Rear Brake mod

[tr8]

Just saw this and wondered whether something like this would be possible on the 7s and 8s.

http://www.ebay.com/itm/MGB-GT-rear-dis ... 44&vxp=mtr

or

http://tinyurl.com/ps8altt

[darrellw]

I'm sure something similar could be engineers. Though I don't know why they didn't pick a caliper that already has a parking brake mechanism, rather than adding a second one.

Darrell Walker
66 TR4A IRS-SC CTC67956L
81 TR8 SATPZ458XBA406206
Vancouver, WA, USA

[Hasbeen]

I'm sure such a system could be used, but unless you are competing at a serious level, I can't see the point.

I got discs on the rear of the 8 as part of the Skyline diff modification. They were on the skyline diff standard, & I only had to overhaul the callipers, & fit new rotors.

The diff achieved its objective. That son of mine has not been able to break it, & the LSD has helped traction. I don't think the stock diff could have handled the current power, even with more sympathetic driving.

After fitting we then did some tests.

Yes it stops.
No it doesn't stop any harder.
It is just as hard to bleed & get a good pedal.
The self adjusting with discs is more reliable.
Pedal travel with single pot callipers is not affected.
The fronts still lock before the rears.
The rears will still lock if too much force is applied to the pedal.

So for normal, but hard road driving, about the only improvement in fitting discs is cosmetic.

Hasbeen

[john 215]

Hi,

Good thought out kit, but as already said, just go for a calliper with a parking brake ( E brake ) already there.

Agree with my learned friend Hasbeen, no massive advantage to be had, cant say mine stops any better, carried out mine more of a ' project ' than anything else. As with all cars braking is mostly done by the front and not the rear.


Cheers John


LIVE LIFE A QUARTER OF A MILE AT A TIME!

1976 Speke FHC BEAUTY FITTED WITH OVERDRIVE GEARBOX

1979 3.5 FHC CURRENTLY GARDEN ART !

1982 2.0 DHC NOW A 4.6, BUILT NOT BROUGHT !!!!

[Sautie]

[quote]<i>Originally posted by Hasbeen</i>

I'm sure such a system could be used, but unless you are competing at a serious level, I can't see the point.

I got discs on the rear of the 8 as part of the Skyline diff modification. They were on the skyline diff standard, & I only had to overhaul the callipers, & fit new rotors.

The diff achieved its objective. That son of mine has not been able to break it, & the LSD has helped traction. I don't think the stock diff could have handled the current power, even with more sympathetic driving.

After fitting we then did some tests.

Yes it stops.
No it doesn't stop any harder.
It is just as hard to bleed & get a good pedal.
The self adjusting with discs is more reliable.
Pedal travel with single pot callipers is not affected.
The fronts still lock before the rears.
The rears will still lock if too much force is applied to the pedal.

So for normal, but hard road driving, about the only improvement in fitting discs is cosmetic.

Hasbeen
[/quote

Can you give some details of your Skyline axle/diff project on your 8?
It sounds as if it was easily do able.

[Cobber]

The diff from the Aussie built R31 Skyline, was made by Borg Warner here in Oz, dunno if R31 Skylines in other parts of the world used the same diff

"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"

80'Triumph TR7, 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
'98 MG-F, 69'Ford F250.

[scotty]

The brackets in this kit may well fit the TR7 diff being a Salisbury type but the rotors they use definitely wouldn't as the TR7 & MGB PCD is different & from the photos, there isn't enough material to drill more holes closer to the hub. Very quickly, the job gets so much harder.

Scotty, South Australia.
1978 TR7 2.0 LT77
1981 XJS

[Hasbeen]

Yes Sautie, Nissan were forced to use a live axle on the Oz built Skyline, to meet local content rules. They used the same housing, with a lighter diff centre & axles in the locally built Pintara. It is the same diff as used in the Holden right up to the HSV Commodores before they went to the independent rear end.

You would have quite a few of these Holdens sold as some sort of Chevy over there. They were used in the Monaros & high performance stuff, so are over strength for our toys, but not too heavy.

Some Oz specialists use the Holden axle to make one for the 7 & 8, but they have a wider track, & have to be shortened. Still very doable, but at a little extra expense. The Skyline version was only about 1/16" longer than our Rover sourced diff, & only had to have a set of our mounting brackets welded on, & the stud holes relocated to take our wheels.

They are getting hard to find here now, as they suit many classics that now have too much power for their stock transmissions.

There are some photos of the diff instillation, & brakes in "my photos".

Hope this helps.

Hasbeen

[john 215]

Hi,
<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><font size="3"><font color="red">The brackets in this kit may well fit the TR7 diff being a Salisbury type but the rotors they use definitely wouldn't as the TR7 & MGB PCD is different & from the photos, there isn't enough material to drill more holes closer to the hub. Very quickly, the job gets so much harder.</font id="red"></font id="size3"><hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">


You do as I done and use Austin Maestro discs, have to turn the flanges of your half shafts though so they fit inside the discs. A bigger problem is in that configuration is the parking brake will be in the same place the shock absorber fits.

I like the disclaimer at the bottom and I quote -


<font size="3"><font color="green">Note: If you are not confident of your mechanical ability, or set fire to your house when changing the oil, do not bid as if installed improperly could cost you your life. </font id="green"></font id="size3">


Cheers John




LIVE LIFE A QUARTER OF A MILE AT A TIME!

1976 Speke FHC BEAUTY FITTED WITH OVERDRIVE GEARBOX

1979 3.5 FHC CURRENTLY GARDEN ART !

1982 2.0 DHC NOW A 4.6, BUILT NOT BROUGHT !!!!