started fabbing up the front of the roll cage.

 

hi, how you doin.ok the purpose of the truck is for off road racing.box section was used because its gonna be clad in ally,so you wont see any of the front end and is easier to clad to a flat surface rather than a rounded surface.tyre size will be the pretty much standard 31x10.5x16.

 

well i have learned something new today
let me get this clear you fliped the axles upside down correct
so it reversed the drive direction
am i wrong
what ever man that thing is great

 

awsome


subscibe

 

yep if you flip the axles over they drive in the opposite direction.only problem is that the front steering axle had to be cut at each end turned back round and re welded because of the castor and camber angles.if that makes sense.

 

Will there be any issues with lubrication throughout the differential since its upside down now?

 

no there shouldnt be because the diff is splash lubricated.so it wont matter what configuration the diff is fitted.

 

'Cept now the drain plug is up top. That ought'a be interesting...

 

tis true.so now the level plug becomes the drain and fill plug.i could always cut another plug into the bottom,at a later date.or i could use a pump to pump the hypoid oil out.

 

You keep mentioning running the axles upside down to reverse direction of rotation. Have you considered the oiling of the ring and pinion gears?? And are you running High (now low pinion) 3rd members? Or the stock low (now high pinion) differential?

Cool Idea! I'm looking forward to seeing the progression and completion of such an interesting Rig. I'm also sending the link my Dad, he always likes seeing new and different engineering.

Good Luck with it and keep us updated!
Grant

 

as said earlier in the thread,im running stock diffs,the axles are from a bj40.the diffs are splash lubricated so it shouldnt matter what way round i put them in,or should it?????if im climbing up the wrong tree then any advice or critisism welcomed.

 

I've never done an axle flip before, but I wouldn't think it will matter, either. Like you said, they're splash lubed. The gear oil is designed to cling and climb upwards to the top most gears in the assembly. Besides, it looks like the lube level (with respect to the pinion location) won't be much different with the fill/level plug upside down. Kinda hard to tell exactly from the pics, though.

On the other hand, going by capacity specs, you could leave the fill/level plug in the diff and fill from up top.....the "former" drain plug. That way there'd be no guessing.....you'd have the proper amount of lube in the carrier period.

I would tap a drain into the bottom. That way should you're diffs ever get water logged you can absolutely get it all out. Might consider how the axle flip will affect the breather, as well.

 

For a top on the rear you ought to construct something similar to the 1st gen 4runner's hard top. Doesn't need to be a squarish, just made of light sheetmetal or something, and sloped on the back to about 1/2 the size it is on the front. Paint the "windows" on. I think that would look pretty sweet.

 

hi thook,yea i have to agree with you there mate,i think i will drill and tap the bottom of the axle and fit a drain plug.

 

thats already been sorted,its gona have a thin walled box section construction with ally plating.with a flip up back on gas struts,a bit like the baja trucks.but that will prpably change as it comes to construct the back end.as thing do.

 

Sorry, didn't mean to ask that question abou lubrication again. I hadn't seen the other posts yet.
But on those lines. My Dad simply tilted an axle up about 5-10 degrees and burned out the pinion bearings. Oops.
My suggestion for the oiling would be use a remote reservior and cooler for the diff oil and add a small pump to the housing. That'll keep you lubed and running.

Also on the breather/drain issue. You have a breather that's now at the bottom, plug that and it can be your "drain." and use the original drainhole on top for the filling (like you mentioned) but it can also have a fitting threaded in for the breather. Just a thought.

Can't wait to see it completed!! Good luck!

 

Those are great ideas, Grant. Pinion angle is something I'd not thought of...though, I should've because a know a fellow who blew the rear pinion in his Chevy merely because he'd put the lift blocks on backwards. The blocks slope in a particular direction....you see. (Atleast, this what I was told was the reason. Hell....I don't know. Seems plausible, though)

 

That'll Do It!

Sorry, Not trying to hi-jack your thread. Back on Topic now. Have you made anymore progress with this sweet Hilux?

 

hey no worries,you should visit the english site if you wanna see hijacked threads,we re all nuts over here......... anyways yea a bit more progress has been made,starting to plumb up all the brake lines, power steering lines and fuel lines.also fitted a cab heater.the roll cage is nearing completion too.

 

jumpin here ..

awesome build I must say .. but you will have to figure a "specific" oiling system for the pinion bearings as mentioned .. upsidedown , they will be starved of oil lubrication , and burn up .