Scion xA/xB Rear Disc Conversion
06-01-2004, 03:34 PM
#21
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Originally Posted by Slopoke21m
Well theyre officially done...and kids dont try this at home. Not a damn thing fit the way it was supposed to. All I had left to do was hook up the E-brake and put the dust shields on behind the rotors. Still working with all the parts off a 80somthing GT-S coupe the brake cables were a pain to get to work, but after fabbing a bracket and routing the cables they finally worked. And the dust shields that I thought would just bolt in placed, required some severe reworking. But alas....hopefully I can say the 1st xB in the US (if not the only) that has 4 wheel disk brakes with a working e-brake. Oh well even if not I like the look, but wouldnt do it again....so the wifeys xA is stuck with drums.... See Ya, Louie
06-01-2004, 03:36 PM
#23
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Originally Posted by Slopoke21m
They feel great, just like stock. The proportioning seems to be OK. I figured that maybe the ABS would compensate for any differences, it seems to be just fine. Stops pretty good. See Ya, Louie
02-13-2005, 04:49 PM
#24
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Re: For those that are willing to spend $988...
Originally Posted by YupYup
Click on the scroll down menu & check it out:
http://highonscion.com/chassisProducts.htm
Does anyone have this? If so, how about a review? Thx!
http://highonscion.com/chassisProducts.htm
Does anyone have this? If so, how about a review? Thx!
11-16-2005, 12:56 AM
#27
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I had thought of this a week or two ago, but not wanting to mess with a perportioning valve and such, I decided against even thinking it! Good job on it....But, I have to ask....What about the perportionong valve....AND the anti-lock brake system? I would be SCARED TO DEATH wondering if I didn't make myself a DEATHTRAP!
I am not flaming you by ANY means...but I gave up on the idea for my safety, not my inability. Could you fill us in on these things?
I am not flaming you by ANY means...but I gave up on the idea for my safety, not my inability. Could you fill us in on these things?
12-25-2005, 04:38 PM
#29
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Originally Posted by x_rayted711
I had thought of this a week or two ago, but not wanting to mess with a perportioning valve and such, I decided against even thinking it! Good job on it....But, I have to ask....What about the perportionong valve....AND the anti-lock brake system? I would be SCARED TO DEATH wondering if I didn't make myself a DEATHTRAP!
I am not flaming you by ANY means...but I gave up on the idea for my safety, not my inability. Could you fill us in on these things?
I am not flaming you by ANY means...but I gave up on the idea for my safety, not my inability. Could you fill us in on these things?
12-26-2005, 11:05 PM
#31
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it wouldnt mess with stability or trac. could mess with abs tho.
the abs unit would be working out of it's normal operating range. but if u were to use a proportioning valve it should be fine.
the abs unit would be working out of it's normal operating range. but if u were to use a proportioning valve it should be fine.
12-26-2005, 11:30 PM
#32
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Just a thought, but when I was into drag racing, the choice, if possible, was drum brakes because the disk brakes are always in contact with the rotor where as the drum brakes were not touching the drum. Is this true? By retrofitting rear disks, are we adding (although slight) more drag to the car?
12-27-2005, 02:21 PM
#33
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Originally Posted by x_rayted711
Just a thought, but when I was into drag racing, the choice, if possible, was drum brakes because the disk brakes are always in contact with the rotor where as the drum brakes were not touching the drum. Is this true? By retrofitting rear disks, are we adding (although slight) more drag to the car?
12-27-2005, 07:21 PM
#34
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drums provide better static grip at the line in drags (in case you wanted to hold the brake pedal and spool a turbo or leave at a certain rpm) Drums also usually use a residual valve that holds a little pressure in the lines to overcome the return springs (helps them react faster, similar to the discs). If a car has this valve and you convert to disc, it will hold the pads against the rotor slightly. Not sure if the scions use them or not, though.
discs usually slip under the drag racing conditions listed above, but are better for high-temp (speed+duration) stopping, like a road course (or NJ highways...)
discs usually slip under the drag racing conditions listed above, but are better for high-temp (speed+duration) stopping, like a road course (or NJ highways...)
01-26-2006, 01:18 PM
#35
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You definitely get an "A" for effort... but I would say this modification is mainly looks... I know Disc brakes are better stopping power under certain conditions, etc. But most of your stopping power is in your front brakes obviously, the rears work for balance.
And whoever said that the brake pads are touching slightly at all times needs to NOT believe everything s/he hears
And whoever said that the brake pads are touching slightly at all times needs to NOT believe everything s/he hears
01-26-2006, 03:30 PM
#36
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^^^ I am the one who said the pads are 'always' making contact with the rotor. This was embedded into my brain from my drag racing buddies...and you know what? I just did a quick search and found that they DO always touch.
So, maybe I can believe some of what I hear? Unless someone explains to me otherwise, I'll have to stand my ground on this one. Check it out for yourself! There is no mechanical device built into a brake system that pushes the pad away from the rotor after you take your foot off the pedal. I read numerous forums and they ALL say the same thing...the pads DO stay in contact with the rotor.
As far as any major 'drag' from this, well, that has been answered in this thread as well. It isn't enough to worry about.
So, maybe I can believe some of what I hear? Unless someone explains to me otherwise, I'll have to stand my ground on this one. Check it out for yourself! There is no mechanical device built into a brake system that pushes the pad away from the rotor after you take your foot off the pedal. I read numerous forums and they ALL say the same thing...the pads DO stay in contact with the rotor.
As far as any major 'drag' from this, well, that has been answered in this thread as well. It isn't enough to worry about.
01-26-2006, 08:11 PM
#37
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they shouldnt, think about it... if theyre always in contact, then theyll wear out super quickly... anyway... try slipping a piece of paper between your pads and rotors (when theyre cooled of course) see what happens
01-26-2006, 09:08 PM
#38
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Drums have springs that pull them back away from the drum slightly. It was never said that there was 'major' pressure on them, just a little parasitic drag from them rubbing on the rotors. Like I said...Do a google search for it...you'll find it's more common than you think.
03-19-2006, 07:06 PM
#39
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yes i will stay with x_rayted on this one as well,,, I guess u have never changed a set of pads on disc brakes? why else would u have to push the piston back in the caliper for the pads to fit back on the rotor? It is true...
