Outer Limits 4x4 Board

i just want to know some what some info about running a s3 ie; highway speeds, fuel economy(31s, standard diffs)etc...
Im unsure wether i should get the s1 or go all out and get the s3.
thanks for any help.

I run the Series 3 with 31" Simex Muds and find the gearing perfect. 100K's is 3500 - 3600RPM Fuel economy stayed much the same as stock. I run standard diffs.

im getting 5.14 calmini gears... 18.3% high range reduction... much more suited to 31's than the s3 i reckon... s3 would be more 32/33's area. and the calmini ones are cheaper and come with gaskets bearings and oil! =)

My Brother has 5.14s on his coily and it works well with 3.9 diffs but i wouldnt use them in my car with 3.7 diffs. I wanted to go bigger tyres but wont do it now because it will get boggy on the road at 100k's. The 6.1 is perfect, but I like revs and momentum.

i would not by rockhopper gears ive seen to sets blow up in the last to weeks . both sets did hardley any work and they both broke in to wheel drive . these gears are ment to be the best but id try to get somthing else.

I have 31's s3 and nt diffs (3.9) and it revs like a mofo Love the s3 but so I'm just gonna fix the gearing with wt centres and maybe bigger tyres

I had S1, and when i ran my 32's i found that it was just a bit high to keep descent performance on the street (std WT centres). I am now putting in calmini 5.14 as i smashed me s1. These seem to be a better choice for 31-32 inch tyres on the road, esp if the tyres are a heavy style (swampers etc).
Layto....

so 5.14's wont make a little 1.3 redline by just doing 100
running 31 MTR's atm on NT diffs

down the track I'll be getting WT then putting some pitbull rockers on it
would i have to get a new R & P or would 5.14's handle 33's by themselfs

Im running S4 gears in my WT on 31" extremes, and its about the same as 26" street tyres stock, works nice.

ofr57 wrote:so 5.14's wont make a little 1.3 redline by just doing 100
running 31 MTR's atm on NT diffs

down the track I'll be getting WT then putting some pitbull rockers on it
would i have to get a new R & P or would 5.14's handle 33's by themselfs

Will be fine.

Layto....

Im also running series 4 and havnt had a problem off and on road. Im running 31'muddies and the gearing for on road is perfect.

yeah that what I'm thinking ... either go S4 or trail gear (seems pritty good stuff what i hear) or 5.14's


5.14s say they give more reduction in high though

I ordered a set of gears from LOWRANGE OFFROAD 6.5:1. 20% reduction in high and 187% reduction in low. Should suit 33's and 3.7's. NO QUESTIONS asked replacement guarantee. http://www.lowrangeoffroad.com/samdrivetrain.htm

sanger wrote:Im also running series 4 and havnt had a problem off and on road. Im running 31'muddies and the gearing for on road is perfect.

Had series 4's in my 1.0ltr, also with 31's, off road gearing was super low, the 1.3 and 5 speed would have made things more useful.

want33s wrote:I ordered a set of gears from LOWRANGE OFFROAD 6.5:1. 20% reduction in high and 187% reduction in low. Should suit 33's and 3.7's. NO QUESTIONS asked replacement guarantee. http://www.lowrangeoffroad.com/samdrivetrain.htm

I have been looling at these! Would you be able to let me know what it worked out delievered to your door? PM if ya want! After they go in so do the 31's!

I run Series 3, with 31 simexs and 3.9, I still think it needs more on the highway! I think a 4.3 ratio would be perfect!

Bill - have you got NT centres in yours?... sneaky

If you are interested in the best balance between high and low, look at the Trail Tough 6.4:1 - it has the highest high range (only an 18% drop from memory) Also quite a good price and, apparently, a "no questions asked" warranty.

31's are about 19% taller than stock.

If you want to "correct" 31's with just a transfer, any 6:1 gearset will go pretty close as they range from 18-24% reduction.

What you can't take into account is the effect of higher rolling resistance and increased aerodynamic drag at speed from the bigger tyres.

Steve.

Gwagensteve wrote: What you can't take into account is the effect of higher rolling resistance and increased aerodynamic drag at speed from the bigger tyres.

Steve.

can you explain this abit more
I'm starting to think to go with the trial tough so i have less to worry about when i go 33"

Oh, and weight.

Wider and more aggressive tyres take more power to push. The added weight of heavier wheels and tyres take the edge off it as well.

At the end of the day, of you gear the car exactly back to stock, it will be slower than it was when standard. One way around this is to gear a bit shorter than stock so you are carrying a few more revs than stock. Another way is to look for torque increases in the motor (but only if they apply at cruising revs)

I don't daily drive my sierra, so for me, if my car is slow and noisy I will live with it, but if refinement etc is important, then you will have to tread carefully to get decent drivability.

an obvious solution is to run the narrowest, least aggressive tyre possible in the diameter you need for correct gearing on road, and leave the wider, more aggressive tyres for trip only.

Maybe, 3.9's and a trail tough 6:1 would be sweet for road use- or a 24% reduction high range with WT gears. I guess the answer lies a bit with your expectation of what the car should drive like.

As an aside though, nobody would expect a patrol to drive like stock with 37's on it, so you can't expect a sierra to drive like stock with 31's on it.

sorry if t his doesn;t really answer your question

Steve.

suzuki boy wrote:

want33s wrote:I ordered a set of gears from LOWRANGE OFFROAD 6.5:1. 20% reduction in high and 187% reduction in low. Should suit 33's and 3.7's. NO QUESTIONS asked replacement guarantee. http://www.lowrangeoffroad.com/samdrivetrain.htm

I have been looling at these! Would you be able to let me know what it worked out delievered to your door? PM if ya want! After they go in so do the 31's!

TRANSFER GEARS ....US$475
TRANSFER Rebuid kit ..... US$79
Large Input Shaft ...... US$97
Freight ....... US$100 = US$751 = AU$976
Inflation rate will change this figure daily but you are looking at about $1000. As soon as these go in I get 33's. Then I'll have to make a new rear bar and spare carrier!

Gwagensteve wrote:Oh, and weight.

Wider and more aggressive tyres take more power to push. The added weight of heavier wheels and tyres take the edge off it as well.

At the end of the day, of you gear the car exactly back to stock, it will be slower than it was when standard. One way around this is to gear a bit shorter than stock so you are carrying a few more revs than stock. Another way is to look for torque increases in the motor (but only if they apply at cruising revs)

I don't daily drive my sierra, so for me, if my car is slow and noisy I will live with it, but if refinement etc is important, then you will have to tread carefully to get decent drivability.

an obvious solution is to run the narrowest, least aggressive tyre possible in the diameter you need for correct gearing on road, and leave the wider, more aggressive tyres for trip only.

Maybe, 3.9's and a trail tough 6:1 would be sweet for road use- or a 24% reduction high range with WT gears. I guess the answer lies a bit with your expectation of what the car should drive like.

As an aside though, nobody would expect a patrol to drive like stock with 37's on it, so you can't expect a sierra to drive like stock with 31's on it.

sorry if t his doesn;t really answer your question

Steve.

yeah it does ... its just trying to look at what is right I'll most likly keep 31's as daily's an have 33's for play

was on the trail tough website ... looking at the 6.4:1 guess you where talking of those ... it says it only has a 17% high range reduction compaired to the trail gear ones which is 20% .... if i am right in my assumption the the one with the least amount of reduction in high would be the best for road driving because it wont have to rev as much to move

one thing I've thought about if i put low gears in is seeing if i could tap a line into the transfer case an connect a oil cooler to the transfer case with a pump in the line so it doesn't over heat as much - extending the life of the gears ... wacky idea

want33s wrote:

suzuki boy wrote:

want33s wrote:I ordered a set of gears from LOWRANGE OFFROAD 6.5:1. 20% reduction in high and 187% reduction in low. Should suit 33's and 3.7's. NO QUESTIONS asked replacement guarantee. http://www.lowrangeoffroad.com/samdrivetrain.htm

I have been looling at these! Would you be able to let me know what it worked out delievered to your door? PM if ya want! After they go in so do the 31's!

TRANSFER GEARS ....US$475
TRANSFER Rebuid kit ..... US$79
Large Input Shaft ...... US$97
Freight ....... US$100 = US$751 = AU$976
Inflation rate will change this figure daily but you are looking at about $1000. As soon as these go in I get 33's. Then I'll have to make a new rear bar and spare carrier!

Yep they sound like the go!

A few more weeks then i'll order them!

ive been wanting to get the calmini 5.14 when tax time comes around, but they seem quite a bit more dearer then the lowrange- offroad gear, it seems like you can get the 4.9's delievered for under 800 aud, when the current exchange rates, ive emailed them and will hopefully get an response soon.
i run 3.9 centres sitting on 30/31, and i drive highways alot. The lowrange bloke said 6.5 would be too low(20% highrange) and would be revving way to much. i wouldnt mind sitting on 3500rpm - 3800rpm at 100k's. the 4.9's offer a 16% reduction in high. and would make crawl ratio 66:1.
what i cant understand is why the 6.5 gears are cheaper then the 4.9's?
edit: emailed back.
Sorry for this automatic response, but will be out of the office from the 9th
through the 13th of May testing some products on the trails in Moab, Utah.

We will still be returning your e-mails and calls during this time but not as
quick as we would like so please be patient.

Have a great weekend.
Low Range Off-Road

will have to ask them why prices are different.

I'm guessing supply on demand

Spike -

some reading for ya

http://www.outerlimits4x4.com/viewtopic ... ht=gearing

does anyone know what the highrange ratio is for the 4.9:1 tcase? when it says 20% im guessing the ratio would be 1.2:1 for highrange(going on the standard ratio of 1:1, if thats correct)

is there a way to work out how many rpm's at 100k's with 31?
im sure i could work it out, but time and effort

Stock sierra high range is about 1.4:1, so + 20% will be about 1.68:1

If you have stock diffs your cruise revs will be pretty close to stock. - about 17% for tyres or something, +20% for the case.

Steve.

got a reply from lowrange dudes, was asking how much shipping was and why the 6.5's were cheaper then 4.9's.

I get them [the gears] from two different suppliers and the 6.5 gears are ordered in sets of 500 by my supplier so they are able to get them for much better prices.
All prices are quoted in US dollars.
Sean

hi sean,
can you please advise why the 6.5 gears are cheaper than the 4.9's?
was that $110 for shipping in usd?

i got a set of 6.5 throught sean at lowrange offroad about a month ago.
i order them on the tuesday and they were at my door in sunny old tamworth nsw on the following monday at 8.30 in the morning .
all up it cost me $716.55 au.
they were sent global express through usps / australia post.
i used paypal and at the time the aussie dolla was at 81c us

i was very impressed

even got two decent lowrange off road stickers for the toolbox

matt

has n e one had any or heard of any promblems with the BBM S4 gears?