Drum brakes to Disc

iraghava · 23rd June 2007, 15:20

Quote:

Originally Posted by BUSA

Its acceptable but not the best, the inner wheels foul with the body on full lock and hence i shifted to 50 profiles.

Fair enough, had not taken that factor into account. I was just looking at the OD variation.

sajivr · 7th October 2007, 10:07

Quote:

Originally Posted by BUSA

Its acceptable but not the best, the inner wheels foul with the body on full lock and hence i shifted to 50 profiles.

How about 215/55 ?
stock optra magnum comes with 195/60 R15 that translates to sidewall height of 195 * .60 = 117

with 215/55, it becomes 118.25, pretty close to stock setup.

But is it OK to put 215 tyres on 15" wheels?

greatmana2000 · 8th October 2007, 10:30

When braking in a straight line , if the car goes to one side , it might be due to

1> improper tyre alignment , tyre inflation not proper , wheel balancing not done ,wheel bearings might be faulty ,tyre might be faulty .

2> when braking either of the rotors might get locked , either of the drums might get locked , brake pads might be worn out .

Incase after having carried out all the above necessary inspections ,if you still feel the brakes are not upto the mark , you can get the drums scored for more roughness ,that might help ,otherwise try to find if you can match the skoda read drumset (includes the carrier plate ) as well . I think the Skoda has a bigger drum size than the optra .

greatmana2000 · 8th October 2007, 10:35

I personally feel that the drums offer much better retardation than a disk , as disk pads get hot easily thereby the disks lose their effectiveness . I always found that disks are good for average speeds like 50-80 and drums are much better for speeds over 80 .

A good example would be the Yamaha gladiator which has a bigger front drum rather than a disk , as found in other bikes of similar capacity . Disks have a tendency to lock up which dosent make sense while riding on the streets .

greatmana2000 · 8th October 2007, 10:38

Quote:

Originally Posted by gdhiraj

Today i applied breaks at about 80K/h and vola ... i felt vibration for a second in the steering wheel then it was gone .. again accelerated applied brakes and felt the vibro again for a second ... gosh .. dont know if its due to worn out brake pads or somethings else is gone wrong with the car ?

This might be due to suspension probs as well . Get the suspension checked

nitrous · 8th October 2007, 13:24

Quote:

Originally Posted by greatmana

I personally feel that the drums offer much better retardation than a disk , as disk pads get hot easily thereby the disks lose their effectiveness . I always found that disks are good for average speeds like 50-80 and drums are much better for speeds over 80 .

No offence,man. But,

greatmana2000 · 16th October 2007, 17:34

Nitrous ..sorry ,but do you know anyone ,place ,site which suggests that discs do not get hotter than a drum ?

nitrous · 16th October 2007, 22:04

It isn't about the heat,man.
I was referring to ur post that says drums are more efficient than discs.

BUSA · 16th October 2007, 22:56

I heard the Veyron has Drums all around since its mostly above 80kmph

Jokes aside greatman - Discs are better then Drums in all ways and about heat, the discs are ventialated for better cooling.

need_for_speed · 9th July 2009, 16:45

Hey,

I Got Maruti Zen 1995 MH410, i need to change my rear drums to disc as i am getting a G13B with high compression pistons installed in it. Therefore please enlighten me on how to go about it and what to do about the hand brake?

sushrutha · 9th July 2009, 16:55

@NFS.. Conversion of rear drum brake to disc brake for Zen will involve lots of modifications & has be done by a professional. Instead I would suggest you to get Esteem brake booster assembly, this is almost sufficient for Pocket rocket
Other option is get better tyres + good brake pads( ceramic ones .. they are quite expensive though)

sgiitk · 9th July 2009, 17:02

I fully agree. You will not only need to discs, callipers etc, but also to rebalance the proportioning valve etc. I would be wary of any meddling with the most vital safety equipment. If you at all go for it then make sure the chap doing the job really knows his stuff.

need_for_speed · 9th July 2009, 19:43

Quote:

Originally Posted by sushrutha

@NFS.. Conversion of rear drum brake to disc brake for Zen will involve lots of modifications & has be done by a professional. Instead I would suggest you to get Esteem brake booster assembly, this is almost sufficient for Pocket rocket
Other option is get better tyres + good brake pads( ceramic ones .. they are quite expensive though)

I have got 155/65/13 michellin XM1. The Brakes are not sufficient for my present engine, though i have ceramic pads, and another point is that i have got a few modifications to the engine and might be getting a turbo or a supercharger, therefore my power should be around 125BHP to 150BHP for which i do need some nice brakes. I have modified the existing discs to Esteem Type 2 Discs, because of which i am finding the break sufficient enough for my present engine.

Sivam · 17th July 2009, 15:16

Off the top of my head, any change in the brake setup will also need a change to the proportioning valve. Its there to maintain a set ratio between front and back braking effort. This in turn ensures that the rears do not lock before the front wheels do. You should be able to get an adjustable proportioning valve for about $40-50 from places like summitracing.com Wilwood is a good name is you are looking for proportioning valves.

recshenoy · 29th April 2010, 13:48

Guys,

Sorry to re-open the old post. Could not find and appropriate thread! Any pointer for after market ABS/disc brake in Bangalore?

One of my friends wants to upgrade his rear brakes to disc and if possible add ABS! I know its pretty expensive affair with risk of unreliability!

8th October 2007, 10:30	#33
greatmana2000 BANNED Join Date: Apr 2006 Location: chennai Posts: 703 Thanked: 58 Times	When braking in a straight line , if the car goes to one side , it might be due to 1> improper tyre alignment , tyre inflation not proper , wheel balancing not done ,wheel bearings might be faulty ,tyre might be faulty . 2> when braking either of the rotors might get locked , either of the drums might get locked , brake pads might be worn out . Incase after having carried out all the above necessary inspections ,if you still feel the brakes are not upto the mark , you can get the drums scored for more roughness ,that might help ,otherwise try to find if you can match the skoda read drumset (includes the carrier plate ) as well . I think the Skoda has a bigger drum size than the optra .
	() Thanks

8th October 2007, 10:35	#34
greatmana2000 BANNED Join Date: Apr 2006 Location: chennai Posts: 703 Thanked: 58 Times	I personally feel that the drums offer much better retardation than a disk , as disk pads get hot easily thereby the disks lose their effectiveness . I always found that disks are good for average speeds like 50-80 and drums are much better for speeds over 80 . A good example would be the Yamaha gladiator which has a bigger front drum rather than a disk , as found in other bikes of similar capacity . Disks have a tendency to lock up which dosent make sense while riding on the streets .
	() Thanks

16th October 2007, 17:34	#37
greatmana2000 BANNED Join Date: Apr 2006 Location: chennai Posts: 703 Thanked: 58 Times	Nitrous ..sorry ,but do you know anyone ,place ,site which suggests that discs do not get hotter than a drum ?
	() Thanks

16th October 2007, 22:04	#38
nitrous Senior - BHPian Join Date: May 2004 Location: UAE/Lon/Madras Posts: 6,965 Thanked: 325 Times View My Garage	It isn't about the heat,man. I was referring to ur post that says drums are more efficient than discs.
	() Thanks

16th October 2007, 22:56	#39
BUSA Senior - BHPian Join Date: Aug 2005 Location: Bombay Posts: 5,130 Thanked: 20 Times View My Garage	I heard the Veyron has Drums all around since its mostly above 80kmph Jokes aside greatman - Discs are better then Drums in all ways and about heat, the discs are ventialated for better cooling.
	() Thanks

9th July 2009, 16:45	#40
need_for_speed BHPian Join Date: Sep 2008 Location: Chennai Posts: 65 Thanked: 0 Times View My Garage	Changing from Drum Brakes to Disc Brakes Hey, I Got Maruti Zen 1995 MH410, i need to change my rear drums to disc as i am getting a G13B with high compression pistons installed in it. Therefore please enlighten me on how to go about it and what to do about the hand brake?
	() Thanks

9th July 2009, 16:55	#41
sushrutha Senior - BHPian Join Date: Mar 2006 Location: Chikmagalur/Ban Posts: 1,703 Thanked: 333 Times View My Garage	@NFS.. Conversion of rear drum brake to disc brake for Zen will involve lots of modifications & has be done by a professional. Instead I would suggest you to get Esteem brake booster assembly, this is almost sufficient for Pocket rocket Other option is get better tyres + good brake pads( ceramic ones .. they are quite expensive though) Last edited by sushrutha : 9th July 2009 at 17:00.
	() Thanks

9th July 2009, 17:02	#42
sgiitk BANNED Join Date: Dec 2007 Location: Gurugram Posts: 7,969 Thanked: 4,787 Times	I fully agree. You will not only need to discs, callipers etc, but also to rebalance the proportioning valve etc. I would be wary of any meddling with the most vital safety equipment. If you at all go for it then make sure the chap doing the job really knows his stuff.
	() Thanks

17th July 2009, 15:16	#44
Sivam Newbie Join Date: Mar 2007 Location: Chennai Posts: 11 Thanked: Once	Proportioning valve changes Off the top of my head, any change in the brake setup will also need a change to the proportioning valve. Its there to maintain a set ratio between front and back braking effort. This in turn ensures that the rears do not lock before the front wheels do. You should be able to get an adjustable proportioning valve for about $40-50 from places like summitracing.com Wilwood is a good name is you are looking for proportioning valves.
	() Thanks

29th April 2010, 13:48	#45
recshenoy Senior - BHPian Join Date: Mar 2008 Location: Mangalore / Bangalore Posts: 1,128 Thanked: 254 Times	Guys, Sorry to re-open the old post. Could not find and appropriate thread! Any pointer for after market ABS/disc brake in Bangalore? One of my friends wants to upgrade his rear brakes to disc and if possible add ABS! I know its pretty expensive affair with risk of unreliability!
	() Thanks