Datsun r160 differential

By JMortensenSeptember 20, in Drivetrain. This question is extremely common and has no perfect answer, but this post is intended to relate what is typical amongst Hybrid Z'ers. A couple of basic points to start with:. What we tend to see most often is that the cross pin which holds the spider gears comes loose by breaking it's retaining pin.

When this happens the shaft can then move back and forth and will eventually wallow out the hole in the cast iron carrier.

This causes misalignment of the spider gears which makes the gears grind on each other and puts a lot of metal shavings in the oil. As the gears wear on each other and get looser the pin gets looser.

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Once that happens the pin works its way out of the carrier and starts beating the inside of the case. Sometimes the pin breaks in half, sometimes it just bends, but that's the end of the differential.

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This problem is pretty well known in drag raced, open, 2 pinion carriers. Welding the diff or switching to an LSD generally alleviates this problem.

R - Came in, Z automatic, and ZX automatic, among others. R - Nissan Comp diff used in early 70's race cars and R's. Still some of these floating around. The R, R, and R are straight bolt ins to any Z.

datsun r160 differential

The diffs are all the same length from the axle to the rear cover. None of these diffs require a different mustache bar. The R is only a 6. The open diffs are susceptible to spider gear damage due to spinning one tire. Still, guys have been putting this diff, especially the clutch LSD version out of mid to late 80s Subaru XT turbos, behind big motors for a long time with good results. The R is the standard diff in any Z.

The ring gear size is 7. One more pitfall here is the 2 pinion LSD. The 4 pinion LSD is much more stout and the 2 pinion should be avoided if possible.Please email: sales zcardepot. Shop By Category. Front Brakes. Rear Brakes. Master Cylinder. Wheel Related. Drive Shaft. Ignition Switch. LS V8 Swap. Sending Units. Engine Rebuild. Cylinder Head. Sheet Metal. Rubber Grommets. Fuel Injection. Fuel Tank. Fuel Sending Units. Fuel Pump. Stainless Fuel Lines. Dashboard Parts. Floor Mats.

Carpet Sets. Pedal Pads. Door Parts. Interior Panels. Body Kits.Datsun used several different sized differentials in their independent-rear-suspensioned sports cars. The diff name refers to the size of the ring gear in millimeters, ie the R has a mm ring gear.

datsun r160 differential

The larger ring gear in the R allows it to handle higher torque motors before destroying itself, but the R can still stand up to some pretty surprisingly powerful motors. The R and early R use the same inner bolt-in stub axles properly known as the side flange. But since the R has a narrower case, it needs to use a longer dust cap. Left — R, Right — R Problem solved. Does the 4. How much does it help? It will increase acceleration across every gear since you are changing your final gear ratio, not your transmission gear ratios.

You will experience a higher engine speed for a given road speed, for example if you were doing rpm at 50 mph in 4th gear, you now will be doing x 1. Sounds like a nice motor, and with the ZX 0. Thank you troy, very well said. John at SF Differntial shimmed it up for me to get the correct gear contact pattern.

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I removed my spare unit which is a welded 4. The pictue below shows the difference between the two. I have my CV joint adapters in place on the R while the R is wearing stubaxles. More info here […]. Find it Here.Quick links. Perrin R diff cover Engine, Transmission and related drivetrain. So my question for you folks is- has the r case changed at all over the last 20 years? Or is the application only limited because of vehicle and clearance issues? I don't have a link, but it can be seen at www.

What does the V8 weigh? You do not have the required permissions to view the files attached to this post. Accessorize your new differential with a Perrin large-capacity diff cover. Because when you spend a silly amount of money on a silly, trivial thing that will help you not one jot, you are demonstrating that you have a soul and a heart and that you are the sort of person who has no time for Which?

So if you can lay your hands on one, I'd definitely scoop it up. If it doesn't work out, you can always unload it on the Subaru guys. It's a local subaru guy, very common in my neck of the woods. He wants close to list price but that makes sense now, I'll grab it tomorrow!

Great fit but two things you need to do, well I had to mine. The drain plugs threads on mine didn't allow for more than a few turns of the plug which was unacceptable so I took it to work and tapped it a bit deeper. The vent tune you'll want to tap for a NPT and attach a nipple then run a flexable tube up high otherwise oil from the ring gear will send some lube up out of the stock vent tube. The OEM cover has some strategic baffling that helps prevent vent tube spitting, the Perrin does not, so use a catch can if you do track days.

Also, the side drain will not really drain all the old fluid unless you jack up the L side of the car while you drain, and the plugs get in the way of the cover mounting bolts. This preserves pinion bearing pre-load. Diff side plate bolt torque spec is 7. Rear cover bolt torque spec is 32 lb-ft 22 lb-ft for Non-STi and Perrin recs this tq with their finned covers. Since I did that, the whole area that used to get covered in diff oil mist stays clean as a whistle.

I ran the line up into my trunk, and have the catch can there. Can't see it from behind the car.It is an Independent Rear Suspension IRS setup, and strong enough to handle output from 2 liter engines, even turbocharged ones.

Early Subarus and Rs are bolt-in replacements for each other. The ready availability of this system in wrecking yards Subaru and the Datsun-ness of it all makes it an intriguing swap possibility.

The rear assembly track width only 1-inch wider than a Datsun rear axle assembly, so perhaps it is possible without narrowing. Hitachi makes these differentials. While Hitachi is a Nissan-associated company, Nissan and Fuji have been partners over the years and share some of the same parts.

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Even to the extent that many Datsun s were made in the Fuji factory per Cusumano's book. Album click to view. Datsun model series of the Bluebird family is the source of inexpensive IRS donors. It uses the common Hitachi R differential as used by the ubiquitous Subarus. The newer B has similar suspension but is a bit wider so less appropriate for a Album click to view Album click to view. Album click to view Post click for topic Post click for topic Post click for topic.

Club member pigdog explored fitting B IRS to his ute, although eventually he abandoned this idea and fitted a shortened Borg Warner Differential live axle and 4-link suspension.

Album click to view Album click to view Album click to view. Can the 2-inch wider difference be mitigated by using highly-positive offset FWD-style wheels on the back? The difference from the calculated amount above is that the tire sidewalls stick out further than the tire tread. Drum-to-drum measurement outside of drum of the stock B H assembly can be calculated at Starting in a wholesale switch was made to viscous-coupling LSD. Unforuntately the newer units have different stub axles so they are no longer a straight bolt-in for the Datsun diff unless you include new axles.

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datsun r160 differential

Username: Password: Lost Password? Register now! Advanced Search. Edit this page Discuss this page Page history What links here Related changes This page has been accessed 24, times.Quick links. The model and year of car and ratios. Because when you spend a silly amount of money on a silly, trivial thing that will help you not one jot, you are demonstrating that you have a soul and a heart and that you are the sort of person who has no time for Which?

Most folks feel the VLSDs aren't worth the trouble, and don't have the performance advantage of the clutch-pack units. However after seeing CJR, the guy with the vgT red thats in the classifed run 12's with an R it made me want to do some more research. Everyone says the R is weaker, but damn I dont want near as much power as he seems to be running, and I dont plan on dumping the cluth like an idiot.

Love people and use things, because the opposite never works. His is a "clutch" pack R So the had the VLSD? I don't like how they act like an open diff when one wheel is in the air or on icerequiring you to left foot brake to get it to lock up again.

Dave Lum had one under his TT beast and I had one under my vg30et with rwtq. Neither of use broke them. Mine was getting noisy when I pulled it. Still waiting for someone to correct me on this. L series only have one header! D21 4wd front r stubs are also 27T, but won't work. I tried.

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Older Rs and Rs use 25T diff stubs for those that are wondering why the big deal looking for 27T stubs. I'm in the middle if my srdet swap and want to upgrade my rear since the car is going I be down for a bit and this is the time to do it. From what I've been researching, it sounds like the clsd is an easier swap, I just would love a list if possible cars it came out of? I know the older subys had them but which ones?

Hopefully 3. Any insight would be great? Fortunately there are solutions to this problem. They usually sell in the dollar range. What does the V8 weigh?This question is extremely common and has no perfect answer, but this post is intended to relate what is typical amongst Hybrid Z'ers. A couple of basic points to start with:.

When you spin one tire in your car because you don't have a limited slip, the side and pinion gears inside the carrier, aka spider gears, are moving really fast to allow that one wheel peel to happen.

What we tend to see most often is that the cross pin which holds the spider gears comes loose by breaking it's retaining pin. When this happens the shaft can then move back and forth and will eventually wallow out the hole in the cast iron carrier. This causes misalignment of the spider gears which makes the gears grind on each other and puts a lot of metal shavings in the oil.

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As the gears wear on each other and get looser the pin gets looser. Once that happens the pin works its way out of the carrier and starts beating the inside of the case. Sometimes the pin breaks in half, sometimes it just bends, but that's the end of the differential. This problem is pretty well known in drag raced, open, 2 pinion carriers. Welding the diff or switching to an LSD generally alleviates this problem.

R - Came in, Z automatic, and ZX automatic, among others. R - Nissan Comp diff used in early 70's race cars and R's. Still some of these floating around. The R, R, and R are straight bolt ins to any Z. The diffs are all the same length from the axle to the rear cover. None of these diffs require a different mustache bar. The R is only a 6. The open diffs are susceptible to spider gear damage due to spinning one tire.

Still, guys have been putting this diff, especially the clutch LSD version out of mid to late 80s Subaru XT turbos, behind big motors for a long time with good results.

The R is the standard diff in any Z. The ring gear size is 7.


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