Are these different from the base CRX/Civic Calipers, but also different from the Civic EX/Integra?

I saw a picture of what was said to be a '91 CRX SI front brake caliper, and it was the Integra/Civic EX style. You know, the style where the caliper bracket bridges across the front of the caliper. The non-EX Civic is not like this. The front of the caliper bracket is 'open' if you will.

Now what's the deal? Are the '90/91 CRX SI front brake calipers REALLY Integra/EX style?

It appears that the '90/'91 CRX Si brake calipers are different part #'s from the EX caliper, and also different part #'s from the base Civic. What's the deal here?

What size rotors did the '90/'91 CRX Si use up front?

And lastly, does anybody have a picture of a '90/'91 CRX Si front caliper? I'd like to see if it matches the picture I'm looking at.

 

90-91 CRX si used a different style caliper than all other years of civics. it was the same as some year prelude S (88-90). the rotor was the same. it was just a different caliper. the knuckles were the same, you can interchange the calipers if you want.

i have no real idea why. i cant say its any better. if i had my choice, id use 88-89 calipers because its going to be easier to find brake pads for that caliper because its used in later civics as well.

but its really no big deal.

 

Does the caliper bracket/mount resemble that of the Civic EX/Integra?

Or does it look like the base Civic/CRX?

And lastly, does the '90/'91 CRX Si use a larger piston than that of the other non-EX Civic?

 

piston size is the same.

theres really no reason for the change. no advantage.

 

Gotcha.

But what do the brakes look like? Does it use the reinforced style caliper bracket (Civic EX, Integra, etc), or the open-face caliper bracket?

 

sigh. maybe ill take a pic tonite.

im not quite sure what youre talking about. they look pretty similar to 88 brakes.

really, its no big deal.

 

Does it look like that?

 

thast how my 91 crx si calipers look.

 

88 caliper




90 caliper




sorry for the fuzzy pics.

 

Excellent, thanks a ton for the pictures.

Is the pad surface area any larger at ALL on the 90+ caliper? Even if by a small portion?

And what size are the stock Si wheels....14"?

 

14" wheel.

seriously. stop. theres no benefit.

im done with this thread.
watching 24 now....

 

I'm not asking because I think it'll improve my braking performance.

I just want to confirm some information.

I realize it won't improve braking and that there's no benefit; but that's not what I'm asking.

 

I remember seeing the 90-91 crx si calipers on a friends car and i thought he swapped front calipers. He swore up and down he didnt but i have never seen stock calipers look so similar to the DA or EX ones (because of the bracket and how it bridges over the front). Thanks for making a post about it jonathan, i always had this question in the back of my head.

 

Just adding that they do in fact use different pads. The price difference is only a few dollars, unlike the $20 mark-up on 92+ EX pads (over the integra ones ).

 

After investigating at work today, I'd like to say a few things:

The DX uses a 2" piston.

The Si a 2 1/8" piston.

The EX/Integra/ITR uses a 2 1/4" piston.

Just a little FYI.

If the pad surface area is also larger, can it not be argued that the Si calipers pose a benefit (even if marginal) over the DX calipers?

 

hey, so i gotta make a correction. i was wrong.

the 90/91 caliper piston IS slightly bigger. perhaps just the 1/8. but not much. and supposedly the construction is a bit beefier. but, its not that big of a difference. just something to consider if handpicking your complete brake setup from scratch.

i apologize for the misleading info.

 

Good info I never really compared but I also thought the 90/91 Si had bigger calipers.

 

Ive heard the 90-91 Civic 4 door EX has the same size brakes as the Da integ, but without the toe issue of a DA.

 

the bigger calipers are probably to match the rear disc brakes, so that they would be proportioned right, and not have to remake a prop. valve. but, arent those cheaper to revalve than new calipers to design? i don't know, i'm just bullshitting around here.

 

A while back when I had to replace my front caliper b/c the original one had seized, Advanced Autoparts kept giving me the wrong caliper. It was narrower for some reason...finally got the correct one. This is on a 1991 CRX Si.

 

sorry to bring from the past...

I believe the EF series uses the same small caliper as the EG and EK models DX with the 9.5" rotor, the caliper mount does not have a front hangar. The one on the 9.5" rotor with no front hanger, at least on a 96-00 should have a number 2056 on i think the caliper mount bracket on the thin side where it mounts to the knuckle. The 10.4" brakes, with the caliper hanger, that pic of the "90" caliper, is not the same as on EK civic's 10.4" brake setups. maybe its a smaller rotor, but the number on EK civic's 10.4" brakes is 5410 on the caliper bracket mount.

It seems the 91 CRX does have a different sized brake setup than EK EX models.

Correct me if I'm wrong. I can only verify my knowledge of 96-00 civics, thats what I have and i got a helms for that. Check the numbers on your brackets, could be the same brakes. Could be the Si just does for some reason take a diff. caliper.

According to info on shared pads from buybrakes.com, the 90 Civic EX with the brakes everyone wants, takes the same pad as a DA (90-93 Teg), and I do have DA calipers in my garage, and can tell you that they do NOT look like the Si caliper pics you have here, or anything on em, but the bracket may be similar enough to take the same pad.
Just adding info, maybe someone can use it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jonathan_ED3 &raquo;</TD></TR><TR><TD CLASS="quote">
The EX/Integra/ITR uses a 2 1/4" piston.</TD></TR></TABLE>

You sure on that? I kind of find it hard to believe that the ITR has same size as EX. Not saying you are wrong just asking.

 

He is incorrect. The EX/Si uses the 10.4" rotor and uses i guess the 2 1/8" piston, tho that seems big. The Integra, 90-93 and 94-01 and ITR/Legend/Lude VTEC take a 57mm piston, which is 2 1/4".

To restate, the EX, like EG and EK EX models with ABS, the EK Si, and i dont know about the EF EX model, have a smaller piston. The 57mm piston on Intregras and ITRs is just for them, not on any civic.