| Author | Message | ||
     Greg Hassler (Ghassler) New Member Username: Ghassler Post Number: 7 Registered: 07-2003 |
I recently put OME shocks and springs on my '01 DII, as well as 265/75/R16 tires. The gearing was arguably too tall from the factory, but now with the larger tires overdrive is about useless. I pull a trailer now and then as well, and pretty much leave it in third all of the time when pulling, even on the highway. So my question is this: how do I lower the gearing? Hopefully there is something simple like a ring and pinion kit, but I haven't found anything... | ||
| Brian Dickens (Bri) Senior Member Username: Bri Post Number: 737 Registered: 08-2002 |
Ring and pinion will do it. Most people go to 4.10, but there are higher ratios to be had as well. It is only the tires causing the problem. You could always by a second set of rims to mount the bigger tires on and use the smaller ones for towing. | ||
| Curtis N (Curtis) Dweb Lounge Member Username: Curtis Post Number: 769 Registered: 05-2002 |
Ah - the pandoras box of bigger tires. Call Bill at Great Basin Rovers 801-486-5049. He is unquestionably the best source for Rover drivetrain parts and expertise. My guess is that he will reccomend new ring and pinion @4.11. However, since you are in there (and if you are CDL capable)you might as well get Tru-Trac diffs or a Detroit Locker/TT combo. They can do this in a delivered third member. Also HD axles (in the rear at least), and maybe then the driveshafts. This combo will not only give you a good towing gear ratio, but make you unstoppable off road. -Curtis | ||
| Greg Davis (Gregdavis) Senior Member Username: Gregdavis Post Number: 1034 Registered: 08-2002 |
Almost ustoppable. Ask me how I know.  Greg, I have all of the above (4.75's, TT, Detroit, HD joints, HD shafts). Just knowing it's there makes a world of difference (as far as peace of mind goes). I recently added Bill's gears and man, what a difference it makes. On road no more wandering between 3rd and 4th gears, no slowing on hills. And off-road!!! Man, it's nice having some engine braking again. I highly recommend his products. And no, he's NOT related to me. | ||
| Curtis N (Curtis) Dweb Lounge Member Username: Curtis Post Number: 773 Registered: 05-2002 |
"Almost ustoppable. Ask me how I know." Uh-oh. What did you do? Why is it that the quote above reminds me of one of those Herbalife bumper stickers: "Lose wight now. Ask me how." | ||
| Aaron Owens (Aaronowens) New Member Username: Aaronowens Post Number: 40 Registered: 10-2002 |
"Almost" being the key word there! Sorry Greg; couldn't help myself. As for the upgraded gears from Bill, those are on the list now as mine downshifts on the slightest uphill. | ||
| Frank Rafka (Mongosd2) Dweb Lounge Member Username: Mongosd2 Post Number: 141 Registered: 02-2003 |
this could be interesting...Greg did you make it up Andrettie Hill? I did  Frank | ||
| Curtis N (Curtis) Dweb Lounge Member Username: Curtis Post Number: 774 Registered: 05-2002 |
Hmmmm...do we have some anecdotal evidence here that Mongo's full TT setup might actually be better than a DL/TT in a DS2? Inquiring minds want to know... | ||
| Frank Rafka (Mongosd2) Dweb Lounge Member Username: Mongosd2 Post Number: 142 Registered: 02-2003 |
stirrin' the pot, I don't have ABS/TC/HDC either. I never got it back from the front cv blow out... frank | ||
| Aaron Owens (Aaronowens) Member Username: Aaronowens Post Number: 41 Registered: 10-2002 |
Curtis, don't forget CDL/ETC. Frank, welcome to the club! | ||
| Frank Rafka (Mongosd2) Dweb Lounge Member Username: Mongosd2 Post Number: 143 Registered: 02-2003 |
Ok, I have a CDL and TT's and 4.11 and a dent in the floorpan from my lead foot, but I'm pushin' 285/75 yoko mt's...I did talk to a couple of folks who sad it couldn't be done... frank | ||
| Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1129 Registered: 02-2002 |
The hill was no problem - even with lil ole 3:54's (+ detroit, tt, and swampers) Actually - that hill was pretty dam fun. Bill | ||
| Frank Rafka (Mongosd2) Dweb Lounge Member Username: Mongosd2 Post Number: 144 Registered: 02-2003 |
lot's of guys made it, intresting to see who didn't...we should move this to general... frank | ||
| Greg Davis (Gregdavis) Senior Member Username: Gregdavis Post Number: 1035 Registered: 08-2002 |
^#%$%@^&*#%$!!!!! No, I didn't make it! Yet a DI w/ identical setup (TT/Detroit/Swampers) did. Still scratching my head on that one. Only thing I can think of is driver skill (or lack of ) and the fact that I was still at 35 psi. But yes, that hill spanked me! | ||
| Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1134 Registered: 02-2002 |
Greg, I was just making fun - I think conditions changed on that hill alot depending on traffic and time of day. Like the big hill on the Goat Trail...on Friday myself, JBS, and Drew all had to winch, but on Saturday we drove right up. Bill | ||
| Greg Hassler (Ghassler) New Member Username: Ghassler Post Number: 8 Registered: 07-2003 |
Thanks for the info guys, I'll give Bill a call sometime. 1 more question if you don't mind - are the 4.75's too low for the highway or are they OK? I'm thinking the 4.11's will put it back in the ballpark of stock, but I'd like to go a bit lower than stock. I don't know what the stock gear is, but if I'm gearing down I might as well do it right. We'll see about lockers and HD axels, might be overkill for me depending on how much it all costs. I would like to get the center diff lock going though. One other thing I should mention - I don't even change my own oil, so if I order all of these parts is this something I can take to my local Land Rover dealer to install? | ||
| Greg Davis (Gregdavis) Senior Member Username: Gregdavis Post Number: 1036 Registered: 08-2002 |
Greg, I'm running 35" tires with the 4.75's and I'm geared lower than I was stock. I think with anything smaller than 35" in diameter, you'll be geared too low. If I were you, I'd stick with the 4.10's. Yes, your dealer could install them, but man, it would be alot of $$. Do you have any local 4x4 shops? They could do them as well and it would probably save you a few hundred $$'s. There's nothing special about setting up the lockers and gears in a Rover compared to any other brand. In fact, because the entire center section comes out, they're probably easier than most. | ||
| Paul D. Morgan (V22guy) Dweb Lounge Member Username: V22guy Post Number: 2026 Registered: 02-2002 |
 I did not make it up the hill. | ||
| Glen A Stromquist (Glen_stromquist) New Member Username: Glen_stromquist Post Number: 9 Registered: 09-2003 |
I'm curious about changing the gear ratio as well, re my post about putting taller rubber on my 95. I didn't even consider changing the diff ratio, as I thought it would be incompatible with the front diff then? Or are we talking about the TC when talking about changing the ring & pinion? cheers! | ||
| Curtis N (Curtis) Dweb Lounge Member Username: Curtis Post Number: 781 Registered: 05-2002 |
Glen, Nope - the ring and pinion are in the diff. You have to change them out in both diffs at the same time. It is a Pandoras box though since tires, diffs, gears, & 1/2 shafts seem to all go together. -C | ||
| Glen A Stromquist (Glen_stromquist) New Member Username: Glen_stromquist Post Number: 10 Registered: 09-2003 |
Thats what I thought, seems like more trouble and expense than I need at this time, think I'll just try to put some taller tires on.But I'd like to get the rpm's down at least a couple of hundred at 100 kmh, and I doubt that tires alone will do that... I'm actually surprised that with a 4sp auto that its geared so low, most vehicles I've driven lately will have an RPM of <2000 at highway speeds, this is the first I've seen in awhile that is over, the only thing else I've driven was the Ford SD trucks with 4.10 diffs. | ||
| Greg Davis (Gregdavis) Senior Member Username: Gregdavis Post Number: 1040 Registered: 08-2002 |
Glen, keep in mind that the 4.0 needs to spin to make any power. I know with mine at anything less than 2k RPM it has NO power. Also, if you get your RPM too low, your mileage will suffer because the engine is not in it's most efficient range. Now that I have switched to the 4.75 gears, my mileage has actually picked up about 2mpg. I can only attribute this to the engine working more efficiently even though it's turning faster. | ||
| Glen A Stromquist (Glen_stromquist) New Member Username: Glen_stromquist Post Number: 12 Registered: 09-2003 |
Yeah, now that I think about it, the V8 does seem a tad lacking on the low-end so gearing higher would likely be a detriment. I'm surprised that they put an engine that is happier with higher rpms in a vehicle like this. I don't do a lot of "serious" 4X4ing now that I live in the flatlands so its not a big deal to me as it would have been back in BC. It has lots of power for passing someone on a hill etc.., but the low-end snappiness is definatly not there. I test drove a v6 trooper the same day we bought the LR and it was noticeably snappier for city driving. Typically I've liked engines with lots of low-end power for off-roading, which was why an inline-6 was far better than a V8 in a pickup truck if you were going to do a lot of serious off-roading. Thats my biggest compaint about my TC Diesel in my Ford CC, gobs of highway power for passing etc.. but pretty well useless for slogging thru the mud at low speeds, my non-turbo diesel in my 92 is MUCH better. | ||
| Luke Tolson (Luke4696) Member Username: Luke4696 Post Number: 245 Registered: 06-2003 |
Ditto on the gears comment. Had a car in college with 3.27's and an auto. I wanted more pep so I put in 4.10's. People thought I was crazy because I went from turning 2050rpm @ 70mph to 2700rpm @ 70 mph. Thing is, I got roughly 2 mpg better with the 4.10's, performance on the street was amazing (I could spin the 315/35/17's like a champ with a stomp of the foot), I was out of the muffler drone zone at highway speeds, and my top end increased because it made overdrive a pulling useable gear. Not that the 4.0 is this motor, but like that car I had in HS and college, this one wants to spin a little more to get things going. Go with the 4.10's, you'll love it | ||
| David Seger (Croakus) Member Username: Croakus Post Number: 49 Registered: 06-2003 |
So where do I buy these gears? And should I install them myself or hire someone? | ||
| Greg Davis (Gregdavis) Senior Member Username: Gregdavis Post Number: 1042 Registered: 08-2002 |
Bill at GreatBasinRovers.com can set you up. His site is undergoing updates, so you should give him a call. Install is very tedious, time consuming, and requires some special tools. If you've never done one, find someone that has. An improper setup will eat your gears in no time. | ||
| Curtis N (Curtis) Dweb Lounge Member Username: Curtis Post Number: 787 Registered: 05-2002 |
"His site is undergoing updates..." LOL - Gotta love Bill, but his site has been undergoing updates since '99. Definitely call him |
