Jump to content


Photo

MX83 Drift Caliper Bracket


  • Please log in to reply
37 replies to this topic

#21 tuner4life

tuner4life

    I♥1J

  • real members
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Interests:Vehicles!!!
  • Powered By:Caffeine, Dicks
  • Country:United States

Posted 28 March 2016 - 04:51 AM

I've had these brackets on for a while now and have been running some generic civic calipers I found at the junk yard. They didn't really fit well (caliper too far away and ~1/3 of pad surface overhangs outside of rotor diameter). Those junk yard calipers are starting to leak. One of the things I wanted to take care of for this season was to get the correct size calipers to properly fit on the rotors. Per Xcessive's website the desired caliper is a 1984-1987 Civic with a 1.5l.. There were several variations available. Working at a parts store I was able to just order in every available caliper for every 1984-1987 Civic listed. Just in case there were differences, I wanted to make sure that I could get the right one. I spent most of my saturday shift messing with them. Some wouldn't fit at all, but the ones that did fit and seemed like they would work had the same problem as the ones I had from the junk yard (caliper too far out and pads not fully on rotor).

 

So.. What exact vehicle am I supposed to be getting calipers from to fit these brackets properly? Or are they designed to hang 1/3 of the pad off the outside edge of the rotor?  May call Rich today to verify what I'm supposed to look for if nobody knows right off.


fe92ad35-3c34-44ba-a123-e3699aae7267_zps

 


#22 Demesio

Demesio

    I♥VTEC

  • real members
  • 1209 posts
  • Gender:Male
  • Location:CA
  • Country:China

Posted 29 March 2016 - 08:36 AM

 This sucked for me also because wasted money on the wrong calipers... here's what i ordered from rock auto...(that works)

xm%20caliper_zpsdx9lhgs0.jpg



#23 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6703 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 29 March 2016 - 09:59 AM

By "that works", do you mean 100% pad contact ?


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#24 WhoreMouth_Jr

WhoreMouth_Jr

    I ♥ 1.5J

  • real members
  • 2664 posts
  • Gender:Male
  • Location:Washington
  • Interests:Dudes, Dicks, Derivatives
  • Country:Canada

Posted 29 March 2016 - 10:22 AM

When in doubt just call Rich.  He's always super helpful.

 

I just peeked at their site and it looks like even in the picture they listed it looks like a good chunk of pad is off not engaging the rotor 


 

why do we spend our time and money on shitty cars that cant love us back?

 


#25 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6703 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 29 March 2016 - 10:57 AM

Figures........


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#26 Demesio

Demesio

    I♥VTEC

  • real members
  • 1209 posts
  • Gender:Male
  • Location:CA
  • Country:China

Posted 29 March 2016 - 10:59 AM

Yes, gordo. I'll take pictures to confirm it later. couldnt be more than .150" off

 

The problem with the honda crap, is that there are so many different calipers for that stupid honda civic, 3 different calipers (that i know up) with the same bolt location (that's where it fucks up)

 

I had taken the bracket to the junk yard with me and just found "said honda." I took the caliper off and it fit my bracket, so i figured im good to go.. that was a nope!

 

oh and if you get a 5/8" master... good fucking luck locking up your wheels..



#27 Okidriftjr

Okidriftjr

    Team Diplomats NO3

  • real members
  • 894 posts
  • Gender:Male
  • Location:Orrrreeegoon
  • Interests:Why the hell do you think I am here?
  • Powered By:1JZGTE
  • Country:Iraq

Posted 29 March 2016 - 11:56 AM

I have had this bracket set up on my car for over two years.
I first used a set of 85 base model Honda calipers with pads from a junk yard and the pads were so fucked it took extra pressure to engage which eventually blew out one of the calipers.
I then ordered a set of new 1986 Honda DX fronts and vatozone brand pads that function really well.
Yeah I have some pad that is not contacting the rotor, but still more surface area than z32 rear pads touch. They bite well with a 3/4 master.
Just my experience.

I keep comming back to toyotas. Guess it's where I belong!

You don't know what JDM is unless you lived there!

 

Car by panic

Parts by XM

Aero by Lucas

 

Single handedly keeping the UN alive.


#28 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6703 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 29 March 2016 - 02:01 PM

Pad area doesn't effect much except life.

And a larger pad actually will bite less than a smaller pad.

Actual braking torque is a result of pounds of force on the pad, and swept area.

 

So, are the honda caliper pistons larger than the Z32 pistons ?

The diameter is what determines force.


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#29 Okidriftjr

Okidriftjr

    Team Diplomats NO3

  • real members
  • 894 posts
  • Gender:Male
  • Location:Orrrreeegoon
  • Interests:Why the hell do you think I am here?
  • Powered By:1JZGTE
  • Country:Iraq

Posted 29 March 2016 - 04:54 PM

I am going to have to disagree with you Gordo. If that statement alone was true then changing out the pad material to a more aggressive compound wouldn't make a darn bit of difference.
To calculate how much friction is on two surface areas
you multiply surface area times pressure.

I keep comming back to toyotas. Guess it's where I belong!

You don't know what JDM is unless you lived there!

 

Car by panic

Parts by XM

Aero by Lucas

 

Single handedly keeping the UN alive.


#30 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6703 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 29 March 2016 - 04:59 PM

You should do a little more research on brake design, and the physics of friction........

Just saying.


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#31 Okidriftjr

Okidriftjr

    Team Diplomats NO3

  • real members
  • 894 posts
  • Gender:Male
  • Location:Orrrreeegoon
  • Interests:Why the hell do you think I am here?
  • Powered By:1JZGTE
  • Country:Iraq

Posted 29 March 2016 - 05:07 PM

Prove me wrong don't just pull the old blah blah blah.
Math doesn't lie.

I keep comming back to toyotas. Guess it's where I belong!

You don't know what JDM is unless you lived there!

 

Car by panic

Parts by XM

Aero by Lucas

 

Single handedly keeping the UN alive.


#32 NAC

NAC

    I♥1J

  • real members
  • 661 posts
  • Gender:Male
  • Location:Vancouver, BC
  • Country:Canada

Posted 29 March 2016 - 05:22 PM

Gordon's logic makes sense to me... calliper puts out x amount of force. If that goes into larger pad its more spread out and therefore less friction per cm^2, so in the end the total friction and braking is same overall...

Think about a three puck clutch... why the heck would those be a thing if your logic holds true.

ic0352250n00001.gif


#33 Okidriftjr

Okidriftjr

    Team Diplomats NO3

  • real members
  • 894 posts
  • Gender:Male
  • Location:Orrrreeegoon
  • Interests:Why the hell do you think I am here?
  • Powered By:1JZGTE
  • Country:Iraq

Posted 29 March 2016 - 05:37 PM

i can see the logic in your argument, however;
Large trucks, heavy equipment even massive ships (yes boats) use drum breaks because of the contact patch and surface area they provide and require less pressure to enact friction.
The main reason for changing this method in cars and trucks is the disipation of heat.
If you compare the type of material used in a three puck clutch to a full face, there are extreme differences in the make up. Less organic material to save on flywheel wear with a full face.
Three pucks are very abrasive and destroy metal quickly.
Basic Engineering classes when I was in college discussed frictional masses, surface contact patches, surface area etc.
these were very basic problems and equations they give students using variables in material, and environments.

I keep comming back to toyotas. Guess it's where I belong!

You don't know what JDM is unless you lived there!

 

Car by panic

Parts by XM

Aero by Lucas

 

Single handedly keeping the UN alive.


#34 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6703 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 29 March 2016 - 05:46 PM

 calliper puts out x amount of force. If that goes into larger pad its more spread out and therefore less friction per cm^2, so in the end the total friction and braking is same overall...

 

Bingo !

 

The only place this doesn't apply is on race tires, due to when they are up to temp, the surface isn't dry, but fluid,

so fluid adhesion comes into play.

I had to explain this to my tech school physics teacher many years ago, do to his claim that wide tires don't grip any better than narrow tires. But once he heard what makes wide tires work on a race car, he accepted it.

 

See, it isn't old age that makes me a sarcastic, pain in the ass, I've always been this way.........


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#35 tuner4life

tuner4life

    I♥1J

  • real members
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Interests:Vehicles!!!
  • Powered By:Caffeine, Dicks
  • Country:United States

Posted 30 March 2016 - 03:58 AM

 This sucked for me also because wasted money on the wrong calipers... here's what i ordered from rock auto...(that works)

xm%20caliper_zpsdx9lhgs0.jpg

 

 

 

 

 

 

These are the calipers that Rich recommended and I ordered on Monday. They should be to me by the end of the week. (Can't beat that price for fully loaded calipers!) Evidently these have the most percentage of pad on the rotor out of all the 80's civic options. The other issue that I was running into is the junk yard calipers I found also contact the stock wheels preventing me from using them as spares if need be. Hopefully I can gain a little extra wheel clearance with these

 

 

The science in this thread is good, I have always believed that when it comes to brakes, in general, bigger is always better. The science of why that isn't always true fascinated me though. If the caliper clamping pressure makes the same or better result than pad size, by the same logic wouldn't upgrading the bore size of the e-brake master cylinder have a vastly greater effect on the performance of the setup than any variation of Honda caliper or pad size?


fe92ad35-3c34-44ba-a123-e3699aae7267_zps

 


#36 DiscoShit

DiscoShit

    I♥2J

  • real members
  • 1186 posts
  • Gender:Male
  • Location:shaolin NY
  • Country:United States

Posted 30 March 2016 - 07:21 AM

Unless you blow out the caliper seal like oki did. Too much pressure from the bigger master might do that.

#37 Gordo

Gordo

    Resident Grumpy Old Man

  • real members
  • 6703 posts
  • Gender:Male
  • Location:The Republic of Texas
  • Interests:Your mother
  • Country:Texas

Posted 30 March 2016 - 07:45 AM

 Too much pressure from the smaller master might do that.

There, fixed.

Larger master would put out less pressure than a smaller one, with the same hand pressure.


Prefixes for 'Gordo'
 
口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   

 


#38 WhoreMouth_Jr

WhoreMouth_Jr

    I ♥ 1.5J

  • real members
  • 2664 posts
  • Gender:Male
  • Location:Washington
  • Interests:Dudes, Dicks, Derivatives
  • Country:Canada

Posted 30 March 2016 - 03:40 PM

And people say jzxp offers no insightful threads...

ha


 

why do we spend our time and money on shitty cars that cant love us back?

 





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users