Hey, the diff in my 1600 is shagged. It is an r160 out of a 180bsss. I'm thinking it might be a good time to upgrade to an LSD. With the price and availability of Nissan lsd's I'm thinking about going the subi option. Are the subi r160 diff's any stronger then the old Nissan ones, or should I go to an r180? I know I need to make adapters for my half shafts.
I don't have huge power, just a worked l18 but the old diff didn't last overally long so stronger would be better.
Thanks

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Chris Thomas

1971 1600, mild L18, 5 speed

All I want is less to do, more time to do it and higher pay for not getting it done.

Im also interested in this issue as the R180 seem very hard to source and if so what LSD could be used if only a live axle is found?

diff inches max. torque capacity
H145 5.71 ~100 lb. ft.
H150 5.91 ~125 lb. ft.
H165 6.50 ~225 lb. ft.
H190 7.49 ~285 lb. ft.
R200 7.88 ~300 lb. ft.
Ford 8.00 ~325 lb. ft.
Ford 8.80 ~500 lb. ft.
Ford 9.00 ~600 lb. ft.

great information!
didnt know the H190 & R200 are smaller than a Hilux 8 incher!

So is a subi r160 LSD stronger then a datto open r160?

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Chris Thomas

1971 1600, mild L18, 5 speed

All I want is less to do, more time to do it and higher pay for not getting it done.

I wouldn't think so

Ever wonder why the Subi R-160 rear end drops into the Datsun? Made by Fuji Heavy Industries once part owned by Nissan and now partly by Subaru.

I run a std viscous r160 lsd in my legacy,aprox 300 flywheel hp and not a problem,highly doubt a 40 year old datsun r160 would take the same punishment....

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68 510 - soon to be restored into a replica 68sss
69 510 - current build - L20b turbo
91 GT turbo legacy
GET THAT DATSUN DIFFERENCE!

just thinking, i had a non lsd r160 in the suby at first,did 6 months before it was a howler...

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68 510 - soon to be restored into a replica 68sss
69 510 - current build - L20b turbo
91 GT turbo legacy
GET THAT DATSUN DIFFERENCE!

This is interesting information. How is it calculated?

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1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
viewtopic.php?t=6579
#SR20Datsun @SR20Datsun

Interesting!!!

so HXXX or RXXX is MM into INCHES

so the R160 is 160mm = 6.3 inches

Later R160 must be made of better metallurgy and quality forgings?
I suppose 40 years of building the same thing helps to improve it

Knew the conversion from mm to inches, but where do you get the torque ratings? How are they calculated?

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1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
viewtopic.php?t=6579
#SR20Datsun @SR20Datsun

That's what I was thinking, I just see no point swapping diff's when the new one is no stronger.
From what I can tell with my diff (it's still in the car) it has up and down play and in and out play on the left hand flange so I think it is probley a bush or thrust washer and probley the spider gears too, it goes clunk when I spin it over by hand.

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Chris Thomas

1971 1600, mild L18, 5 speed

All I want is less to do, more time to do it and higher pay for not getting it done.

I have another question about the diffs, I have read that the viscous diffs behave like an open diff after 50000 kms, can the LSD action be restored by replacing the diff oil with a quality oil or will it need rebuilding? Thanks

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Chris Thomas

1971 1600, mild L18, 5 speed

All I want is less to do, more time to do it and higher pay for not getting it done.

I`m not sure how it was caculated either??

Eg: In 1st gear a standard datsun A12 is putting about 175 Ft Lb through the diff, which is well above what the chart says the standard diff can handle??