i was just wounder i have the fc86 na non lsd rear. if i want lsd does it just come down to the lsd unit it self just throwing it in the rear, or do you need to change it out for a differnt axel & set up

 

im pretty sure if you get it out of a non-t2 differential then it will bolt up.

 

The only na model with lsd in 1986 was the gxl, ( 5 lug, fully loaded, power everything model )


you would probably just want to swap the differential out

 

so i couldnt just get an after market lsd and throw it in

 

You could, you would have to find a company that makes diffs for the N/A ring/pinion. ATS makes one for $1350 LOL! Also, some axle/halfshaft swapping may have to take place. I'm sure a search would answer you questions fairly quickly. Just to throw a third idea in, why not buy a s4 clutch LSD and rebuild it? It would be cheaper considering most aftermarket LSDs (Cusco, ATS, Tomei) are in the $800-$1100 range, whereas a rebuild would place you somewhere in the $400-500 range (I think, it has been a while since I priced LSD rebuilds) + the price of the LSD, ($150). Check out www.mazdatrix.com they offer rebuild kits.

 

so it would just be easier to just geta full rear end?

 

i just checked out the site and damn i fell so um.... like its way over my head http://www.mazdatrix.com/g8.htm

just when you think i know a good bit of knowledge of cars something just totally messes up you ego

 

if i were you, I would get a n/a s4 LSD and give it a go. There is a chance it would still lock up decently. If not, rebuild it.
edit: why do you want LSD? Drag? Drift? AutoX?

 

drift so far i am getting pretty good i just would like power so i can drift to the left

 

you could always weld the diff, pretty ghetto though.

 

ok so what your saying just so i understand. i should just get a na s4 lsd which comes in (what car t2?) and just bolt it in. i was thinking the actually unit it self i was looking at the tomei. as for the the welding i am really trying to stay away from the honda getto way if you know what i mean. i am trying to make things clean as possable.

 

you cannot get any differential out of a turbo rx7 unless you swap the axels and pumpkin. If you want lsd you can pull one from a 86-88 GXL RX7. It is a clutch type differential. Or you could use the lsd from s5 N/A rearends as well. For drifting clutch type is better. Go Here for some more info. http://www.fc3spro.com/TECH/DRIFT/dori.html

 

yeah stay away from s5 for the drift, viscous LSD FTL
even better:
http://www.fc3spro.com/TECH/MODS/DT/lsd.htm

 

thanks for the sites i know how it works i just didnt know how to go about getting a lsd in my car

 

you can swap the complete rearend,subfrme and all in a couple of hours,i've done it a few times.even if you just wanted to swap the diff,you still have to pull the subframe with it as one unit.

 

damn looks like when i get my money saved up i will be calling you guys over to help me put it in

 

for a quick fix, just weld it up... i'm running a welded s5 gxl diff on my street car with a turbo engine/tranny setup.. as long as you aren't pushing a ton of power it'll hold up.. it's a bit ghetto, but a cheap solution... then you can start saving for a tII drivetrain, which you'll want to swap to eventually

 

subframe doesn't need to be dropped, just lowered slightly.