| [ Total Views: 670 | Total Replies: 14 | Thread Id: 7317 ] |
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 phatrat
A.k.a.: steve
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| posted on June 9th, 2003 at 05:21 PM |
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gearbox ratio
would someone please post the ratio's of the 1800 and 2ltr kombi boxs...or the final gear of the two....need to calculate RPM's
Thankyou.
[Edited on 9-6-2003 by DakDat]
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Baja Wes
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| posted on June 9th, 2003 at 06:12 PM |
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Gearbox 1st 2nd 3rd 4th diff
1800 5-rib 3.8 2.06 1.26 0.88 4.857
2000 6-rib 3.8 2.06 1.26 0.88 4.57
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phatrat
A.k.a.: steve
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| posted on June 9th, 2003 at 08:13 PM |
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if they are correct, which they would be then it's pointless changing the box to lower the RPM V's road speed...
Perhaps a 5 speed from a later model bus or perhaps 15inch rims??
ppl any idea's
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Baja Wes
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| posted on June 9th, 2003 at 08:18 PM |
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I put a 0.70:1 4th gear set in my 6-rib to drop the rpm at 100kph
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59 BUS
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| posted on June 10th, 2003 at 10:52 AM |
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What could I do to a 3 rib box (1600)to drop my RPM, which is currently sitting at 4000rpm at 100kph?
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Baja Wes
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| posted on June 10th, 2003 at 01:18 PM |
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* put a 6-rib in it.
or
* put a 5 rib R&P in it
or
buy an albins custom 4th gear set
or
put bigger tyres on.
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Andy42
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| posted on June 10th, 2003 at 08:07 PM |
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What ratios are the 1600 kombi box |
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phatrat
A.k.a.: steve
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| posted on June 11th, 2003 at 04:36 PM |
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Andy
Don't quote me but I think they are simular to the 1800...
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phatrat
A.k.a.: steve
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| posted on June 11th, 2003 at 04:45 PM |
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| Quote: | Originally
posted by 59 BUS
What could I do to a 3 rib box (1600)to drop my RPM, which is currently sitting at 4000rpm at 100kph?
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Mine is pretty much the same, with the 1800 box.
you must have a very strong motor or a lot of oil leaks.
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KruizinKombi
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| posted on June 11th, 2003 at 05:47 PM |
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Wes, what was the 0.70 conversion worth?
Kruizin Kol
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Baja Wes
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| posted on June 12th, 2003 at 08:28 AM |
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Gearbox 1st 2nd 3rd 4th diff
1600 3-rib 3.8 2.06 1.26 0.82 5.375
1800 5-rib 3.8 2.06 1.26 0.88 4.857
2000 6-rib 3.8 2.06 1.26 0.88 4.57
so in 4th, the overall ratio of the 1600 is 4.41. The 1800 is 4.27 and the 2lt is 4.02.
The 1600 and 1800 are both 002 gearboxes, and can have the internals swapped. A good box is the 1800 with the 1600's 0.82 4th in it. This
decreases it's overall ratio in 4th to 3.98 which is slightly better than the 6-rib.
My albins gearset cost me $350 which I think is pretty good. Then you have to get it put in as well...
Dakdat, I think your cheapest solution is to put a 3-rib 0.82 4th in your 5-rib box. This will give you better highway gearing than the 6-rib, for
little cost. If you want better highway gearing you will need a custom gearset like me.
59bus, you could also go to the 5-rib with a 0.82 4th. The 5 rib will be a direct swap for your 3 rib box (may have to change input shafts depending
on what your running).
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Baja Wes
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| posted on June 12th, 2003 at 12:10 PM |
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for anyone with Excel 2000, you can download a cool program I made that lets you do a heap of things (calculate acceleration), one of those things
being plot gear ratio charts and calculate engine rpm at any speed in any gear.
go here to check it out
http://offroadvw.net/tech/calc.htm
this is my cars gear chart
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KruizinKombi
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| posted on June 12th, 2003 at 02:39 PM |
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So theoretically your Baja should go to 340 kmh in fourth gear ??? :o:o:o You must get great economy at 100 kmh! :thumb
Kruizin Kol
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Baja Wes
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| posted on June 12th, 2003 at 03:27 PM |
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The same Excel program shows that I am aerodynamically limited to about 192kph 
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phatrat
A.k.a.: steve
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| posted on June 12th, 2003 at 05:22 PM |
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192kph up a sand dune...
or along fraser island....:o:o:o
[Edited on 12-6-2003 by DakDat]
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Baja Wes
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| posted on June 12th, 2003 at 10:29 PM |
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dakdat sent me a U2U, but I thought it's best to answer here for the benefit of others.
he said
| Quote: | Wes to achevie the
rpm's I would like I think this is my best bet in the long run...
Just 2 Q?
Should I have them fitted to my 1800 box? or should I invest in a 2ltr?
and where do I buy albin 4th gear set..
Thanks for all your help!!!
steve
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You can find albins gears, and buy them directly from http://www.albinsgear.com.au/
If you think you will break a gearbox from too much HP, go for the 6-rib. It is a fair bit stronger. But it is slightly longer (10-20mm). If
you've got a modest 2L datsun motor then the 1800 will probably be fine.
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