hello all
I m Keen mac and i race a 1984 Mazda RX-7 GLS se. run on a paved 1/4 mile short track. Ive put in a mazdatrix 1.3 carb motor w holly 650 4 bbl. strong enough but i m having hancling prob. looose in and out. I m thinking it s got a limited slip gear anf think the fld is bad/ burnt. Im hoping thi will give it some grip. what should i use for oil and how much.
will this help
thx
ken

 

adjustable end links, beefy sway bars, subframe supports, rear strut tower brace, and adjustable coil overs should do the trick. the more adjustment you can get out of it, the better. then, you can pre-load the suspension and predict what the car is going to do.

 

yes all great mods for cornering and launch but my rules are not alowing any of those items. i m realy looking for info and feedback an chg the rear end oil what to use? [viscus fld, gear oil?] and if in fact the 1984 RX-7 GLS se comes with a limited slip and not the reg rear end like the rest of the GEN 1 cars
thx anyway
let me know anyone

 

if yours came with disc brakes in the rear from the factory, it had a limited slip. first gen limited slip rears were clutch type. this means that gear oil is bad. you need lsd specific oil. I'm not 100% on what mazda used from the factory, but that would be my recommendation. other than that, there are plenty of lsd oils to choose from. a hayne's manual will tell you the weight you need. the second gen lsd's had it written on the case.

 

redline and amsoil are the most popular among first gen owners btw

 

so limited slip oil , not reg 90w gear oil with an additive , like i ve heard. a ltd slip specific oil sounds better anywho
what the hey nite get lucky
but if not i ll just put in a drum brake rear end, non LS , and weld up the spyder gears to lock it up.
rather get lucky

 

with a viscous type lsd, gear oil is fine. a clutch type lsd has more specific needs.

 

what type of lts is nime stock 84 w disc bks

 

it's clutch type limited slip.