RAV4 2.0 close ratio gearbox into GT4 ??

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Postby CMS-GT4 » Sat Sep 15, 2007 10:55 pm

For those who use the rav4 Box, did you have to modify the rear dif ratio?
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Postby 4V6 » Sun Sep 16, 2007 7:59 am

CMS-GT4 wrote:For those who use the rav4 Box, did you have to modify the rear dif ratio?


No, absolutely not.
The two transfers both have the same ratio.
The different ratio is in the gearbox being a different crownwheel and pinion, so the center and rear diffs just "follow" the changes from the front.

If the transfer diffs were different ratios then maybe youd get some oddball behaviour i think, although because its a viscous coupling it may just affect the torque split...but not sure on that, just speculating. :)
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Postby CMS-GT4 » Sun Sep 16, 2007 8:01 pm

Good to know. Now I will not have to hunt down a rear lsd as well if I did this.
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Postby 4V6 » Mon Sep 17, 2007 9:03 am

Standard diff appears well capable, certainly mines not given any hint of a complaint so far. :)
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Postby stealthgtfour » Mon Sep 17, 2007 2:17 pm

so its a rav box with gt4 front diff and transfer case?
any fitment issues with mounts, starter, clutch or axles that sort of thing besides the shift linkage?

this looks like it would make a great auto-x or rally box
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Postby 4V6 » Mon Sep 17, 2007 3:34 pm

stealthgtfour wrote:so its a rav box with gt4 front diff and transfer case?
any fitment issues with mounts, starter, clutch or axles that sort of thing besides the shift linkage?

this looks like it would make a great auto-x or rally box


Confusion reineth! :)

Its a rav 4 box. Rav 4 front dif ( its in the box) and a rav 4 transfercase.
Standard alltrac rear diff and propshaft.
All the other info you need is on celicatech, theres a writeup and an ongoing thread. Links already provided. :)
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Postby MrWOT » Mon Sep 17, 2007 3:47 pm

The GR/S/VZ/MZ all share the same pattern. From what I've seen a ridiculous hybrid engine could be made from the GR series. The fastest drag alltrac will probably consist of a 4GR/1GR hybrid in the future. The 1GR (4L) has a 94mm bore, 95mm stroke. The 4GR (2.5L) has a 83.1mm bore and a 76.9mm stroke. Drop the 1GR crank (factory forged) into the 4GR block and you could run ridiculous power with custom rods and pistons. If you really want to go nuts, slap the port/direct EMS from the 2GR-FSE on top (2GR is a 3.5L so it will handle it) with a twinscrew blower ~10psi.
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Postby ummmiono » Mon Sep 17, 2007 10:35 pm

what would that compression be like? and its not just a pattern question but fitment also.
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Postby ummmiono » Mon Sep 17, 2007 10:40 pm

does it matter if the engine is from a manual or automatic?junk yard here i come, ok prob not anytime soon.
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Postby stealthgtfour » Tue Sep 18, 2007 10:48 pm

4V6 wrote:Confusion reineth! :)

Its a rav 4 box. Rav 4 front dif ( its in the box) and a rav 4 transfercase.
Standard alltrac rear diff and propshaft.
All the other info you need is on celicatech, theres a writeup and an ongoing thread. Links already provided. :)


thanks
confusion alleviated
Mark

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Postby airr04 » Mon Feb 18, 2008 2:15 am

hey 4v6 where did you learn to do all of this stuff. that sounds like a lot of work but after looking at your pics and thinking about it. does not sound that bad at all. just takes some time.
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Re: RAV4 2.0 close ratio gearbox into GT4 ??

Postby CMS-GT4 » Wed Sep 04, 2013 4:37 pm

Looks like the rest of the world still gets manual rav4s and they have a 6speed.
http://www.pressroom.com.au/press_kit_d ... &kitID=334
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Re: RAV4 2.0 close ratio gearbox into GT4 ??

Postby underscore » Wed Sep 04, 2013 5:03 pm

6 speed you say? What are the gear ratios like compared to the RC/CS box?
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Re: RAV4 2.0 close ratio gearbox into GT4 ??

Postby CMS-GT4 » Wed Sep 04, 2013 5:49 pm

The ratios are in the link.
Gtfour ratios below. There is also a current camry 6speed. I have been curious if it could be mated to a rav4 or alltrac transfer.
viewtopic.php?t=24253
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Re: RAV4 2.0 close ratio gearbox into GT4 ??

Postby mixer72 » Sun Sep 06, 2015 5:39 pm

just fitted a rav4 box with 205 diff in my 400bhp gt4 so will see how I get on and how it works
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