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Lots Of Gearing Information for Sierras
just read what others have posted regarding ratios. 
i only posted a reply for gutless, coz i had found the vit ratios the same day he asked.
everyone else reads the thread and gets out their calculator/abacus/excel/stick-in-sand/pen-and-paper and works it out.
crawl ratio = gearbox 1st gear x transfer gear low ratio x diff ratio
i only posted a reply for gutless, coz i had found the vit ratios the same day he asked.
everyone else reads the thread and gets out their calculator/abacus/excel/stick-in-sand/pen-and-paper and works it out.
crawl ratio = gearbox 1st gear x transfer gear low ratio x diff ratio
ht zook with bog, rust and mt's
this is my wheelbase |<-------->|
this is my wheelbase |<-------->|
Bad JuJu, if the s3 brings your high range down 21%, and the 32" tyres take it up 23%, then your speedo should be about 2% out of whack.
on standard tyres, when your speedo reads 100km/h, youre actually doing 79km/h
then you put on your 23% larger, 32.6" tyres, and youre doing 102km/h
on standard tyres, when your speedo reads 100km/h, youre actually doing 79km/h
then you put on your 23% larger, 32.6" tyres, and youre doing 102km/h
ht zook with bog, rust and mt's
this is my wheelbase |<-------->|
this is my wheelbase |<-------->|
. (going by 5.29's being 9% lower than 5.12's, running 36"s) Would this be correct? 
The reason I asked is cause at 80km/h on the speedo, gps says im doing 101km/hmunga wrote:Bad JuJu, if the s3 brings your high range down 21%, and the 32" tyres take it up 23%, then your speedo should be about 2% out of whack.
on standard tyres, when your speedo reads 100km/h, youre actually doing 79km/h
then you put on your 23% larger, 32.6" tyres, and youre doing 102km/h
Posting quality not quantity!
Wanted: Stock HiLux Front Leaf Springs
Wanted: Stock HiLux Front Leaf Springs
Ive got 3.652 x 1.816 x 5.1 x 4.1 = 138.67578912ofr57 wrote:3.652 x 6.50 x 5.125 = 121.65725
only dreams are made of
try this program http://www.4lo.com/calc/gearratio.htm
P.E.T.A
People eating tasty animals.
People eating tasty animals.
i recall someone saying anything over 100 crawl ratio is useless. Im starting to agree with them. I like the 119.6 on off camber stuff, but as i found out on real steep rocks its too slow. & whats worse, 2nd isnt low enough to give me the control i want. So im gonna change from 5.29s to 4.56s, coming down to 103.15. im hoping this will work out nicely...ofr57 wrote:3.652 x 6.50 x 5.125 = 121.65725
only dreams are made of
if it doesnt, i get 16% better economy, & 16% more top end, so it wont be a total loss.
I guess it all depends on what tyre size you are running.When i had 33s i was at 92:1 which was perfect but now i have the 37s i needed lower gearing as i had to bump the clutch all the time to get up vertical inclines.I could not afford to ahange the diff ratios cause i would have had to but aftermarket ratios so i went wth duals.CAP51Z wrote:i recall someone saying anything over 100 crawl ratio is useless. Im starting to agree with them. I like the 119.6 on off camber stuff, but as i found out on real steep rocks its too slow. & whats worse, 2nd isnt low enough to give me the control i want. So im gonna change from 5.29s to 4.56s, coming down to 103.15. im hoping this will work out nicely...ofr57 wrote:3.652 x 6.50 x 5.125 = 121.65725
only dreams are made of
if it doesnt, i get 16% better economy, & 16% more top end, so it wont be a total loss.
P.E.T.A
People eating tasty animals.
People eating tasty animals.
ZOOK60 wrote:I guess it all depends on what tyre size you are running.When i had 33s i was at 92:1 which was perfect but now i have the 37s i needed lower gearing as i had to bump the clutch all the time to get up vertical inclines.I could not afford to ahange the diff ratios cause i would have had to but aftermarket ratios so i went wth duals.CAP51Z wrote:i recall someone saying anything over 100 crawl ratio is useless. Im starting to agree with them. I like the 119.6 on off camber stuff, but as i found out on real steep rocks its too slow. & whats worse, 2nd isnt low enough to give me the control i want. So im gonna change from 5.29s to 4.56s, coming down to 103.15. im hoping this will work out nicely...ofr57 wrote:3.652 x 6.50 x 5.125 = 121.65725
only dreams are made of
if it doesnt, i get 16% better economy, & 16% more top end, so it wont be a total loss.
If i had 138.67 my 2nd gear would be useful. Id probably never use 1st. I run 36 ET2s, so your probably half a gear lower than me on 37s. Part of it is also PSI, as i was running 6-7 PSI, now im runnin 5PSI front & 4-4.5PSI Rear, with better grip aiding the crawlability. I still want a tad faster, so onwards i go.
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