Early 90 brakes
- Thread starter Davemack
- Start date
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flat
Well-Known Member
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- 9,075
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- Far away from you!!
as in the chassis rail in the engine bay or at the rear of the car?
what are you on front disc and rear drums?
what are you on front disc and rear drums?
zeaphod
Well-Known Member
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- 3,107
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- Belfast, Norn Iron
Pre 1990-ish it should be drums on the back, with a splitter in the engine bay. This just splits the front IIRC. There are separate lines from the master for the front and back. There is another splitter on the rear axle.
Sorry for vague post.
It's a 1986 v8 90.
All original it has a g-valve I think on chassis rail. Drums on back solid early discs on front.
I've changed servo, brake pads and shoes master cylinder and rear wheel cylinders.
Drove it and readjusted rear brakes.
It's just horrible to try and stop I'm using all my strength on brake pedal.
Ive had other early 90's never like this.
I used branded pads and shoes.
It's got new rear drums as well.
I bled them multiple times getting ****ed off with it now.
It's a 1986 v8 90.
All original it has a g-valve I think on chassis rail. Drums on back solid early discs on front.
I've changed servo, brake pads and shoes master cylinder and rear wheel cylinders.
Drove it and readjusted rear brakes.
It's just horrible to try and stop I'm using all my strength on brake pedal.
Ive had other early 90's never like this.
I used branded pads and shoes.
It's got new rear drums as well.
I bled them multiple times getting ****ed off with it now.
tottot
Well-Known Member
- Posts
- 8,007
- Location
- west wales coast
Is it an original V8 or engine replacement ? Remember most of the braking is done by the front wheels, are all calliper pistons free and working? Is there vacuum for the servo ?
flat
Well-Known Member
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- 9,075
- Location
- Far away from you!!
One way valve to the servo so the vacuum can’t go back towards the engine.
Is the MC push rod adjusted right? There is a specific clearance. I can’t remember if but it’s in the workshop manual
The g valve is unlikely to go
Wrong, it’s literally a ball that rolls forward under hard braking and shuts off the rear circuit so you don’t spin by locking up the rears.
If pedal is hard there is either a vacuum problem or a calliper problem imo
Have you got some one to push the brake pedal while you look carefully at each calliper to watch what it does?
Is the MC push rod adjusted right? There is a specific clearance. I can’t remember if but it’s in the workshop manual
The g valve is unlikely to go
Wrong, it’s literally a ball that rolls forward under hard braking and shuts off the rear circuit so you don’t spin by locking up the rears.
If pedal is hard there is either a vacuum problem or a calliper problem imo
Have you got some one to push the brake pedal while you look carefully at each calliper to watch what it does?
Rougharse Racing
Well-Known Member
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- 883
- Location
- The Grim North
As flat said, do not remove any limiting valve for the rear brakes, if the back end locks up before the front, the rear end WILL try and overtake the front under heavy braking.
I'll get wheels off and check calipers, pedals hard.
I've got a valve I can fit.
The engines running well so I doubt I've got vacuum leak.
This had been a problem since I rebuilt landy.
I'm tempted to replace discs and calipers for later vented 110 ones.
It spoils the truck.
I've got a valve I can fit.
The engines running well so I doubt I've got vacuum leak.
This had been a problem since I rebuilt landy.
I'm tempted to replace discs and calipers for later vented 110 ones.
It spoils the truck.
