaper to just use one of those remote servo kits you used to get for old Minis etc" Fitted one of those to the wifes Mini 2 years ago, I wonder if she would miss it? Quote Link to comment Share on other sites More sharing options...
tacr2man Posted December 4, 2011 Share Posted December 4, 2011 Servo the clutch is very simple , did a few on L/Crsrs in OZ untill they started fitting them as option . just use something like this http://www.ebay.co.uk/itm/LOCKHEED-REMOTE-SERVO-3232656C-MG-MINI-TRIUMPH-etc-/220902943988?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item336ed76cf4 Quote Link to comment Share on other sites More sharing options...
simonr Posted December 4, 2011 Share Posted December 4, 2011 I used to have a servo clutch on my 110 based on one of those Lockheed units (sourced from a scrap yard though). It was hard to bleed but once it was working, you could genuinely press the clutch with your little finger! I was commuting to work, spending several hours in stop-start traffic which made my left leg hurt. The original clutch (1986 NA Diesel) was very heavy. With the servo, it was great! Si Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted December 5, 2011 Share Posted December 5, 2011 You can't use an overdrive in any gear, they won't take the torque when you're in 1st/2nd/3rd. Quote Link to comment Share on other sites More sharing options...
reb78 Posted December 6, 2011 Share Posted December 6, 2011 You can't use an overdrive in any gear, they won't take the torque when you're in 1st/2nd/3rd. Roverdrive would be ok, but it sounds like the OP has a GKN. On a normal manual gearbox, the GKN shouldnt be used in 1st or 2nd. I use mine in third upwards. I'm guessing the ratios are different in an auto, so even if the OD works with that combination, it may only be ok to use in top gear perhaps. Quote Link to comment Share on other sites More sharing options...
discomikey Posted December 23, 2011 Share Posted December 23, 2011 i thought sbout remote servoing the clutch on brian, as i had to put a HD cover on him to avoid slip when towing. got very heavy in traffic, so u just drove him without touching the clutch pedal, never cruched a gear either. just have to not stop i.e. slow right down a bit further back and roll in tickover 1st, usually set off again before you need to stop Quote Link to comment Share on other sites More sharing options...
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