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2stroker
Joined: Sun Sep 07, 2008 11:30 pm Posts: 2689 Location: North Brisbane
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 Posted: Sat Jun 26, 2010 12:42 am |
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How much diff oil volume do you loose, we drive for hours to and from. Never seen any one hung up on the diff centre..
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ajsr

az supporter
Joined: Sun Dec 28, 2008 10:30 pm Posts: 3712 Location: melb
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 Posted: Sat Jun 26, 2010 1:08 am |
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I spend a massive amount of time dragging diff centers and gouging 1/2 an inch of clay out of the track centers and thats on 34's. shaved diffs will be one of my next mods for sure.
The problem is no where near as bad on NT diffs as the vehicle doesn't drop right into the rut (usually  )
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alien
Joined: Wed Mar 24, 2010 10:30 pm Posts: 16343 Location: Perth
Vehicle: '92 Sierra, 1.6efi, SPOA, 31s.
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 Posted: Sat Jun 26, 2010 1:44 am |
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2stroker has an interesting point though - has anyone measured the extra heat in the diff center by not having as much oil in there? Is there any difference?
_________________ 
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2stroker
Joined: Sun Sep 07, 2008 11:30 pm Posts: 2689 Location: North Brisbane
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 Posted: Sat Jun 26, 2010 3:03 am |
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Yeah alien, if someone suggested that you run less oil in your diffs you would think they are crazy.
Tracks must be a lot different down south to be dragging diffs everywhere on 34's is bizzare large 4x4's would have to be on 37's to get the same diff clearance as a suzuki of 34's
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appsie
Joined: Sun Apr 20, 2008 11:30 pm Posts: 2225
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 Posted: Sat Jun 26, 2010 3:29 am |
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thanks steve yeah i did notice the double cardinal and thought this would of been your reason.Do you reckon much is gained rolling it round like that?
hurry up with the build pics 
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86slowsierra

az supporter
Joined: Fri Jul 25, 2008 11:30 pm Posts: 724 Location: Melbourne
Vehicle: nt sierra
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 Posted: Sat Jun 26, 2010 5:26 am |
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alien wrote: 2stroker has an interesting point though - has anyone measured the extra heat in the diff center by not having as much oil in there? Is there any difference?
there would be a heat differance, fo sho. Oil normaly removes/ has 40% trannsfered to it? would it be a dangerous amount of heat. probably. you could just put the factory amount of oil in through the breather.
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alex

az supporter
Joined: Sat Aug 16, 2008 11:30 pm Posts: 2151 Location: Brissy
Vehicle: Nissan
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 Posted: Sat Jun 26, 2010 5:31 am |
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86slowsierra wrote: alien wrote: 2stroker has an interesting point though - has anyone measured the extra heat in the diff center by not having as much oil in there? Is there any difference? there would be a heat differance, fo sho. Oil normaly removes/ has 40% trannsfered to it? would it be a dangerous amount of heat. probably. you could just put the factory amount of oil in through the breather.
then you would run the risk of seals leaking??
_________________ Pearce-toff Racing
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Red89
Joined: Tue Jan 12, 2010 10:30 pm Posts: 2801 Location: Perth
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 Posted: Sat Jun 26, 2010 6:57 am |
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BenT wrote: My shaved diffs give me 300mm on 32" Simex's. Same as Hilux on 35" Simex's
Just for reference, with 30 psi and 32 inch Simexs I have 270mm clearance at the pumpkin.
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Gwagensteve
Joined: Thu Feb 26, 2009 10:30 pm Posts: 13007 Location: Melbourne
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 Posted: Sat Jun 26, 2010 7:12 am |
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Who said anything about running less oil in the diffs? I lift the fill point and there's no significant reduction in oil capacity. I've highway cruised for a few hours on my rear. Sure it gets hot. I have no idea if it's hotter than an unshaved diff. The real issue is if it gets hot enough to burn up seals or burns the oil. There's no evidence that's the case for my diff.
2Stroker - too right the big cars need to be on 37's - we were out with a patrol running 37's the other day and he was struggling with clearance.
A track we were on a few months ago was just drivable with a patrol on 35-36's. We were there a couple of weeks ago and we were struggling to drive it with 35's on sierra diffs. Big cars would have no chance. They'd be pulling cable. Ajsr speaks the truth. It's all about diff clearance down here. I have no paint at all on the underside of my axles (not just the diff centre)
If you can't see the point, it's not the mod for you.
Steve.
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93zook
Joined: Wed May 27, 2009 11:30 pm Posts: 699 Location: perth
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 Posted: Sat Jun 26, 2010 8:20 am |
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thanks for the info guys, i will definately be looking at this with the new diffs.
cheers.
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