Turbo-Coupe rearend swap

Topic: Turbo-Coupe rearend swap (Read 12221 times) previous topic - next topic

Turbo-Coupe rearend swap

Reply #15 – July 17, 2010, 12:56:38 AM

Ok, today I went ahead and picked up a MC for a Mustang SVO just to see. It looks as though it would bolt on, but the MC for the Cougar/T-bird has three brake lines coming out of it whereas the SVO MC only has two. If you can run the SVO MC, how do you run the lines?

Also, wouldn't a MC from the Turbo-coupe have the bigger brake piston as well over the standard Cougar?

Turbo-Coupe rearend swap

Reply #16 – July 17, 2010, 09:12:39 AM

Turbo coupes had a different master cyl. It was that abs all in one unit that the Mark 7 uses. I think there is a write up on the 3 into 2 for the SVO master cyl on a couple sites. I think Corral has one.

Turbo-Coupe rearend swap

Reply #17 – July 17, 2010, 12:59:04 PM

the 83-86 Tc had vac booster with normal MC the 87/88 TC had the ABS
My 85 TC had and has only 2 lines from the MC to the combo/prop valve

no the 83-86 TC ran the same MC as the rest of the birds, since it was front disc and rear drum some had 9 inch others had 10 inch drums

I also went to (and modified) the 87/88 TC combo/prop valve to use with the rear disc swap

I had to remove the switch that triggered the red brake light on the dash when fluid pressure is lost, so I could use that port for the other front brake.

Turbo-Coupe rearend swap

Reply #18 – July 17, 2010, 02:54:30 PM

Thanks Bogus! I saw the pressure switch on the TC prop. valve. I removed that and installed the plug from the Cougars instead. Is that where you ran your 3rd line?

I was looking at maximum motorsports website and saw the SVO MC adapter kit. Looks good and isn't expensive.

Also, the front calipers for the SVO measure at 73mm, do the '91 Mark VII calipers measure at 71mm? I know some of the guys have ran these fronts, but wasn't sure of the size.

http://www.maximummotorsports.com/store/index.php?main_page=product_info&cPath=49_140&products_id=672

Turbo-Coupe rearend swap

Reply #19 – July 19, 2010, 11:34:38 AM

yes , I have no idiot light switch in my combo valve now

But after a coulpe of rounds around the block, when you about just blow on the brake peddle, the car wants to thiw you thu the windshield.....

Maybe I should not have open the passages in the combo valve...... I reemed them from 1/8 to 3/16

also with the Mustang SVO MC 1 1/8 plunger, when compaired to the 7/8 Of the TC.. based on a 1.5 stroke.. the SVO moves 2.77 more fluid

Turbo-Coupe rearend swap

Reply #20 – July 21, 2010, 09:27:03 PM

Pics pics pics........

I was under my Sport today and saw the hard line to the rear on the pass side. The TC Diff has the junction on top of the diff. I wonder how hard it is to modify this?

Turbo-Coupe rearend swap

Reply #21 – July 22, 2010, 09:41:54 AM

I had that same issue... I extended the steel line and used the TC body bracket so I did not have to mod the flex line ir the rear end steel line

Turbo-Coupe rearend swap

Reply #22 – July 22, 2010, 11:32:09 AM

I believe the rear brake hard line on the 87-88 TC's and 87-93 5.0 Mustangs as well as the Mark VII's (not sure on the years) goes up the drive shaft tunnel and terminates just above the pumpkin on the rear end. It takes a banjo style soft line to go from where the hard line ends over to the rear end. My 83 Bird and the 93 Coupe (originally a 4 cylinder) both had soft lines on the right rear of the car. I kept it this way on the Coupe but I am going to switch to the center mounted line on the Bird as the 3" cat back is giving me issues with the right rear configuration. You can see what I am talking about here in the 4th and 10th pictures:

http://www.musclemustangfastfords.com/tech/mmfp_0903_fox_mustang_brake_upgrade/photo_10.html

Darren

Turbo-Coupe rearend swap

Reply #23 – July 27, 2010, 09:47:46 PM

Yes. I see. And where that breather cap is on the axle tube is where the 5.0L Thunderbird flex line bolts to the hard lines for the brake wheel cyl.

Now is there a way you can run the stock tbird line and still work the rear brakes properly if you swap to the turbo coupe diff? I really want to install this diff in my car. I know the stock 5.0L tbird and TC tbird hard lines to the rear are different sizes. I know an adapter could be used to make the stock 5.0L tbird rear line bolt to the tc brake hose, but that will go against the hydralic circuit. Small inlet to biger outlet would equil more pedal effort to apply rear brakes then? So use and adapter at the porportioning valve and run the proper sized brake line to the rear? I think I am getting confused now. Seems harder than I thought.

Turbo-Coupe rearend swap

Reply #24 – July 28, 2010, 10:43:12 AM

bending new steel line is not all that hard, if you still have acess to the TC, just go get the steel line from it and drop it in your thunderbird.

Turbo-Coupe rearend swap

Reply #25 – August 06, 2010, 09:27:21 PM

Mechanized......Any pics yet? How did the swap go?

Turbo-Coupe rearend swap

Reply #26 – August 13, 2010, 09:57:08 AM

I’m not going to highjack here cuz this is on topic. I just picked up a TC rear end for cheap. It was $250 cheaper than a guy here in town and has new brake hardware. What I didn’t notice till I got it home was that the more minor of the quad shock brackets were cut off on both sides. I did notice before the sale that the lines had been redone and weren’t in a position for the hose bracket by the caliper to bolt down. The main hose connection is on the pumpkin and not on the passenger’s axle like in the original post with pictures, too. I’m assuming that this axle may have had a pan hard bar or some other type of suspension improvement. Anyone have any thoughts on whether I should swap all the TC hardware to my drum axle or use this axle and take advantage of whatever suspension improvements this can take advantage of?

Turbo-Coupe rearend swap

Reply #27 – August 13, 2010, 10:48:59 AM

the brake spacing is off by about a 1/2 toward the center section if it is a 87/88 TC rear and you will have to space it towards the tube ends to get it to line up.

but if you do space it out, then your hard lines and vent should fall right in place to keep your flex line where it is now.

Turbo-Coupe rearend swap

Reply #28 – August 13, 2010, 11:50:46 AM

Quote from: BogusSVO;331712

the brake spacing is off by about a 1/2 toward the center section if it is a 87/88 TC rear and you will have to space it towards the tube ends to get it to line up.

but if you do space it out, then your hard lines and vent should fall right in place to keep your flex line where it is now.

Are you referring to the difference between Mustang GT and TC 8.8's or Cougar drum 8.8 vs. TC 8.8? The axle tube length is the same on all of them right?

BTW I edited my post to make it a little more clear. It sounded confusing when I re-read it.

Turbo-Coupe rearend swap

Reply #29 – August 13, 2010, 12:22:57 PM

This thread may be of some help:

http://www.foxtbirdcougarforums.com/showthread.php?t=13253

I know I am being Captain Obvious but its got some good data in it and I believe you will be able to see the housing length differences between your car and the year of the TC you got the rear from.

Darren