Final drive ratios

ahoogah Seriously Crusin Dubber

135 posts · joined Oct 2009 · 26 Jan 2011, 7:56 pm

#823331

Hey guys, looking at changing the diff ratio in an 89 T3 van,
currently running 4.83:1
Would a 3.9 be too high?

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 · 27 Jan 2011, 2:16 pm

#823414

probably.

you want the 4:56 that was in the 091/2 litre box.

"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

dogo Seriously Crusin Dubber

128 posts · joined Oct 2005 · 27 Jan 2011, 2:20 pm

#823416

Not if you have enough HP to push it.

ahoogah Seriously Crusin Dubber

135 posts · joined Oct 2009 · 27 Jan 2011, 4:31 pm

#823432

dogo wrote:Not if you have enough HP to push it.

Running a healthy stock ej22. Revs too high atm

rocknrob Insano Dub Head

844 posts · joined Dec 2003 · 27 Jan 2011, 5:07 pm

#823440

just stick some bigger diameter tyres on the back👍

ahoogah Seriously Crusin Dubber

135 posts · joined Oct 2009 · 4 Feb 2011, 3:00 pm

#824710

bigger tyres could work well, currently running std 185/14's
1st 12kmh (or slip start in 2nd)
2nd 25kmh

Would anyone have any larger wheels/tyres that I could borrow/try.
15"-16" 89T3.
Thanks,Dave.

rocknrob Insano Dub Head

844 posts · joined Dec 2003 · 4 Feb 2011, 3:12 pm

#824715

Hi Dave, I'm in labrador you are welcome to try some of my 16's...40k in 1st 70 in 2nd only trouble is most non standard rims require longer studs...cheers Rob

ahoogah Seriously Crusin Dubber

135 posts · joined Oct 2009 · 4 Feb 2011, 3:27 pm

#824718

Thanks Rob, what size tyres are you running on what type of wheel.
Cheers, Dave.

rocknrob Insano Dub Head

844 posts · joined Dec 2003 · 4 Feb 2011, 6:09 pm

#824738

Hi Dave i currently have my country mouse tyres on...i went camping last weekend but for extended road use i run my city mouse tyres...both work out the same diameter...gives 105km/hr at 3000rpm

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dirt tyres are 245/70/16 road tyres 255/65/16

perfect for a kombi with sooby motivation

rocknrob Insano Dub Head

844 posts · joined Dec 2003 · 4 Feb 2011, 6:11 pm

#824739

the steelies are BA falcon 16x6.5 and the mags mercedes 16x7.5...both have ET around 36

ahoogah Seriously Crusin Dubber

135 posts · joined Oct 2009 · 4 Feb 2011, 8:30 pm

#824782

rocknrob wrote:the steelies are BA falcon 16x6.5 and the mags mercedes 16x7.5...both have ET around 36

Thanks Rob, falcon rims should be easy to get,do they require longer studs.
They fill the wheel well nicely and will give me the revs I am after. What sort of speed sensor do you run.
Thanks again,Dave.

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 · 4 Feb 2011, 9:28 pm

#824810

rocknrob wrote:the steelies are BA falcon 16x6.5 and the mags mercedes 16x7.5...both have ET around 36

You drill the steelies or get them done somewhere? If you did it, how? and if someone else did it, what sort of cost?

If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.