[experament-u2]

hi all
soon i will be getting a set of 30x9.5 tires for my sierra (leafy) but im torn between witch set of transfer gears to run?

after searching and reading a bit about them 6.5s looks to be to low so im left with either 4.9 or 4.16. witch one is better for 30s?

4.16 are recomended but the extra reduction of the 4.9s sounds like it will be handy, im not sure how much the 4.9s will effect dd and highway driving though.

and is there really much of a difference between the two running 30s because the cheaper 4.16s woudl be a better option if not

the car is mainly my daily drive with a bit of highway driving, but dose get offroad every chance i can get.

cheers

[steak_knife]

4.9, cause once you go 31's you'll need em..

[IN2DEP]

What about for 32s ??

[experament-u2]

unfortunatly i will be sticking to 30s due to legal bullshit...

[steak_knife]

experament-u2 wrote:

unfortunatly i will be sticking to 30s due to legal bullshit...

I'd still lean towards 4.9.

IN2DEP wrote:

What about for 32s ??

6.5's...

[Teracis]

I'm still waiting for my 6.5's and I'll be running those with my current 235/75/15's (29's) until I need new tyres at which point I'll go up to 31's.

I'll let you know how it goes, I used an online calculator to calculate the speeds for the gears e.t.c and I don't think it'll be much of a problem (none once I get 31's) because I don't do much highway driving.

This is the calculator http://www.grimmjeeper.com/metric_gears.html

[LAY80N]

Just run 6.5's, will be okay in high range, and in low range, if you want more wheel speed just shift up.

Layto....

[mrw82]

i'm running 4:16 transfer gears on 30" and it's great. but it's a 1 litre so has 4.11 diff ratios. in a 1.3 I'd definately go for 4.9's


6.5's are overkill for even 31s in my opinion.

[Rhino]

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

[Rusho]

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

[experament-u2]

6.5 sound extreamly tempting being cheaper, having a lifetime warranty and lower ratio, also fitting instructions make everything easier.

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

what kind of revs do you sit on at 100kmh Rhino and Rusho?

LAY80N wrote:

Just run 6.5's, will be okay in high range, and in low range, if you want more wheel speed just shift up.

Layto....

when you say ok in hirange, is it a ok drives well in highrange?
and ok as in drives wicked off road because of the extreamly low gearing?

[JrZook]

Im on 4.9's with WT 3.7 diffs and 30's BFG KM2's
3500RPM at a true 100. I find these are a nice compromise for on road gearing as well as offroad.

Dan

[steak_knife]

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

[shep]

i have small 31s(measure close to 30s) and 6.5s at 100kph revs are 3600. checked by GPS.

i reckon it would be better if it revved a bit harder like 3800 or 3900 at 100kph

6.5s give a good spread of gears with 5th low being a little lower then 1st high so there is a gear for what ever speed ya want, well not 200kph.

[Rhino]

steak_knife wrote:

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

I'll have a look using my GPS tomorrow and let ya know what revs im sitting on.

[steak_knife]

Rhino wrote:

I'll have a look using my GPS tomorrow and let ya know what revs im sitting on.

Cheer's wobbly man...

[experament-u2]

6.5s are looking good atm
running 30s with 6.5s would i need to strengthen the transfer mounts? eg sort out a cradle or HD crossmember?
and is there anything else i need to worrie about with running 6.5s

[Rhino]

experament-u2 wrote:

6.5s are looking good atm
running 30s with 6.5s would i need to strengthen the transfer mounts? eg sort out a cradle or HD crossmember?
and is there anything else i need to worrie about with running 6.5s

Alot of people say you will constantly break transfer mounts but i havent broke any yet maybe im just lucky.
My transfer arms are a little twisted now tho but that was my fault trying to pull a pajero out of a bog.

[TryHard]

experament-u2 wrote:

6.5s are looking good atm
running 30s with 6.5s would i need to strengthen the transfer mounts? eg sort out a cradle or HD crossmember?
and is there anything else i need to worrie about with running 6.5s

hey man no u dont but u will find that u will posably brake transfer mounts .. if u wheel it to hard .. if u have a locker u shouldnt be braking mounts .. u can get Soilid mounts but alot of people say not to run them ...

i currently run 6.5s and dont know what i wiould now do with out them also i run 31s bigorns and should be running 33s soon ish

[Highway-Star]

This might sound like extra work; but don't choose your transfer gears because of the high range gearing they offer. Choose the transfer gears on the low range gearing you want, then correct high range as much as you can by changing diff ratios. If the transfer gears you want will make you rev a bit more, and you are running the highest diffs you can (3.7 for a Sierra) thats probably not a big deal as Suzuki engines like rpm.


As for what lowrange gearing you want, we could all argue this for pages and pages, and you could likely be more confused by the end of it . Watch or better yet, get in some cars and see for yourself if you can.

My own personal opinion is 4.9 or 5.12 transfer gears for all 4 stroke Suzukis, anything from an F8 to a G16 anyway (6.5's seem to work for 2 strokes). Both the 4.9's and 5.12's have essentially the same difference between high and low, with the 5.12's have a bit more primary reduction, essentially acting like a set of 4.9's with slightly lower diff ratios. From what I have seen of 4.1's the gear spacing seems to end up a bit wrong

[Rusho]

steak_knife wrote:

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

4100rpm @ 100km/h

[stiky]

i sit at about 3300 at 100 (speedo speed not true speed ) with my 30's any idea of the ratio i could be running?

[stiky]

stiky wrote:

i sit at about 3300 at 100 (speedo speed not true speed ) with my 30's any idea of the ratio i could be running?

its a leafy with a b16a

[JrZook]

Rusho wrote:

steak_knife wrote:

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

4100rpm @ 100km/h

What diff gears?

[JrZook]

stiky wrote:

stiky wrote:

i sit at about 3300 at 100 (speedo speed not true speed ) with my 30's any idea of the ratio i could be running?

its a leafy with a b16a

Sounds dead stock WT to me which would be like 1.4:1 high range??

[experament-u2]

Highway-Star wrote:

This might sound like extra work; but don't choose your transfer gears because of the high range gearing they offer. Choose the transfer gears on the low range gearing you want, then correct high range as much as you can by changing diff ratios. If the transfer gears you want will make you rev a bit more, and you are running the highest diffs you can (3.7 for a Sierra) thats probably not a big deal as Suzuki engines like rpm.


As for what lowrange gearing you want, we could all argue this for pages and pages, and you could likely be more confused by the end of it . Watch or better yet, get in some cars and see for yourself if you can.

My own personal opinion is 4.9 or 5.12 transfer gears for all 4 stroke Suzukis, anything from an F8 to a G16 anyway (6.5's seem to work for 2 strokes). Both the 4.9's and 5.12's have essentially the same difference between high and low, with the 5.12's have a bit more primary reduction, essentially acting like a set of 4.9's with slightly lower diff ratios. From what I have seen of 4.1's the gear spacing seems to end up a bit wrong

thanks Highway-Star thats the most usefull advice on gearing i have found so far other than to get gearing

[stiky]

cool cheers i though it was stock

[Rhino]

Rusho wrote:

steak_knife wrote:

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

4100rpm @ 100km/h

is that using GPS rusho??
mine is 3700rpm @ 100km/h

[Rusho]

Rhino wrote:

Rusho wrote:

steak_knife wrote:

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

4100rpm @ 100km/h

is that using GPS rusho??
mine is 3700rpm @ 100km/h

Dodgy iPhone gps...it is pretty accurate though. I have tested it out on a few new cars. I double checked revs this arvo. It's probably more around 3900

[alex]

Rusho wrote:

Rhino wrote:

Rusho wrote:

steak_knife wrote:

Rusho wrote:

Rhino wrote:

I run 6.5's on 30's and my Zook will happily sit on 120 all day on the highway,
Low 1st is a little low for climbing but great for driving slowly over rocks, ruts and down hills.

Well said. Couldn't agree more

What Rpm at 100????

4100rpm @ 100km/h

is that using GPS rusho??
mine is 3700rpm @ 100km/h

Dodgy iPhone gps...it is pretty accurate though. I have tested it out on a few new cars. I double checked revs this arvo. It's probably more around 3900

doesnt coilys have 3.9 diff gears and rhino has 3.7???