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6:5 gears VS 1ltr tcase on road
6:5 gears VS 1ltr tcase on road
Hmmm just swapped my 6:5 tcase which is supposed to be 20% lower than standard in high, with a 1ltr case and it hasnt changed the revs on road at all. Is that right. Do i have to change diff gears if i want to lower the on road revs a bit ?
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[olllllo]
[olllllo]
Re: 6:5 gears VS 1ltr tcase on road
Mate your 6.5 case IS 20% lower in high range. Unfortunately for you, its 20% lower than a 1.3L case. A 1L case is 12% lower than a 1.3L case from factory. So really, with the 6.5 case, you are really only 8% or so lower than a standard 1L case.mrRocky wrote:Hmmm just swapped my 6:5 tcase which is supposed to be 20% lower than standard in high, with a 1ltr case and it hasnt changed the revs on road at all. Is that right. Do i have to change diff gears if i want to lower the on road revs a bit ?
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thats freaky-weird!
my 5.14 tcase is 18.3% (i think) reduction hi-range and has brought my RPM back very close to stock... maybe check the specs on where you got the 6.5's from - perhaps the low range is lower but the high range isnt as low? (doubt it though).
Why'd you change to the 1L case anyway?
my 5.14 tcase is 18.3% (i think) reduction hi-range and has brought my RPM back very close to stock... maybe check the specs on where you got the 6.5's from - perhaps the low range is lower but the high range isnt as low? (doubt it though).
Why'd you change to the 1L case anyway?
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sitting on 85 on the speedo (92 on gps) my tacho reads 3900rpm
before and after i swaped back to the 1ltr case.
Its really annoying, i want to be able to sit on 100 on the speedo doing about 3900rpm not at 85. I will put the 6:5's back in when i want to go crawling or do comps but the at the moment its weekends away that are on the agenda and 85 is a major p.i.t.a.
before and after i swaped back to the 1ltr case.
Its really annoying, i want to be able to sit on 100 on the speedo doing about 3900rpm not at 85. I will put the 6:5's back in when i want to go crawling or do comps but the at the moment its weekends away that are on the agenda and 85 is a major p.i.t.a.
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[olllllo]
[olllllo]
hey mr rocky, did you go from a 12% (1lt) case to a 20% case expecting it to lower the revs 
what gearbox are you using? my numbers say at 100ks with 31s, 4.1diffs, .864 5th and 1.58 maruti tranfer you should be revving at 3761 rpm. if you go to a 3.7, it will drop it to 3394rpm. but these numbers are well down on what you say you are getting.
when i did the 1.6 and 5speed in to my maruti it was still screaming in pain at 100. changed to 3.7 and made it a lot more comforable ( no tacho, just going buy noise). this has been on stock tyres for 18 months and has been ok. i trialed some 265/70/15 on it last week and i think the gearing in high range is perfect. by the calculator its at 3554 rpm at 100.
hope some of this helps
what gearbox are you using? my numbers say at 100ks with 31s, 4.1diffs, .864 5th and 1.58 maruti tranfer you should be revving at 3761 rpm. if you go to a 3.7, it will drop it to 3394rpm. but these numbers are well down on what you say you are getting.when i did the 1.6 and 5speed in to my maruti it was still screaming in pain at 100. changed to 3.7 and made it a lot more comforable ( no tacho, just going buy noise). this has been on stock tyres for 18 months and has been ok. i trialed some 265/70/15 on it last week and i think the gearing in high range is perfect. by the calculator its at 3554 rpm at 100.
hope some of this helps
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for sale: wt diffs, snake hi steer, maruti 4.1 wt centres,
for sale: wt diffs, snake hi steer, maruti 4.1 wt centres,
4.1/3.9 = 1.05.mrRocky wrote:yeah i have 4.1 diffs coming out my ears. If i drop to 3.9's will that make a noticeable difference.
so this would change your revs by 5% so instead of 85km at 3900 your would do 89km/h. so sweet fark all.
sierra gearing is a PIA.
some one metioned 0.864 5th gear as well. didnt most 5 speeds come out with an approx 0.78 - 0.79 5th gear?
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Goto *
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ok, i went from a 1ltr 4 spd with 4.1 diffs and 6:5 tcase, to a 1.6 baleno with mystery 5spd and now back to the 1ltr case to try and lower the revs which with an extra gear and a 1ltr case i thought it would make a bigger differance.
just got an 89 hardtop so i might swap the diffs over, will they be 3.7 or 3.9 in the hardtop.
just got an 89 hardtop so i might swap the diffs over, will they be 3.7 or 3.9 in the hardtop.
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