Datsun Roadster Forum-311s.org

hi all
i'm not a datsun collector but i am looking for some technical info on a roadster diff. what ratio's, LSD's and also the measurements of the mounting points. pic's would be great

the reason i ask is that i have been told by 2 different sources that these diff's bolt into my car with out any major mods and have a better ratio

pls don't get upset that my car is a Mitsubishi but it is a rare one......
1970 Colt 11SS





MATT

Hi back Matt!
Where are you located?
The dimensions and ratios may be suitable but I don't like your chances of actually sourcing a Roadster rear end
I can do some measuring for you if you wish, my chassis is like this: -

What about an early Escort or Cortina?

Anyhoo, here is a site with all the Technical data for the full range of Fairlady Sports cars: -
http://tinyurl.com/5go9ty

i'm in Canberra.

i was just looking at the site and there are whole cars going for reasonable prices so i thought someone might have a cheap diff.
i haven't seen many here but there are a few still getting around and i didn't think i would find a rear end in Oz.

the main reason for these diff's is the mount points to the springs are the same and they have bigger drums.

thanks for the pic

MATT

And unless you have a lot of cash burning a hole in your pocket, forget about LSD's for the roadster. Very expensive. There are a couple people here trying to fit a 84/85 RX7 GSL rear end for the LSD in them. (and disc brakes)

Mark (wagonman)

datsunrides wrote:And unless you have a lot of cash burning a hole in your pocket, forget about LSD's for the roadster.

Mark (wagonman)

no i have a yellow money box*

MATT
*see pic above

A different approach might be a roadster housing with a ford 8" differential (a common racing upgrade). This would give you limitless options for gearing, a much less expensive LSD or locker solutions, larger brakes and a housing that will fit your car.

There are down sides to roadster third members, the axles on a roadster are stout but the mounting system for them leaves a lot to be desired.

Best,

R

I've got a whole rear end from a 1500 64 roadster if thats any help??

Matt.
I too have a 1500 one in my car, which I plan on taking out soon, if you want a look.
Give us a call on 0407 251 141 after 7pm or on the weekend.
Craig.

The late model fairladys came with a H190 diff (bigger then the early models) This gives a lot more options.

The S3 Bluebird, S12 and 720s had H190s and there are a lot floating around. So you can get ratios from 3.6 through to 5.5.

This site is great for datsun stuff:
http://ozdat.com/ozdatonline/

Also this guy was selling a H190 detroit locker on ebay, I think it was around $550. He may have info for you.
http://ozdat.com/forum/memberlist.php?m ... ile&u=4801

Also you can have an LSD made:
http://datsun1200.com/modules/newbb/vie ... at&order=0
note: at the top under H190, Sidedraught

When I last spoke to Lou Mondello (Melbourne) he had a 1600 10 bolt diff (PM me if you want his details)

Plus, the local rally club often have useful stuff.
http://www.bmsc.com.au/

Food for thought,
Craig.

yeah ford diff will be to heavyand big, the car only weighs 700kg
cheers for the links

MATT