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I run Red Line fully synthetic all thru mine, diffs, transfer and gearbox, engine gets mobil 1, 10w 30, its supozd to be the ducks guts, and very light, meaning, (written, but no dyno figuers to prove it) less drag, and therefore more power to the wheels.
I like what you have done, very much, just the oil thing sort of holds me back, but then, obviously you have dun this, and it works well, so the proof of the pudin is in the eatin hey.
How long have you been running this set up.
I am seriously thinking of going for a full rebuild, 1.6ltr with lower gears, and beefing up the drive train, clutch, prop shafts, uni joints, cv etc, this sounds like the go.
What is the width diffence between a vitara and a sierra.
I use redline heavy shockproof in anyhting that matters. 90W in anything that doesn't - IE I don't care about my rear diff ATM as it's temporary, so it has 90W in it, gearbox, transfer and front diff have redline.
We've run some shaved diffs in things before, really, the amount of oil in the diff has two functions- to hold any wear particles in suspension, and to control heat by transfering it into the housing.
The wear particle issue can be fixed by more frequent changes. Heat might become an issue, but this stuff is rarely going to be heavily loaded, doesn't have a lot of HP going though it, and won't ever be driving very far, so it should be all fine. i.e I'm sure it won't get any hotter with a 1200kg sierra on it than with a 1600kg laden V6 vitara towing a caravan on a 40 degree day.
I'ts always a compromise though, but there's no substitute for ground clearance.
With this shave, we have the same ground clearance as with a sierra diff, but a significantly larger and stronger ring and pinion.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
The only issue I have is getting pinned up, when going over very tight stuff, and having the chasy grounded, and 4 wheels freely spinning, dam but thatsux.
its simply means driver skill, go harder.
I thought you were running a modified rear diff, forgive me if im wrong, but if so, with the amount of work you have put into the bugger, why the standard oil.
What is the wear issue you are talking about.
As far as I know, oil in the diff (s) has two functions, oil the bugger, and keep it cool, so the lessened oil reservoir may compromise your play.
maybe.
Im not contesting you, Im wanting to find out, simple.
Wear cannot be fixed by oil changes, all that can do is lessen the speed of destruction.
No, my rear diff is a widetrack housing with 5.12 gears and a trail tough spool in it.
The spool won't care what oil is in the diff, and that's the only bit I'm really going to keep, so I can't see the point in putting $30 worth of oil in the back diff that's temporary and has to last me 2000km a year tops.
Oil prevents friction - so long as there is enough to coat all the working surfaces, that will do the trick to prevent excessive friction and keep the bits of metal worn off the bearings and gear moving around (hopefully so they find the magnetic drain plug eventually). It's all only splash lubricated, and this is still a low pinion diff so it doesn't need any tricks to throw oil at the pinion bearings. The level will be plenty high enough to keep everything wet.
All diffs absorb power to turn and they turn that into heat (even when in oil). The oil acts as a transfer medium to allow that heat to be passed into the axlehousing and then into the air. We're going to have plenty of oil in there do that.
You'll notice in the silver diff we've put the fill plug up really high. We're not going to fill to that level - we're going to put about 1.5 litres of oil in the diff. That's about what a sierra rear diff has in it stock, and should be plenty. Note that Spider 9's (and most fabricated housings) actually have the fill point at the top of the diff, not at the fill level. You fill by amount, not by level. Based on what suzuki thought was appropriate for the 1.3 diff, I reckon 1.5 litres will be fine. YThe shaved vitara diff that is in service has about 1.8 litres in it, but it's not shaved this hard.
I'm really not aware of any diff failures caused by reduced capacity due to shaving. A diff would have to get VERY hot to cause it , or the oil, any problems.
Steve.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
Remove a couple of 3rd member bolts and the oil will fall out eventually.
on the vitara rear we had to retain the drain plug as the 3rd member bolts are actually studs so it won't work.
Steve.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
for working it all out
