North American Turbocoupe Organization



5 lug rear disc swap .......the easy way!!!
scout Offline
Junior Member
#1
Ok I have been trying to figure out a way to swap to 5 lug rear disc, Without special brackets or a total rearend swap. I have been to the bobbit write up on Lincoln and Cadillac components,great info, but could it be easier.

This is what I did and it lets you keep your stock track width!

1.The TC rear and a SN95 rear are the same width, so use any v6 or v8 axles from a 94-95 Mustang. 96-98 I think are the same also.???

2.Go to your partstore of choice and ask for a set of front rotors from a 1990 Mazda MPV minivan with a v6 engine NON 4WD.

3.Ok the original TC 4 lug rotors have a 2-5/16" offset. The new Mazda rotors are 5 lug with a rotor offset of 2-7/16" offset. Now you can machine 1/8" wheel spacers to put between the axle and the rotor. This moves the new Mazda rotor back into center alignment with the caliper.

OR....

Just get some 1/8" washers and put behind the new mazda rotor and you have the same result for a lot less money.This is the easiest way I have found to swap over to 5 lug rear disc and keep the original housing with no special brackets.
88 turbocoupe t3, ranger roller, 4.10gears and lots of fun.
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ratrapp Offline
Member
#2
do not put washers behind the rotors.when you tighten down the rotor once or twice it will warp the rotor center.i had a truck in my shop a few months ago(f-350)that someone had been putting the wrong rotors on and had been shimming the rotors with washers.it would warp out in a few weeks.i put the right rotors on and no more problems.the wheel spacers would be better if you have a long enough axle flange to support the rotor and spacer.
88 turbo coupe ported e6 kirban afpr forge bpv walbro 255lph stinger3" dp into 2 1/2 duals ultra flows bobs gutted upper with 60mm tb ranger roller cam.t-3 race engineering cam pulley gillis vale k&n cone 3.73s centerforce d/f 140 motorsports speedo and fms rear spoiler 17x9 cobras
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darkthunder Offline
Senior Member
#3
Are those Mazda rotors vented or solid? What is their overall diameter? And yes 94-98 SN-95 axles are the same length.

Do you have any pics?

This sounds like a great alternative to retaining the factory rear brake setup and converting to 5-Lug. Nice info.
darkthunder - 85 TC// 302/C4
2009 Subaru WRX//daily driver
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BJL Offline
Moderator
#4
the Mazda rotors are vented as they are for the front of the Mazda.
it soudns easy as long as you can find a spacer that fits inside the rotor and all
Brian J Larkin
88TC 328,000 miles
T3, FMIC ,3in stinger exhaust, PimpXS ECC,gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug, Cobra 13in front brake. Vacuum assist brake conversion. 
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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scout Offline
Junior Member
#5
Just buy these and the washers aren't an issue.
http://www.maximummotorsports.com/store/...cts_id=576

Yes the Mazda rotors are vented.
This also allows you to keep the stock TC e-brake cables and brake lines.
88 turbocoupe t3, ranger roller, 4.10gears and lots of fun.
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motormenace Offline
Senior Member
#6
When are you crazy kids going to learn to use the 91-92 Mark VII rotors and axels? They bolt up.....oh, cause they're the 5 lug version of the 87-88 brakes.
86 turbo coupe (14.12 at 15 psi. sleeper) *gone*

...so you have a V8...isn't that cute...
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Pete D Offline
Administrator
#7
Scout, check your PMs
Pete Dunham


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scout Offline
Junior Member
#8
Thanks. Pete I have changed my email to [email protected] This is my priority email.
88 turbocoupe t3, ranger roller, 4.10gears and lots of fun.
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84TBirdTurbo42 Offline
Senior Member
#9
what about 7.5 rear ends? or does the 87-88 have 7.5s to?
Chris Perry
1984 Ford Thunderbird Turbo Coupe. Dead, NY rot killed her
1986 Thunderbird shell, swapping parts from the 84.
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Joe F Offline
Posting Freak
#10
87's & 88's have 8.8 rears.
JR's Place - My '87 Turbocoupe
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