As u can see i'm a new bie so i'm askin what is the difference between a the regular (stock) rearend and the R200 i hear talked about.?

The R200 is a stronger rear end than the R180.

R200's came stock in later model Z's. I'm not sure

what year they started getting them but I am sure

it came stock in '78. I think the differance is the

ring gear diameter is larger on the R200 - making

it stronger.

*** If anyone has differant info then please

correct me. ***

- Jeff

180mm vs 200mm ring gear

2-pinion vs 4-pinion

Reasonably tough vs nearly unbreakable.

The R200 was introduced with the 260Z (1974). It was used (in the same housing) through to 1989 in various ratios & LSD types.

In the US the 300 Turbo's had an clutch-type LSD & the SE Turbo had a viscous LSD. You want the former (clutch type) + mounting hardware from a donor 260/280Z to suit.

You should find plenty of info on fitting an R200 via the search feature on this site, zdriver.com, hybridz.org & zhome.com.

You say that the R-200 started in 74 with the 260Z. Are you sure it was all 260Z's. ? I have heard they came out later than 74 but I really don't know. I have a 74 260Z and I haven't been able to tell yet what it is. How could I check while it's still in the car? I will be pulling it out for overhaul in a month or two but I would like to start lining up new parts some time soon.

Britt, Ben is talking about the Australian market, which got the 260 from 74-78, they never got the 280 starting in 75 like we did.

If I remember right, the 260's, even the FI 260's in the US had the R-180. The first year for the R-200 was in the 75 280Z. But, the 280 also got the R-180 in 77-78, so the 280's had either/or, not just one rear diff during its model run, it depends on the year and model.

The 'accepted' diff installation was 260Z manual coupes had the R200 along with all 2+2's. But I've seen auto's with & manuals without, so who knows.

Brit,

The R180 uses alloy side plates for the output shafts, it is also noticeably taller than it is wide. Have a bit of a search & you should find photos' of each.

http://www.geocities.com/MotorCity/Garage/6212/diffswap/diffswap.htm

Thanks Mudge, that was the link I was searching for. Couldn't remember where I had seen it....:stupid:

Thank Google

I could probally reach up there with a magnet and see if it sticks to the side cover. That would tell me if it's a R-180 or R-200.

I have looked at many sites and links, on the differences in the r 180 and the r200. I am going to put an r200 in my 72 240z, the local junk yard has some 280's but the rearends are all still in them. is there an easy way to tell if it is a r200 while it is still in car? And whats the magnet trick? Thanks Again guys..

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