Diff Head Clearance Heights

[skid]

As the title eludes to, this is a place where you can put the diff head clearance height measurements in.

I'm not sure if its on here somewhere else, but its something I've been meaning to do for a while now, so I went to my lockup and measured the suzuki and then back at home I measured the 80.

What it basically will tell you is measurement from the bottom of the diff head to the nice level floor you are hopefully parked on.

I have been meaning to do this due to constantly reading about how a suzuki on 31s has more clearance than a safari on 35s, so heres my 2 vehicles and hopefully you guys can add plenty more.


Toyota 80 Series Landcruiser on 35/12.5R15 Mudstars @ 25psi 255mm

Suzuki 410 on 30/9.50R15 Kumho 834 @ 8psi 215mm


if you decide to add your vehicle to here, then please do it as above, with vehicle, size and type of tyre and the height measurement

cheers guys

SKID

p.s. the next time I have my 35" creepies on the 80 I will measure as well

[nismo26]

Could be an interesting thread, would be interested to see what a factory Safari has on 35" Kl71s

I have 277mm on newish 35" KL71 35psi with a diff shave, took about 25mm off.

[coxsy]

my saf on 34'' simexs 255mm front, 260mm rear, 36 psi. in garage

[KROOZA]

At 30psi , my project Cruiser is :



1979 FJ40 -> 37" Wranglers - 300mm front clearance
- 300mm rear clearance

[kbushnz]

KZJ78 Prado 1994 LWB
35 inch KL71's @ 40 psi
285mm front
270mm rear

[Jerry]

is it worth measuring the tyre height as well, eg i know my mudzilla's are not a true 33" measurement ....

[nstacey]

1985 Hilux on 31/10.5/15 GT Radial Savero MTs
220mm Front and 245mm rear.

[muddy]

GQ Safari LWB on 35x12.5x15 Kumho KL71's at 35psi (almost new)
Front 262mm Rear 267mm

[UBZ]

Suzuki LJ80 , 27" Tahs @ 15psi
front = 235mm . rear =230mm

[muddyhilux]

130 surf on 35 bfg A/T's 300 rear / 350 front
61 surf on 33 hankook muds 265 rear / 320 front

both measure on reasonably flat gravel driveway

[J_Dub]

Cherokee on brand new 31"at
Both ends 240mm

[CRAZYBUSTARD]

TJ Wrangler on 35 10.5 silverstones xtremes Front 280 at 12 psi
rear 260 at 10 psi

[DieselBoy]

Defender 110,

Tyre size: 235 85 16 (32.8" depending on rim width)

Pressure: 40 psi

Front clearance: 253mm

Rear clearance: 255mm

[niblik]

could be a handy thread but an issue i can foresee is the varying weight of vehicles, with add ons etc, which would ultimately effect the bagging of tyres therefore the diff height clearance...? may only be slight, but still...

in a nutshell, too many variables..?

mumbling over... as you were..

[wopass]

the diff height clearance in a nutshell

you may be onto something there bro... but that would depend on the nut and how thick the shell was...

[mike barnett]

safari kl71 35" 35 psi 10mm tread 277mm rear with a nismo shave done

[pruggerdore]

yep too many variables, but we get an indication.
yn67 single cab hilux tied down on trailer.
shaved diffs wearing 35/11.5/15 silverstones measure 33... with 10 psi in them at the moment even less.
285 back and front
guessing if I put 15 psi in tyres and cracked the tie downs she would be 300 easy

might do it again when I take it off trailer

[crazyclark31]

lwb safari 34psi 2/3worn 33in buckshots 225mm front 230mm rear

[00falcon]

Stock (for now) TJ Wrangler on 31's @ 32psi

Front 240mm
Rear 235mm

[Ben]

Suzuki SJ413 on 32x10.5 R15 Simex's at 32psi with shaved diffs:

305mm front & rear.

[tallsam66]

A more usefull measurement would be the distance from the centre of the axle to the bottom of the diff head housing...this way the height of different brand tyres etc is eliminated.

94 Surf KZN130-W (8inch diff)
Ground to centre of axle 375mm
Ground to bottom of diff head housing 240mm
(375-240=135)
Giving a distance of 135mm from centre of axle to bottom of diff housing.

If i decide to put on a bigger tyre i can now work out how much diff clearance i will have.

EG 850mm tyre ( 850mm /2 ) -135 mm = 290 mm clearance.

[drive it ...]

KZJ 78 Prado.
2/3 worn BFG 33x12.5R15. (measure 795mm) 30Psi. 250 F 245 R
Near new Simex JT2 33x10.5-15 (830mm) 38Psi. 270F 265R

[mr landrover]

96 pajero lwb

32cm front

26cm rear

on 2 month old weekend driven 31/10.5/15 pirelli mud scorpions

[Jafa]

85 Hilux, 39.5" Iroks (1005mm Dia)
Front @ 8 psi - 380mm
Rear @ 2-3 psi - 350mm

[Petemcc]

A more usefull measurement would be the distance from the centre of the axle to the bottom of the diff head housing...this way the height of different brand tyres etc is eliminated.

94 Surf KZN130-W (8inch diff)
Ground to centre of axle 375mm
Ground to bottom of diff head housing 240mm
(375-240=135)
Giving a distance of 135mm from centre of axle to bottom of diff housing.

If i decide to put on a bigger tyre i can now work out how much diff clearance i will have.

EG 850mm tyre ( 850mm /2 ) -135 mm = 290 mm clearance.

Not quite.... The distance from the ground to the bottom of the rim (and therefore the axle) will be different from the top of the tyre to the top of the rim/axle because of the bulge in the tyre at the bottom which is why different tyre psi changes the clearance. The bulge is not only dependent on the psi but also on the weight of the truck....

These measurements are interesting but very subjective.

[DieselBoy]

A more usefull measurement would be the distance from the centre of the axle to the bottom of the diff head housing...this way the height of different brand tyres etc is eliminated.

94 Surf KZN130-W (8inch diff)
Ground to centre of axle 375mm
Ground to bottom of diff head housing 240mm
(375-240=135)
Giving a distance of 135mm from centre of axle to bottom of diff housing.

If i decide to put on a bigger tyre i can now work out how much diff clearance i will have.

EG 850mm tyre ( 850mm /2 ) -135 mm = 290 mm clearance.

Not quite.... The distance from the ground to the bottom of the rim (and therefore the axle) will be different from the top of the tyre to the top of the rim/axle because of the bulge in the tyre at the bottom which is why different tyre psi changes the clearance. The bulge is not only dependent on the psi but also on the weight of the truck....

These measurements are interesting but very subjective.

........but also what ultimately counts when your offroad.

It's that precious clearance between the ground and the diff head that counts. Especially in ruts.

I have found reading the thread interesting, as I now know that if I am following some one in a safari on 35's at 15psi, if I leave mine up at 25/30 psi I should have about the same if not more clearance

[LOLYF]

my hilux on 35" silverstones:
270mm front
300mm rear
havn't checked pressures, looks pathetic compared to a mates new project truck it's got 483mm

Yes that is a 1.5 liter bottle under the diff head


Sorry about the fuzzy photo, I'll try and get some better ones tomorrow when i'm at his place.

[Mudhog]

my hilux on 35" silverstones:
270mm front
300mm rear
havn't checked pressures, looks pathetic compared to a mates new project truck it's got 483mm

Yes that is a 1.5 liter bottle under the diff head


Sorry about the fuzzy photo, I'll try and get some better ones tomorrow when i'm at his place.

I'm thinking that looks like Portals

[LOLYF]

I'm thinking that looks like Portals

Yep, with 40" sticky treps
Don't think he'll have diff clearance problems

[Mudhog]

I'm thinking that looks like Portals

Yep, with 40" sticky treps
Don't think he'll have diff clearance problems

He's going to need longer legs to be able to get into it