help me I.D. this rear end

BK_CAULEY · Mar 3, 2007

ok guys here is a quick run down on the problem i am having. i bought a 1990 coupe and need help figuring out what kind of rear end it has for a few reasons.
reason one-has a cracked caliper and i need to order a new one.
reason two- i want it to be a five lug.

the rear end has no I.D. tags on it or no numbers on it anywhere. whats weird is at first i thought it was a turbo coupe or similar rear end until i pulled the cap on it and its a damn 4 lug. and i have never heard of a 4 lug rear disk brakes factory car before so if someone can elp me figure it out pease do. looking at it from the backside it looks just like my 89 gt's 8.8 but once again its a disk brake four lug. am i going to be able to upgrade the rear end to a 5 lug and still keep the disk brakes? what axles can i use to do it cause thats all i really need.

Deece · Mar 3, 2007

Turbo coupes were 4 lug. Measure the distance between the axles, measure the size of the rotors as well little bit of research and you should be able to figure it out also what gears are in it.

Also if it is a T-coupe rear you won't be able to find rotors that are five lug with the right hat height. Do a search for member PIMTOUT he had a post about 1 yr ago about drilling out 4 lug rotors for five lug.

jrichker · Mar 3, 2007

Deece said:
Turbo coupes were 4 lug. Measure the distance between the axles, measure the size of the rotors as well little bit of research and you should be able to figure it out also what gears are in it.

Also if it is a T-coupe rear you won't be able to find rotors that are five lug with the right hat height. Do a search for member PIMTOUT he had a post about 1 yr ago about drilling out 4 lug rotors for five lug.

The Turbo Coupe axles came with 4 lugs, 10" vented disk brakes and a 3.55 or 3.73 limited slip differential.

Five lug Turbo Coupe conversion:
Use the 94-95 Mustang axles . Use 1990 Mazada MPV 3.0 V6 front rotors (10", 5 lugx 4.5" pattern,
2 7/16" offset ). While you are at the auto parts store, set a TC rear rotor side by side with the Mazada
rotor and they are the same except for the offset.

The next step fixes the offset problem:
Use a Maximum MotorSports 1/8 spacer (MMWS6, http://www.maximummotorsports.com/i...roduct_info&manufacturers_id=&products_id=576 )
between the inside of the rotor and the axle flange. The spacers may need to have the OD machined to fit
properly. The stock rotor offset is 2 5/16" and the Mazada rotors are 2 7/16" offset. The 1/8" spacer
puts the rotor back dead center alignment with the calipers.

Deece · Mar 3, 2007

The all knowing orb has spoken I wish I knew about the mpv rotors before I sold my other Turbo coupe rear

BK_CAULEY · Mar 4, 2007

seriously

electronics, rear ends....what does jrichker not know?? i wonder if he has ever condidered jeopordy thanks joe you just saved me a bunch of time and possibly the selling of my rear end.

BK_CAULEY · Apr 8, 2007

brought back from the dead

if i use the 94-95 rear axles that means i am gonna have the same rear wheel base as the 94+ and that in mind will fr500's still fit if i have stock height? and will they fit if i use steeda sport springs. i have seen a few notches on here with fr500's but not sure if they have the stock wheel base or if they are running stock springs. if not answers to this question can someone tell me who i can ask?

Mustang5L5 · Apr 8, 2007

BK_CAULEY said:
if i use the 94-95 rear axles that means i am gonna have the same rear wheel base as the 94+ and that in mind will fr500's still fit if i have stock height? and will they fit if i use steeda sport springs. i have seen a few notches on here with fr500's but not sure if they have the stock wheel base or if they are running stock springs. if not answers to this question can someone tell me who i can ask?

You already have the same width as the Sn95 cars. The TC rear disk setup increases the track 0.75" wider each side than the dtock fox drum setup. The 94-98 Sn95 setip is the exact same track as the TC.

If you want to run 9" or wider wheels, you'll need to pull the axles back in using one of the north race cars caliper bracket kits. I beleive there is one for t-bird brakes using stock-lenght axles

BK_CAULEY · Apr 9, 2007

i might look into that but can i run SN length axles and fr500's? and will i be able to lower the car any?

Mustang5L5 · Apr 9, 2007

9" wheels??

Prob not. It will be close to the fender lip and you'll prob rub the tire on the edge. Rolling the lips may help but more than likely you will need to draw them in using the bracket kit i mentioned above and run the stock fox offset

help me I.D. this rear end

BK_CAULEY

it's built for speed not longevity, woman

Deece

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BK_CAULEY

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