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Datsun rear axle widths, B-310 and others


datsunfreak

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I thought someone had a weird measurement because i measured mine about 20 times and wrote it in permanent marker on my tool box. cause when i was narrowing my toyota diff i wanted to make sure i came up a little narrower so i could get a bigger wheel n tire 

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For future reference (hoping the search engine can find this), here are the widths of every Datsun axle I have at the shop. All measurements are wheel mounting face to wheel mounting face, the only number that matters. B)

 

1200 51.50"

 

B210 51.75"

 

B310 (210) 53.25"

 

510 Wagon 53.5"

 

S110 200SX 55.25"

 

710 55"

 

2000 Roadster 47.5"

 

 

 

 

 

TREAD WIDTH this is NOT WMS to WMS and more a function of rim offset.

 

L520/L521/PL521...... 49.9" H-190

PL620/HL620............. 50.4... 50.8 after Mar '73 H-190

720............................. 50.8 and 53.1 after Nov '82 H-190

2000 Roadster........... 47.2  H-190

1200........................... 49"  H-145?

B-210......................... 49" H-145... 49.02" '74 on H-150

B-310........................  51.2"  H-150

PL510 wagon............ 49.6"  H-190

610 wagon................. 52.4"  H-190 with L20B

710 wagon................. 52.3"  H-165

A10 wagon................. 52.4"  H-165

810 wagon................. 53.1"  H-190

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TREAD WIDTH this is NOT WMS to WMS and more a function of rim offset.

 

L520/L521/PL521...... 49.9" H-190

PL620/HL620............. 50.4... 50.8 after Mar '73 H-190

720............................. 50.8 and 53.1 after Nov '82 H-190

2000 Roadster........... 47.2  H-190

1200........................... 49"  H-145?

B-210......................... 49" H-145... 49.02" '74 on H-150

B-310........................  51.2"  H-150

PL510 wagon............ 49.6"  H-190

610 wagon................. 52.4"  H-190 with L20B

710 wagon................. 52.3"  H-165

A10 wagon................. 52.4"  H-165

810 wagon................. 53.1"  H-190[/quote

 

 

If these are WMS to WMS some of these numbers are WAY off!

 

I dunno what year trucks but later model 720 is 57 1/2 the 521 i measured was 52 9/16 wms to wms

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Says right there...

 

 

TREAD WIDTH this is NOT WMS to WMS and more a function of rim offset.
 
L520/L521/PL521...... 49.9" H-190
PL620/HL620............. 50.4... 50.8 after Mar '73 H-190
720............................. 50.8 and 53.1 after Nov '82 H-190
2000 Roadster........... 47.2  H-190
1200........................... 49"  H-145?
B-210......................... 49" H-145... 49.02" '74 on H-150
B-310........................  51.2"  H-150
PL510 wagon............ 49.6"  H-190
610 wagon................. 52.4"  H-190 with L20B
710 wagon................. 52.3"  H-165
A10 wagon................. 52.4"  H-165
810 wagon................. 53.1"  H-190

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  • 4 months later...
  • 4 weeks later...

DF, add these widths to your list in the first post.

 

I've been thinking about what's next and wouldn't you know, more power comes to mind?

 

I called my friend that build the RX7 LSD rear end in my 510 wagon to see what he thought about doing another one for the 620.

 

In the process, I measured the width of the early and late 620 rear ends.

 

The early (up to 77?) rear end measures about 53 1/2" drum to drum

 

large.5897ccb6cb9c3_01102017early620axle

 

Sorry for the bad picture, it is still in Jeff's truck.

 

And the later 78/79 rear end measures approximately 54 1/2"

 

large.5897ccb0e2056_78-79620rearaxleasse

 

large.5897cca1cef2c_78-79620rearaxleasse

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As I have a 23 spline Roadster/510 wagon H190 on my car, I went out to the garage and did a quick rough measurement; drum to is just shy of 1300mm...........take it for whatever it's worth. Over the weekend I'll likely be able to get a more accurate measurement.

 

Tom

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Tom, while the Roadster and 510 wagon h190s share the same 23 spline pattern, the axle housings are considerably different in width. Do you know which one you have, as 1300mm (51.2") is too wide for a Roadster and a bit narrower than a 510 wagon. Perhaps yours is a narrowed 510 wagon rearend. What car are you running that rearend in?

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Troy it's in my 1200, it's tough to get an accurate measurement with the wheels on the car, it could be as wide as 52. It was on a 1200 project car that I bought specifically to get a stronger diff. I ran the H145 but when I replaced the A12 with the A15 that's in the car now I obviously needed a bigger diff, the H190 was the first thing that came along. A H165 would have worked fine and saved a few pounds. The H190 housing appears to be stock.

 

Tom

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Troy it's in my 1200... I ran the H145 but when I replaced the A12 with the A15 that's in the car now I obviously needed a bigger diff, the H190 was the first thing that came along. 

 

If you can find one, a B210 diff (H150 I think) will stand up to any A-series (that's not boosted). It's a straight bolt-in, and it is only 1/2" wider than the 1200 diff. 

 

Also the weight difference is negligible.  :thumbup:

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There is no going back; the H190 is 3" wider than the H145, the front track on my car has been widened to match (the front is actually slightly wider). As for the weight the H145 LSD used a steel carrier and stock drums, the H190 LSD is an aluminum carrier, the drums are alloy as well so the whole assembly only weighs 2lbs more than the H145.

 

The benefits of the wider track far outweigh any extra weight. The A-series cars are on a very narrow track. In the early 90s I still used the car for autocross and road racing, I actually put the car up on 2 wheels a couple of times. We actually lowered the motor and transmission 2" which tamed the Joey Chitwood episodes. A few years after that I went to the 280ZX coil overs and control arms which widened the front a little over an inch, that settled the car nicely.

 

I'd fit the widest axle I could and modify the front to match.

 

I'll get the actual measurement for my H190

 

Tom

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I'll get the actual measurement for my H190

 

Unless it's been narrowed (and I'd bet it hasn't) it's in the first post of this thread.   ;)

 

Based on my measurements the 510 wagon diff is 2" wider overall than a 1200. The Roadster H190 is 3" narrower than a 1200 axle. If your pumpkin housing is aluminum, it's from a 510 wagon. 

 

My 1200 sedan came with a 510 wagon diff in it with +25 wheels which fit almost exactly like a B210 diff with +0 wheels. 

 

I have both a 510 wagon axle and a B210 axle on the ground right now and the 510 feels substantially heavier to me. Might throw them on a scale for shits and giggles...

 

I could be wrong, it's happened once before...   ^_^

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So here is the deal on the weights; my H145 was all steel including the brake drums versus the H190 with alloy carrier and alloy brake drums. The alloy brake drums are only around 6lbs whereas the 1200 drums are something like 12-14lbs (I've got it written down but too lazy to look at the moment). Now if you had an alloy carrier and drums for a H145 I'd expect it to be upwards of 30lbs lighter.

 

Has for the 510 wagon rear end; in my coupe I had to massaged the rear fender lip, I think the Shelby Supercar wheels or zero offset, I also ended up going to very short tire 20.6 (Hoosier Street TD) in order to gain clearance. Using FWD offset wheels was an issue because the fins on th drums would foul the wheel. Note for racing purposes I need to run 13" wheels.

 

Tom

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So here is the deal on the weights; my H145 was all steel including the brake drums versus the H190 with alloy carrier and alloy brake drums. The alloy brake drums are only around 6lbs whereas the 1200 drums are something like 12-14lbs 

 

Yes, this is why yours is lighter than it should be. Drums make a huge difference in total weight on these.  :thumbup:

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  • 1 year later...

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