90-91 EX front brakes 10.3" under an HX wheel write-up
09-26-2004, 01:49 PM
#1
Honda-Tech Member
Thread Starter
Join Date: Jul 2001
Location: Land of the free, whoever told you that is your enemy
Posts: 6,776
Likes: 0
Received 2 Likes
on
2 Posts
90-91 EX front brakes 10.3" under an HX wheel write-up
Ok guys, I put EX front brakes on my beater yesterday, and took lots of pictures to show how to do it and what not.
Step one: Break loose lug nuts and axel nuts then jack up car. Your inadequate brakes should look like below, well mabey your rotors aren't that shot.
Make sure you put jackstands under your car also, I didn't but I'm a moron.
Step two: Remove the wheels and then remove nuts on the upper and lower ball joints, and remove the tie rod nut. Next break the balljoints loose, I use a pry bar and smack the side of the spindle or control arm depending on which joint it is with a BFH, while applying pressure to the joint with the pry bar. Also remove the brakeline.
Step three: Prep the new brakes. You need to grind both the caliper and the caliper bracket. Pics show how much to grind below. I used a bench grinder and die grinder in combination to achive a good fit. After the grinding is done install the new rotors and pads, if you don't know hot to do this, then you shouldn't be doing a brake upgrade, and then test fit the wheel.
Before:
After:
Test fit before mounting to car:
Step four: Install the new spindle and brakes, in the reverse order of removal. Bleed the brakes and enjoy your new stopping power. I had to zip tie the brakelines to the spindle because the line isn't long enough, I will be installing new goodridge lines for the EX soon.
Option: you may want to upgrade your 7/8" Master cylinder to a 15/16" unit from an 89 Prelude Si, or from a 90-93 teg but if using the teg unit you will have to upgrade the boster also. The pedal feel is kinda spongey with the 7/8" unit. I'm gonna upgrade mine once I put rear disc on.
Hope this helps you guys out.
Step one: Break loose lug nuts and axel nuts then jack up car. Your inadequate brakes should look like below, well mabey your rotors aren't that shot.
Make sure you put jackstands under your car also, I didn't but I'm a moron. Step two: Remove the wheels and then remove nuts on the upper and lower ball joints, and remove the tie rod nut. Next break the balljoints loose, I use a pry bar and smack the side of the spindle or control arm depending on which joint it is with a BFH, while applying pressure to the joint with the pry bar. Also remove the brakeline.
Step three: Prep the new brakes. You need to grind both the caliper and the caliper bracket. Pics show how much to grind below. I used a bench grinder and die grinder in combination to achive a good fit. After the grinding is done install the new rotors and pads, if you don't know hot to do this, then you shouldn't be doing a brake upgrade, and then test fit the wheel.
Before:
After:
Test fit before mounting to car:
Step four: Install the new spindle and brakes, in the reverse order of removal. Bleed the brakes and enjoy your new stopping power. I had to zip tie the brakelines to the spindle because the line isn't long enough, I will be installing new goodridge lines for the EX soon.
Option: you may want to upgrade your 7/8" Master cylinder to a 15/16" unit from an 89 Prelude Si, or from a 90-93 teg but if using the teg unit you will have to upgrade the boster also. The pedal feel is kinda spongey with the 7/8" unit. I'm gonna upgrade mine once I put rear disc on.
Hope this helps you guys out.
09-26-2004, 02:01 PM
#2
Honda-Tech Member
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (CRXBart)
Nice writeup dude...how much grinding did you have to do and did you use the 90-91 ex knuckles or the DA knuckles? Any camber issues?
09-26-2004, 02:12 PM
#3
Honda-Tech Member
Thread Starter
Join Date: Jul 2001
Location: Land of the free, whoever told you that is your enemy
Posts: 6,776
Likes: 0
Received 2 Likes
on
2 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (crexer)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crexer »</TD></TR><TR><TD CLASS="quote">Nice writeup dude...how much grinding did you have to do and did you use the 90-91 ex knuckles or the DA knuckles? Any camber issues?</TD></TR></TABLE>
I used the EX knuckles, DA knucks will work but it will throw the camber off, If you don't have a camber kit, and lower your car substantually it will fix your neg. camber. Since I used EX knuckes no camber issues were there. I ground down about 1/4" now it fits like stock.
I used the EX knuckles, DA knucks will work but it will throw the camber off, If you don't have a camber kit, and lower your car substantually it will fix your neg. camber. Since I used EX knuckes no camber issues were there. I ground down about 1/4" now it fits like stock.
09-26-2004, 02:34 PM
#4
Junior Member
Join Date: Nov 2001
Location: Asheboro, NC, 27203
Posts: 614
Likes: 0
Received 0 Likes
on
0 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (CRXBart)
Good stuff, I did the same thing to get the 10.3 EX's under my 88 Si wheels. Didn't have to grind quite that much though. And FWIW, the 90-91 EX master cylinder is 15/16" and a direct bolt on fit. No line bendo.
chris
chris
09-26-2004, 03:13 PM
#5
Honda-Tech Member
Thread Starter
Join Date: Jul 2001
Location: Land of the free, whoever told you that is your enemy
Posts: 6,776
Likes: 0
Received 2 Likes
on
2 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (NCchris)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NCchris »</TD></TR><TR><TD CLASS="quote">And FWIW, the 90-91 EX master cylinder is 15/16" and a direct bolt on fit. No line bendo.
chris</TD></TR></TABLE>
I forgot about that 90-91 EX MC=89 Prelude Si MC
chris</TD></TR></TABLE>
I forgot about that 90-91 EX MC=89 Prelude Si MC
09-26-2004, 03:43 PM
#6
Join Date: Jul 2002
Posts: 1,678
Likes: 0
Received 0 Likes
on
0 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (CRXBart)
I have so called EX knucklesthat I was at several points going to sell, put on my car, etc. Father picked them up from a junk yard.
Went to test fit them not to long ago and they would not fit under my HX's. The bolt patterns did not match. Biggest waste of money.
Those look good though.
Went to test fit them not to long ago and they would not fit under my HX's. The bolt patterns did not match. Biggest waste of money.
Those look good though.
09-26-2004, 03:52 PM
#7
Senior Member
Join Date: Jul 2003
Location: Yankee in Wilmington, NC
Posts: 7,776
Likes: 0
Received 0 Likes
on
0 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (ijjz)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ijjz »</TD></TR><TR><TD CLASS="quote">I have so called EX knucklesthat I was at several points going to sell, put on my car, etc. Father picked them up from a junk yard.
Went to test fit them not to long ago and they would not fit under my HX's. The bolt patterns did not match. Biggest waste of money.
Those look good though. </TD></TR></TABLE>
what?!?!
he probably got accord EX...
Went to test fit them not to long ago and they would not fit under my HX's. The bolt patterns did not match. Biggest waste of money.
Those look good though.
</TD></TR></TABLE>what?!?!
he probably got accord EX...
Trending Topics
09-26-2004, 04:02 PM
#8
Honda-Tech Member
Join Date: Feb 2002
Location: Tampa, FL, USA
Posts: 1,213
Likes: 0
Received 0 Likes
on
0 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (crxgator)
instead of grinding you could also go to the parts store and pick up a pack of wheel washers for $1.99 worked perfect on my EX brake upgrade
also i believe the EX 15/16 master will not bolt to stock booster the bolt pattern is reverse
however I am using the prelude si 15/16 and just had to bend the front line up a lil and it bolts directly to my stock crx booster
also i believe the EX 15/16 master will not bolt to stock booster the bolt pattern is reverse
however I am using the prelude si 15/16 and just had to bend the front line up a lil and it bolts directly to my stock crx booster
09-26-2004, 04:02 PM
#9
Honda-Tech Member
Join Date: Sep 2001
Location: The burbs of illadelph, USA
Posts: 6,045
Likes: 0
Received 1 Like
on
1 Post
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (crxgator)
Do you have to swap the whole caliper assembly as well, or just the knuckles and rotors??
09-26-2004, 04:16 PM
#10
Honda-Tech Member
Thread Starter
Join Date: Jul 2001
Location: Land of the free, whoever told you that is your enemy
Posts: 6,776
Likes: 0
Received 2 Likes
on
2 Posts
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (Chronicsinners)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chronicsinners »</TD></TR><TR><TD CLASS="quote">Do you have to swap the whole caliper assembly as well, or just the knuckles and rotors??</TD></TR></TABLE>
Yes everything is different, the calipers are bigger, hence the need for more fluid displacement.
Yes everything is different, the calipers are bigger, hence the need for more fluid displacement.
09-26-2004, 04:56 PM
#11
Honda-Tech Member
Re: 90-91 EX front brakes 10.3" under an HX wheel write-up (NCchris)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NCchris »</TD></TR><TR><TD CLASS="quote">And FWIW, the 90-91 EX master cylinder is 15/16" and a direct bolt on fit. No line bendo.
chris</TD></TR></TABLE>
prelude is cheaper though.
and bending the line isn't difficult or drastic. but, true, the 90-91 civic ex is a direct bolt in
chris</TD></TR></TABLE>
prelude is cheaper though.
and bending the line isn't difficult or drastic. but, true, the 90-91 civic ex is a direct bolt in
09-28-2004, 04:41 AM
#14
Join Date: Feb 2004
Location: Somewhere, Ontario, Canada
Posts: 3,411
Likes: 0
Received 1 Like
on
1 Post
Re: (RACINTWEEK)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RACINTWEEK »</TD></TR><TR><TD CLASS="quote">arent rex si rotors 10.3"</TD></TR></TABLE>
nope 9.5".
nope 9.5".
09-28-2004, 08:34 AM
#16
Honda-Tech Member
Thread Starter
Join Date: Jul 2001
Location: Land of the free, whoever told you that is your enemy
Posts: 6,776
Likes: 0
Received 2 Likes
on
2 Posts
Re: (DpSyChO)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DpSyChO »</TD></TR><TR><TD CLASS="quote">Prelude MC also = 88-89 Accord lxi</TD></TR></TABLE>
Thanks for the update nOOb.
Thanks for the update nOOb.
09-28-2004, 10:33 AM
#17
Honda-Tech Member
Join Date: Jun 2003
Location: WilkesBarre, Pa, USA
Posts: 130
Likes: 0
Received 0 Likes
on
0 Posts
Re: (CRXBart)
which master cylinder is the 13/16th from? thats what i have on my 90 civic si. is that the correct one because my pedal is spongy and i bled the brakes about 75 times, and everything in my braking system is replaced except for the prop valve, is there a write up on which MC, boosters, prop valves, and brake setups came on which cars?
.JPG)
09-28-2004, 06:46 PM
#20
Honda-Tech Member
Thread Starter
Join Date: Jul 2001
Location: Land of the free, whoever told you that is your enemy
Posts: 6,776
Likes: 0
Received 2 Likes
on
2 Posts
Re: (red civic standard)
Go put your hubcaps back on. 
I didn't know you had 10.3s, guess I should have known.
Modified by CRXBart at 8:41 AM 12/26/2004
I didn't know you had 10.3s, guess I should have known. Modified by CRXBart at 8:41 AM 12/26/2004
Thread
Thread Starter
Forum
Replies
Last Post
davey5300
Honda Accord (1990 - 2002)
11
04-22-2020 06:54 AM
flatblk
Honda CRX / EF Civic (1988 - 1991)
5
03-23-2005 08:45 PM
jagged4698
Honda Accord (1990 - 2002)
4
11-18-2004 07:04 PM
