Outer Limits 4x4 Board

im based on the sunshine coast, qld, and just started a 12a rotary converson in an 87 sierra, have got to reseal the motor, but getting the conversion out of the way first. currently setting up my engine mounts, have oxyed the drivers chassis bracket off and setting up the crossmember attatchment. will keep everyone posted on off road capability, also pics available after ive completed it.

This will be a closely followed project by many .. I will be looking on very closely as well
I would really like to do something similar myself .. was looking at a swap like this using either a Zuk T/case and a C4 auto or a hilux box and transfer case ..

What gearbox are you using .. what other mods have you done/have planned ??

running a rx4 4speed, stronger gearset, was hoping box might be slightly shorter then 5sp but jack all difference. keeping porting minimal just running standard, cept recessing my bearings to prevent spinning at high revs. the sierra aint crazy, cig rear centre, 2.5in kingies, exdtend shackles,31 bf muds.still spu, but might go to hilux, not for a little while though. is about all, also making a front bar at moment, jsut to accomodate a winch.

yeh it sounds to be a good coversion after the initial root around, lot of those mad u.s fellas have don em, even after doing the injected 1600. reports are good.

i'm also keen to know how this goes

is the gearbox wide or fairly slim?
might as well go 5 speed you reckon? since length is not much longer?

thinking of doing the same with a nissan l28 tcase

http://rz-products.com/WAYNE/updates/updates.html
This guy was looking at a rotary but ended up with a Mitsu motor .. still some good pics etc in there .. I know of another with a 12a in it, will take a look and see if I can find the site.. he used the mazda engine and box ..

http://www.izook.com/tech/samurai/engin ... ngine2.htm

This is the other one I was thinking of ..

And the latest incarnation of Mazuki
http://www.izook.com/tech/projects/mazu ... intro2.htm

long wheelbase is easy. get a supra adapter plate - to rx4 b/housing then mount a lux g/box an t/case.

shortys are hard. i had a 12a rx7 auto and sierra t/case and if fit pretty tight. used a rx3 radiator.

by "fit really tight" do you mean a short rear driveshaft length?
or clearance issues elsewhere?

i looked at the auto, but no way its to fit in shorty, i saw a site on the net where some guy monstered the tunnel to fit it in, ended up being an abortion. it will sit extremely far forward, looking at a rear mounted radiator with twin thermos, if not. the only other problem is overall length. solved by moving back transfer, or just dealing with the vibration.

gricey wrote:i looked at the auto, but no way its to fit in shorty, i saw a site on the net where some guy monstered the tunnel to fit it in, ended up being an abortion. it will sit extremely far forward, looking at a rear mounted radiator with twin thermos, if not. the only other problem is overall length. solved by moving back transfer, or just dealing with the vibration.

Options....

1) use another Gearbox with integral transfer case (eg Landrover) and custom made adaptor plate. Vitara one would be no good due to gearing issues.

2) Wonder if the Mazda B Series and Asia/Kia Gearboxes fit either immediately or with a swapped bellhousing - after all these ARE Mazda engines nad Gearboxes....

3) Or doing it with a vitara or LWB

4) or Moving the rear axle back 4" or so...


You have options..... If you have money + options you end up with possibilities

my driveline is already sorted, thanks. keep you guys posted on progress.

Cool. You said you have these set up, but had issues with the box length...

My options were for others wishing to give it a go, as it's always good to have alternatives.

Let us know how it works out.