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Mk + sd33t + 31's+4.3 + 100km/hr = how many rpm ?
Posted: Mon Oct 29, 2007 5:08 pm
by pongo
I dont think my 5 speed is in a LWB sd33t model, My shorty was the same and used to sit about 2100/2200 rpm on the same tyres and diffs as my lwb which is now doing about 2600rpm
With the 35's i just sold it seemed sit about 2100 at 100km/hr
So what does yours do? Any ideas what my box is out of , maybe l28 ?
Dont wanna go to the hassle of swapping boxes to find out my memory was wrong
Appreciate the help
Posted: Mon Oct 29, 2007 6:52 pm
by macca81
what gear u wanting rpm for? 4th with 35s is about 2800 for me... well it was when my engine had a tacho anyway:D
Posted: Mon Oct 29, 2007 6:56 pm
by pongo
sorry my bad, 5th in particular, but any help is welcomed
RPM's
Posted: Mon Oct 29, 2007 7:58 pm
by Sterlo
Hey All
Well with 5th and 4.6 diffs u will be doing about 2300-2400 @100km/hr. In 4th @ 100km/hr 3000rpm. 4.3 diffs were fitted to most SWB turbo disels giving around 2000-2100RPM in 5th @ 100km/hr..
All the 5 speeds had the same gear ratios, except for the cabstar box it had lower 1st and higher 5th. With 4th gear being 1:1.
I have a SWB turbo diesel with 4.6 diffs, now on 35's this is great about 10km/liter. 2300RPM at true 100km/hr. but when put standard 750R16 tyres back on i cant even get 7.5km to the liter!!! Hope this helps
Sterlo
Posted: Tue Oct 30, 2007 9:19 pm
by offroader-rama
for all your gearing needs
check this link
outerlimits should do one similar would save a lot of questions
http://www.novak-adapt.com/knowledge/gearing.htm
this may help in link if unknown
62miles = 100ks
most 5th gears (overdrives) are some where between .6 - .85