MY and L diffs ever crap out ?
- steptoe
- Master Member
- Posts: 11582
- Joined: Thu Oct 06, 2005 10:00 am
- Location: 14 miles outside Gotham City
MY and L diffs ever crap out ?
I ask as I have never had to replace a diff due to noise or oil leak, spy a diff in that corner of my shed, another in another corner as I cart in yet another and start to group them together. WTF am I doin' hoarding all these normal diffs I ask self ?
Remind self of another monkey on my back - a 3.9 ratio diff to suit my spare box, sitting out where I gave up on it - four or five years ago my pin punch (stamped SUBARU so can pick it out from its brothers) got jammed in the axle - never to come out - until today .
Three hose clamps and my EA81 lifter puller slide hammer, Lanotec, a few shifters - got the pin punch out, then a struggle to get the half length pin out.Looks like previous worker used a broken roll pin for emergency, the break was angld and kept off centreing my pin punches.
Rear diff axles are weird, needing 5mm ? to drive pin halway, then a mm less - 4mm to pop the pin right out of the DOJ hole. Must be intentional engineering to keep the pin instead of lose it.
Currently draining the black sludgey oil out, will need a new gasket and breather - anyone tried to a new breather plug for these diffs ? Option is to fit some brass adaptor and run a breather hose up high somewhere
Remind self of another monkey on my back - a 3.9 ratio diff to suit my spare box, sitting out where I gave up on it - four or five years ago my pin punch (stamped SUBARU so can pick it out from its brothers) got jammed in the axle - never to come out - until today .
Three hose clamps and my EA81 lifter puller slide hammer, Lanotec, a few shifters - got the pin punch out, then a struggle to get the half length pin out.Looks like previous worker used a broken roll pin for emergency, the break was angld and kept off centreing my pin punches.
Rear diff axles are weird, needing 5mm ? to drive pin halway, then a mm less - 4mm to pop the pin right out of the DOJ hole. Must be intentional engineering to keep the pin instead of lose it.
Currently draining the black sludgey oil out, will need a new gasket and breather - anyone tried to a new breather plug for these diffs ? Option is to fit some brass adaptor and run a breather hose up high somewhere
Only ones I've seen fail, as they go back to Datsun 1600 rally car days, were non correctly serviced one's. Fixed by adding 3 banana's.
Look after them and they last forever???
Serviced, they are very reliable.
The main time they are replaced is with different ratio gearbox changes, so they are still wanted.
MY 3.9 boxes and diffs are getting rarer.
3.7 diff's I have a pile of them.
New breather??, just pop one out of another similar diff.
Brass adapter and fed to a higher point, with a "U" bend, is the safest.
Remember that for your next deep creek crossing Jonno.
Look after them and they last forever???
Serviced, they are very reliable.
The main time they are replaced is with different ratio gearbox changes, so they are still wanted.
MY 3.9 boxes and diffs are getting rarer.
3.7 diff's I have a pile of them.
New breather??, just pop one out of another similar diff.
Brass adapter and fed to a higher point, with a "U" bend, is the safest.
Remember that for your next deep creek crossing Jonno.
L serious, still.
- Gannon
- Senior Member
- Posts: 4580
- Joined: Sat Nov 05, 2005 10:00 am
- Location: Bowraville, Mid Nth Coast, NSW
I busted a front CV joint so in desperation pulled the front shaft out and ran in 4wd as effectively rwd, after a week the diff was making whiney noises so I dropped the oil and it was silver.
Current rides: 2016 Mitsubishi Triton GLS & 2004 Forester X
Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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- RSR 555
- Elder Member
- Posts: 6951
- Joined: Sat Nov 10, 2007 10:42 am
- Location: ATM... stuck in Rockingham
I've seen a few crap out but this is due to lack of servicing. I too only hang on to them for different ratios when changing out gearboxes.
You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
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RSR Performance
Home of the 'MURTAYA' in Oz
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- El_Freddo
- Master Member
- Posts: 12519
- Joined: Tue Oct 04, 2005 10:00 am
- Location: Bridgewater Vic
- Contact:
Only need 800mL for the diff. I chuck in a little extra though.
I've used Penrite 80w-90 Mineral LSD oil, now I use something that's basically the same but they've apparently dropped the LSD specific type of oil or something... I use it in both my gearbox and rear diff, even though I don't have a clutch plated LSD.
Cheers
Bennie
I've used Penrite 80w-90 Mineral LSD oil, now I use something that's basically the same but they've apparently dropped the LSD specific type of oil or something... I use it in both my gearbox and rear diff, even though I don't have a clutch plated LSD.
Cheers
Bennie
- RSR 555
- Elder Member
- Posts: 6951
- Joined: Sat Nov 10, 2007 10:42 am
- Location: ATM... stuck in Rockingham
Need to check what type of diff you have (i.e. Open, VLSD, PLSD, etc..) to know what oil will be ideal. I use Motul oils for rear diffs, Motylgear 75/90 for open and FF-LSD for Plated and Viscous LSD diffs.
You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
[SIGPIC][/SIGPIC]
Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
[SIGPIC][/SIGPIC]
Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
- RSR 555
- Elder Member
- Posts: 6951
- Joined: Sat Nov 10, 2007 10:42 am
- Location: ATM... stuck in Rockingham
Who are you asking?
You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
[SIGPIC][/SIGPIC]
Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
[SIGPIC][/SIGPIC]
Disclaimer: Not my website but hyperlink here to Subaru workshop manuals